Effect of syngas conversion and catalyst reduction temperature in the synthesis of ethanol: concentration of water vapor in mesoporous Rh/MCM-41 catalyst
2015 (English)In: Catalysis communications, ISSN 1566-7367, E-ISSN 1873-3905, Vol. 69, 183-187 p.Article in journal (Refereed) Published
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 degrees C, 30-90 bar and 6000-40,000 ml(syngas)/gcat h). The same effect is obtained at different catalyst reduction temperatures (200 degrees C and 500 degrees 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 H-2. (C) 2015 Elsevier B.V. All rights reserved.
Place, publisher, year, edition, pages
2015. Vol. 69, 183-187 p.
Ethanol, Reduction temperature, Rh/MCM-41, Syngas conversion
IdentifiersURN: urn:nbn:se:kth:diva-173417DOI: 10.1016/j.catcom.2015.06.015ISI: 000359885900039ScopusID: 2-s2.0-84934278111OAI: oai:DiVA.org:kth-173417DiVA: diva2:853964
QC 201509152015-09-152015-09-112015-09-15Bibliographically approved