Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics

Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD,...
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Gespeichert in:

Autor*in:	Tao, Ling [verfasserIn] Li, Gui-Sheng [verfasserIn] Yin, Shuang-Feng [verfasserIn] Ou-Yang, Qiang [verfasserIn] Luo, Sheng-Lian [verfasserIn] Zhou, Xiao-Ping [verfasserIn] Au, Chak-Tong [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2011

Schlagwörter:	ZSM-5 zeolite Methyl bromide Aromatic hydrocarbon Acid catalyst

Übergeordnetes Werk:	Enthalten in: Reaction kinetics and catalysis letters - Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974, 103(2011), 1 vom: 19. Feb., Seite 191-207
Übergeordnetes Werk:	volume:103 ; year:2011 ; number:1 ; day:19 ; month:02 ; pages:191-207

Links:	Volltext

DOI / URN:	10.1007/s11144-011-0292-5

Katalog-ID:	SPR01707097X

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520			\|a Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance.
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allfields	10.1007/s11144-011-0292-5 doi (DE-627)SPR01707097X (SPR)s11144-011-0292-5-e DE-627 ger DE-627 rakwb eng 540 ASE 35.13 bkl 35.17 bkl Tao, Ling verfasserin aut Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance. ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213 Li, Gui-Sheng verfasserin aut Yin, Shuang-Feng verfasserin aut Ou-Yang, Qiang verfasserin aut Luo, Sheng-Lian verfasserin aut Zhou, Xiao-Ping verfasserin aut Au, Chak-Tong verfasserin aut Enthalten in Reaction kinetics and catalysis letters Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974 103(2011), 1 vom: 19. Feb., Seite 191-207 (DE-627)320588882 (DE-600)2018650-2 1588-2837 nnns volume:103 year:2011 number:1 day:19 month:02 pages:191-207 https://dx.doi.org/10.1007/s11144-011-0292-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 35.13 ASE 35.17 ASE AR 103 2011 1 19 02 191-207
spelling	10.1007/s11144-011-0292-5 doi (DE-627)SPR01707097X (SPR)s11144-011-0292-5-e DE-627 ger DE-627 rakwb eng 540 ASE 35.13 bkl 35.17 bkl Tao, Ling verfasserin aut Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance. ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213 Li, Gui-Sheng verfasserin aut Yin, Shuang-Feng verfasserin aut Ou-Yang, Qiang verfasserin aut Luo, Sheng-Lian verfasserin aut Zhou, Xiao-Ping verfasserin aut Au, Chak-Tong verfasserin aut Enthalten in Reaction kinetics and catalysis letters Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974 103(2011), 1 vom: 19. Feb., Seite 191-207 (DE-627)320588882 (DE-600)2018650-2 1588-2837 nnns volume:103 year:2011 number:1 day:19 month:02 pages:191-207 https://dx.doi.org/10.1007/s11144-011-0292-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 35.13 ASE 35.17 ASE AR 103 2011 1 19 02 191-207
allfields_unstemmed	10.1007/s11144-011-0292-5 doi (DE-627)SPR01707097X (SPR)s11144-011-0292-5-e DE-627 ger DE-627 rakwb eng 540 ASE 35.13 bkl 35.17 bkl Tao, Ling verfasserin aut Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance. ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213 Li, Gui-Sheng verfasserin aut Yin, Shuang-Feng verfasserin aut Ou-Yang, Qiang verfasserin aut Luo, Sheng-Lian verfasserin aut Zhou, Xiao-Ping verfasserin aut Au, Chak-Tong verfasserin aut Enthalten in Reaction kinetics and catalysis letters Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974 103(2011), 1 vom: 19. Feb., Seite 191-207 (DE-627)320588882 (DE-600)2018650-2 1588-2837 nnns volume:103 year:2011 number:1 day:19 month:02 pages:191-207 https://dx.doi.org/10.1007/s11144-011-0292-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 35.13 ASE 35.17 ASE AR 103 2011 1 19 02 191-207
allfieldsGer	10.1007/s11144-011-0292-5 doi (DE-627)SPR01707097X (SPR)s11144-011-0292-5-e DE-627 ger DE-627 rakwb eng 540 ASE 35.13 bkl 35.17 bkl Tao, Ling verfasserin aut Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance. ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213 Li, Gui-Sheng verfasserin aut Yin, Shuang-Feng verfasserin aut Ou-Yang, Qiang verfasserin aut Luo, Sheng-Lian verfasserin aut Zhou, Xiao-Ping verfasserin aut Au, Chak-Tong verfasserin aut Enthalten in Reaction kinetics and catalysis letters Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974 103(2011), 1 vom: 19. Feb., Seite 191-207 (DE-627)320588882 (DE-600)2018650-2 1588-2837 nnns volume:103 year:2011 number:1 day:19 month:02 pages:191-207 https://dx.doi.org/10.1007/s11144-011-0292-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 35.13 ASE 35.17 ASE AR 103 2011 1 19 02 191-207
