Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate
Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released fro...
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| Autor*in: |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
1997 |
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| Umfang: |
5 |
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| Reproduktion: |
Springer Online Journal Archives 1860-2002 |
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| Übergeordnetes Werk: |
in: Catalysis letters - 1988, 46(1997) vom: März/Apr., Seite 261-265 |
| Übergeordnetes Werk: |
volume:46 ; year:1997 ; month:03/04 ; pages:261-265 ; extent:5 |
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| 245 | 1 | 0 | |a Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate |
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| 520 | |a Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. | ||
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(DE-627)NLEJ19677490X DE-627 ger DE-627 rakwb eng Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. Springer Online Journal Archives 1860-2002 Li, W. oth Ueda, W. oth in Catalysis letters 1988 46(1997) vom: März/Apr., Seite 261-265 (DE-627)NLEJ188994181 (DE-600)1501518-x 1572-879X nnns volume:46 year:1997 month:03/04 pages:261-265 extent:5 http://dx.doi.org/10.1023/A:1019095208092 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 46 1997 3/4 261-265 5 |
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(DE-627)NLEJ19677490X DE-627 ger DE-627 rakwb eng Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. Springer Online Journal Archives 1860-2002 Li, W. oth Ueda, W. oth in Catalysis letters 1988 46(1997) vom: März/Apr., Seite 261-265 (DE-627)NLEJ188994181 (DE-600)1501518-x 1572-879X nnns volume:46 year:1997 month:03/04 pages:261-265 extent:5 http://dx.doi.org/10.1023/A:1019095208092 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 46 1997 3/4 261-265 5 |
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(DE-627)NLEJ19677490X DE-627 ger DE-627 rakwb eng Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. Springer Online Journal Archives 1860-2002 Li, W. oth Ueda, W. oth in Catalysis letters 1988 46(1997) vom: März/Apr., Seite 261-265 (DE-627)NLEJ188994181 (DE-600)1501518-x 1572-879X nnns volume:46 year:1997 month:03/04 pages:261-265 extent:5 http://dx.doi.org/10.1023/A:1019095208092 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 46 1997 3/4 261-265 5 |
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(DE-627)NLEJ19677490X DE-627 ger DE-627 rakwb eng Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. Springer Online Journal Archives 1860-2002 Li, W. oth Ueda, W. oth in Catalysis letters 1988 46(1997) vom: März/Apr., Seite 261-265 (DE-627)NLEJ188994181 (DE-600)1501518-x 1572-879X nnns volume:46 year:1997 month:03/04 pages:261-265 extent:5 http://dx.doi.org/10.1023/A:1019095208092 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 46 1997 3/4 261-265 5 |
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(DE-627)NLEJ19677490X DE-627 ger DE-627 rakwb eng Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate 1997 5 nicht spezifiziert zzz rdacontent nicht spezifiziert z rdamedia nicht spezifiziert zu rdacarrier Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. Springer Online Journal Archives 1860-2002 Li, W. oth Ueda, W. oth in Catalysis letters 1988 46(1997) vom: März/Apr., Seite 261-265 (DE-627)NLEJ188994181 (DE-600)1501518-x 1572-879X nnns volume:46 year:1997 month:03/04 pages:261-265 extent:5 http://dx.doi.org/10.1023/A:1019095208092 GBV_USEFLAG_U ZDB-1-SOJ GBV_NL_ARTICLE AR 46 1997 3/4 261-265 5 |
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catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate |
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Catalytic oxidation of isobutane to methacrylic acid with molecular oxygen over activated pyridinium 12-molybdophosphate |
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Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. |
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Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. |
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Abstract Isobutane was catalytically oxidized to methacrylic acid with molecular oxygen above 300°C over 0 crystalline particles of pyridinium 12-molybdophosphates which were activated by heat-treatment under a nitrogen stream up to 420°C. During the treatment two third of pyridine were released from the sample and one third remained accompanied by the formation of orthorhombic structure. It was proved by IR studies that the catalyst became a reduced state by this treatment. The reduced state was highly stable even under catalytic oxidation conditions with molecular oxygen. 50% selectivity to methacrylic acid and 22% to acetic acid were achieved at 22% conversion of isobutane. The highly stable reduced state and structure of the activated heteropolymolybdophosphate catalyst seem to be responsible for the high activity for isobutane oxidation and high selectivity to methacrylic acid formation. |
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