N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity
The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between sev...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Frank, B. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2005 |
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| Systematik: |
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| Anmerkung: |
© Springer Science+Business Media, Inc. 2005 |
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| Übergeordnetes Werk: |
Enthalten in: Catalysis letters - Kluwer Academic Publishers-Plenum Publishers, 1988, 100(2005), 3-4 vom: Apr., Seite 181-187 |
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volume:100 ; year:2005 ; number:3-4 ; month:04 ; pages:181-187 |
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| DOI / URN: |
10.1007/s10562-004-3452-7 |
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| 520 | |a The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. | ||
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10.1007/s10562-004-3452-7 doi (DE-627)OLC2040160647 (DE-He213)s10562-004-3452-7-p DE-627 ger DE-627 rakwb eng 540 660 VZ VA 2890 VZ rvk Frank, B. verfasserin aut N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity 2005 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2005 The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. Habel, D. aut Schomäcker, R. aut Enthalten in Catalysis letters Kluwer Academic Publishers-Plenum Publishers, 1988 100(2005), 3-4 vom: Apr., Seite 181-187 (DE-627)130436550 (DE-600)644234-1 (DE-576)025720724 1011-372X nnns volume:100 year:2005 number:3-4 month:04 pages:181-187 https://doi.org/10.1007/s10562-004-3452-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_21 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2010 GBV_ILN_2016 GBV_ILN_4012 GBV_ILN_4305 GBV_ILN_4307 VA 2890 AR 100 2005 3-4 04 181-187 |
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10.1007/s10562-004-3452-7 doi (DE-627)OLC2040160647 (DE-He213)s10562-004-3452-7-p DE-627 ger DE-627 rakwb eng 540 660 VZ VA 2890 VZ rvk Frank, B. verfasserin aut N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity 2005 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2005 The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. Habel, D. aut Schomäcker, R. aut Enthalten in Catalysis letters Kluwer Academic Publishers-Plenum Publishers, 1988 100(2005), 3-4 vom: Apr., Seite 181-187 (DE-627)130436550 (DE-600)644234-1 (DE-576)025720724 1011-372X nnns volume:100 year:2005 number:3-4 month:04 pages:181-187 https://doi.org/10.1007/s10562-004-3452-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_21 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2010 GBV_ILN_2016 GBV_ILN_4012 GBV_ILN_4305 GBV_ILN_4307 VA 2890 AR 100 2005 3-4 04 181-187 |
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10.1007/s10562-004-3452-7 doi (DE-627)OLC2040160647 (DE-He213)s10562-004-3452-7-p DE-627 ger DE-627 rakwb eng 540 660 VZ VA 2890 VZ rvk Frank, B. verfasserin aut N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity 2005 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2005 The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. Habel, D. aut Schomäcker, R. aut Enthalten in Catalysis letters Kluwer Academic Publishers-Plenum Publishers, 1988 100(2005), 3-4 vom: Apr., Seite 181-187 (DE-627)130436550 (DE-600)644234-1 (DE-576)025720724 1011-372X nnns volume:100 year:2005 number:3-4 month:04 pages:181-187 https://doi.org/10.1007/s10562-004-3452-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_21 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2010 GBV_ILN_2016 GBV_ILN_4012 GBV_ILN_4305 GBV_ILN_4307 VA 2890 AR 100 2005 3-4 04 181-187 |
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10.1007/s10562-004-3452-7 doi (DE-627)OLC2040160647 (DE-He213)s10562-004-3452-7-p DE-627 ger DE-627 rakwb eng 540 660 VZ VA 2890 VZ rvk Frank, B. verfasserin aut N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity 2005 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2005 The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. Habel, D. aut Schomäcker, R. aut Enthalten in Catalysis letters Kluwer Academic Publishers-Plenum Publishers, 1988 100(2005), 3-4 vom: Apr., Seite 181-187 (DE-627)130436550 (DE-600)644234-1 (DE-576)025720724 1011-372X nnns volume:100 year:2005 number:3-4 month:04 pages:181-187 https://doi.org/10.1007/s10562-004-3452-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_21 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2010 GBV_ILN_2016 GBV_ILN_4012 GBV_ILN_4305 GBV_ILN_4307 VA 2890 AR 100 2005 3-4 04 181-187 |
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10.1007/s10562-004-3452-7 doi (DE-627)OLC2040160647 (DE-He213)s10562-004-3452-7-p DE-627 ger DE-627 rakwb eng 540 660 VZ VA 2890 VZ rvk Frank, B. verfasserin aut N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity 2005 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media, Inc. 2005 The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. Habel, D. aut Schomäcker, R. aut Enthalten in Catalysis letters Kluwer Academic Publishers-Plenum Publishers, 1988 100(2005), 3-4 vom: Apr., Seite 181-187 (DE-627)130436550 (DE-600)644234-1 (DE-576)025720724 1011-372X nnns volume:100 year:2005 number:3-4 month:04 pages:181-187 https://doi.org/10.1007/s10562-004-3452-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-CHE GBV_ILN_21 GBV_ILN_65 GBV_ILN_70 GBV_ILN_2010 GBV_ILN_2016 GBV_ILN_4012 GBV_ILN_4305 GBV_ILN_4307 VA 2890 AR 100 2005 3-4 04 181-187 |
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N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity |
| abstract |
The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. © Springer Science+Business Media, Inc. 2005 |
| abstractGer |
The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. © Springer Science+Business Media, Inc. 2005 |
| abstract_unstemmed |
The reaction of aniline with ethanol was carried out over an industrial niobic acid catalyst in a fixed bed reactor at atmospheric pressure and 220–260 °C. The main products, N-ethylaniline and N,N-diethylaniline were formed consecutively. A kinetic study including a model discrimination between several Hougen/Watson type rate equations led to an Eley/Rideal mechanism, where the reaction of gas phase aniline with adsorbed ethanol is the rate determining step. As second adsorbing agent, water inhibits the reaction in higher partial pressures. N-alkylation was the main reaction observed but the addition of water decreased the selectivity and up to 15% C-alkylated products were found. The apparent activation energies for the first and second N-ethylation are 85.6 and 70.7 kJ/mol, respectively. The high equilibrium constants indicate a nearly irreversible reaction. © Springer Science+Business Media, Inc. 2005 |
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N-alkylation of aniline with ethanol over an industrial niobic acid catalyst – influence of water formation on kinetics and selectivity |
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