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 journalArticlepeer-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)/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.

Original languageEnglish
Article number4365
Pages (from-to)183-187
Number of pages5
JournalCatalysis Communications
Volume69
DOIs
StatePublished - 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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