Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol: concentration of water vapor in mesoporous Rh/MCM-41 catalyst

Luis Lopez; Jorge Velasco; Saul Cabrera; Magali Boutonnet; Sven Järås

doi:10.1016/j.catcom.2015.06.015

Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol: concentration of water vapor in mesoporous Rh/MCM-41 catalyst

Luis Lopez, Jorge Velasco, Saul Cabrera, Magali Boutonnet, Sven Järås

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Abstract Rh-based catalysts typically show low selectivity to CO₂ in the synthesis of ethanol from syngas. However, a novel mesoporous Rh/MCM-41 catalyst shows high selectivity to CO₂ in a large range of syngas conversions; 1% to 68%, regulated by adjusting the operation conditions (270-430 °C, 30-90 bar and 6000-40,000 ml_(syngas)/g_cat h). The same effect is obtained at different catalyst reduction temperatures (200 °C and 500 °C) as well as on the non-reduced catalyst. A high concentration of water vapor seems to occur in the pores of Rh/MCM-41 which may promote the water-gas-shift-reaction, producing extra CO₂ and H₂.

Original language	English
Article number	4365
Pages (from-to)	183-187
Number of pages	5
Journal	Catalysis Communications
Volume	69
DOIs	https://doi.org/10.1016/j.catcom.2015.06.015
State	Published - 3 Jul 2015

Bibliographical note

Funding Information:
The Swedish International Development Cooperation Agency (SIDA) is gratefully acknowledged for financial support.

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

Ethanol
Reduction temperature
Rh/MCM-41
Syngas conversion

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10.1016/j.catcom.2015.06.015

Cite this

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title = "Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol: concentration of water vapor in mesoporous Rh/MCM-41 catalyst",

abstract = "Abstract Rh-based catalysts typically show low selectivity to CO2 in the synthesis of ethanol from syngas. However, a novel mesoporous Rh/MCM-41 catalyst shows high selectivity to CO2 in a large range of syngas conversions; 1% to 68%, regulated by adjusting the operation conditions (270-430 °C, 30-90 bar and 6000-40,000 ml(syngas)/gcat h). The same effect is obtained at different catalyst reduction temperatures (200 °C and 500 °C) as well as on the non-reduced catalyst. A high concentration of water vapor seems to occur in the pores of Rh/MCM-41 which may promote the water-gas-shift-reaction, producing extra CO2 and H2.",

keywords = "Ethanol, Reduction temperature, Rh/MCM-41, Syngas conversion",

author = "Luis Lopez and Jorge Velasco and Saul Cabrera and Magali Boutonnet and Sven J{\"a}r{\aa}s",

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year = "2015",

month = jul,

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doi = "10.1016/j.catcom.2015.06.015",

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TY - JOUR

T1 - Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol

T2 - concentration of water vapor in mesoporous Rh/MCM-41 catalyst

AU - Lopez, Luis

AU - Velasco, Jorge

AU - Cabrera, Saul

AU - Boutonnet, Magali

AU - Järås, Sven

PY - 2015/7/3

Y1 - 2015/7/3

N2 - Abstract Rh-based catalysts typically show low selectivity to CO2 in the synthesis of ethanol from syngas. However, a novel mesoporous Rh/MCM-41 catalyst shows high selectivity to CO2 in a large range of syngas conversions; 1% to 68%, regulated by adjusting the operation conditions (270-430 °C, 30-90 bar and 6000-40,000 ml(syngas)/gcat h). The same effect is obtained at different catalyst reduction temperatures (200 °C and 500 °C) as well as on the non-reduced catalyst. A high concentration of water vapor seems to occur in the pores of Rh/MCM-41 which may promote the water-gas-shift-reaction, producing extra CO2 and H2.

AB - Abstract Rh-based catalysts typically show low selectivity to CO2 in the synthesis of ethanol from syngas. However, a novel mesoporous Rh/MCM-41 catalyst shows high selectivity to CO2 in a large range of syngas conversions; 1% to 68%, regulated by adjusting the operation conditions (270-430 °C, 30-90 bar and 6000-40,000 ml(syngas)/gcat h). The same effect is obtained at different catalyst reduction temperatures (200 °C and 500 °C) as well as on the non-reduced catalyst. A high concentration of water vapor seems to occur in the pores of Rh/MCM-41 which may promote the water-gas-shift-reaction, producing extra CO2 and H2.

KW - Ethanol

KW - Reduction temperature

KW - Rh/MCM-41

KW - Syngas conversion

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DO - 10.1016/j.catcom.2015.06.015

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VL - 69

SP - 183

EP - 187

JO - Catalysis Communications

JF - Catalysis Communications

SN - 1566-7367

M1 - 4365

ER -

Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol: concentration of water vapor in mesoporous Rh/MCM-41 catalyst

Abstract

Bibliographical note

Keywords

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