allfieldsSound	10.1007/s11144-011-0292-5 doi (DE-627)SPR01707097X (SPR)s11144-011-0292-5-e DE-627 ger DE-627 rakwb eng 540 ASE 35.13 bkl 35.17 bkl Tao, Ling verfasserin aut Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance. ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213 Li, Gui-Sheng verfasserin aut Yin, Shuang-Feng verfasserin aut Ou-Yang, Qiang verfasserin aut Luo, Sheng-Lian verfasserin aut Zhou, Xiao-Ping verfasserin aut Au, Chak-Tong verfasserin aut Enthalten in Reaction kinetics and catalysis letters Dordrecht [u.a.] : Springer Science + Business Media B.V, 1974 103(2011), 1 vom: 19. Feb., Seite 191-207 (DE-627)320588882 (DE-600)2018650-2 1588-2837 nnns volume:103 year:2011 number:1 day:19 month:02 pages:191-207 https://dx.doi.org/10.1007/s11144-011-0292-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_152 GBV_ILN_161 GBV_ILN_171 GBV_ILN_187 GBV_ILN_224 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 35.13 ASE 35.17 ASE AR 103 2011 1 19 02 191-207
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source	Enthalten in Reaction kinetics and catalysis letters 103(2011), 1 vom: 19. Feb., Seite 191-207 volume:103 year:2011 number:1 day:19 month:02 pages:191-207
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The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). 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author	Tao, Ling
spellingShingle	Tao, Ling ddc 540 bkl 35.13 bkl 35.17 misc ZSM-5 zeolite misc Methyl bromide misc Aromatic hydrocarbon misc Acid catalyst Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics
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topic_title	540 ASE 35.13 bkl 35.17 bkl Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics ZSM-5 zeolite (dpeaa)DE-He213 Methyl bromide (dpeaa)DE-He213 Aromatic hydrocarbon (dpeaa)DE-He213 Acid catalyst (dpeaa)DE-He213
topic	ddc 540 bkl 35.13 bkl 35.17 misc ZSM-5 zeolite misc Methyl bromide misc Aromatic hydrocarbon misc Acid catalyst
topic_unstemmed	ddc 540 bkl 35.13 bkl 35.17 misc ZSM-5 zeolite misc Methyl bromide misc Aromatic hydrocarbon misc Acid catalyst
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title	Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics
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title_full	Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics
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author_browse	Tao, Ling Li, Gui-Sheng Yin, Shuang-Feng Ou-Yang, Qiang Luo, Sheng-Lian Zhou, Xiao-Ping Au, Chak-Tong
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title_sort	synthesis and characterization of h-zsm-5 zeolites and their catalytic performance in $ ch_{3} $br conversion to aromatics
title_auth	Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics
abstract	Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance.
abstractGer	Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance.
abstract_unstemmed	Abstract Described in this paper are the synthesis, characterization and catalytic application of H-ZSM-5 zeolites for the conversion of $ CH_{3} $Br into aromatics. The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. It was found that with crystallinity enhancement and/or decline in crystal size, there is improvement of catalytic performance.
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title_short	Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics
url	https://dx.doi.org/10.1007/s11144-011-0292-5
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up_date	2024-07-04T02:06:18.381Z
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The H-ZSM-5 zeolites were fabricated by hydrothermal crystallization using n-butylamine (BTA) as a template and characterized by XRD, SEM and $ NH_{3} $-TPD techniques. The effects of batch $ SiO_{2} $/$ Al_{2} %$ O_{3} $ ratio, alkalinity, NaCl/$ Al_{2} %$ O_{3} $ ratio, seed crystals, and crystallization time on the yield, structure/texture and catalytic performance were systematically studied. Adopting the optimum sol ($ SiO_{2} $/$ Al_{2} %$ O_{3} $ = 70, BTA/$ SiO_{2} $ = 0.2847, $ Na_{2} $O/$ SiO_{2} $ = 0.1237, $ H_{2} $O/$ SiO_{2} $ = 37.4, NaCl/$ Al_{2} %$ O_{3} $ = 60, and seed/$ SiO_{2} $ = 5 wt%) and under the most preferable crystallization conditions of 100 °C/24 h–170 °C/24 h, H-ZSM-5 zeolites of high crystallinity and small size (300–700 nm) were obtained. Good catalytic performance was observed over the H-ZSM-5 zeolites (aromatic yield up to 44.2%). However, unlike the modification of large commercial HZSM-5, the use of $ MoO_{3} $ or PbO as modifying agents for the small-size H-ZSM-5 zeolites results in a decline of catalytic performance. The relationship between the structure and the catalytic efficiency of as-synthesized H-ZSM-5 samples were investigated. 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Synthesis and characterization of H-ZSM-5 zeolites and their catalytic performance in $ CH_{3} $Br conversion to aromatics

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