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Title: Effect of ZrO2, Al2O3 and La2O3 on cobalt–copper catalysts for higher alcohols synthesis

Journal Article · · Applied Catalysis. A, General

In this work three cobalt–copper catalysts singly promoted with La, Zr, or Al were studied for catalytic conversion of syngas to higher alcohols. The properties of the promoted catalysts have been characterized by TPR, XRD, XPS and BET. CO hydrogenation was carried out in a plug-flow reactor under 30 bar, GHSV = 36000 scc/gcat/h, H2/CO = 2, and 250 °C at differential conversions. The catalyst activity and selectivity to higher alcohols are greatest on CuCoLa2O3 :ethanol selectivity 10.5% at a conversion of 0.76%. During 9 h of time-on-stream, CO conversion decreased on CuCoLa2O3 while methanol and higher alcohol selectivity increased. The behaviors on CuCoZrO2 and CuCoAl2O3 were different. On these two catalysts, CO conversion and selectivity reached a near-steady state much more quickly than CuCoLa2O3. These results suggest changes on CuCoLa2O3 that increase the selectivity for oxygenates continue with time, at least over the time scale investigated here.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Atomic-Level Catalyst Design (CALCD); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Material Sciences (CNMS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
Grant/Contract Number:
SC0001058
OSTI ID:
1369703
Alternate ID(s):
OSTI ID: 1250112
Journal Information:
Applied Catalysis. A, General, Vol. 507, Issue C; Related Information: CALCD partners with Louisiana State University (lead); Clemson University; University of Florida; Georgia Institute of Technology; Grambling State University; Oak Ridge National Laboratory; Ohio State University; Pennsylvania State; Texas A&M University; Vienna University of Technology, Austria; University of Utrecht, Netherlands; ISSN 0926-860X
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 37 works
Citation information provided by
Web of Science

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Cited By (5)

The Interplay between Structure and Product Selectivity of CO 2 Hydrogenation journal June 2019
Tuning the catalytic CO hydrogenation to straight- and long-chain aldehydes/alcohols and olefins/paraffins journal October 2016
Laser processed Ni-Fe alloys as electrocatalyst toward oxygen evolution reaction journal June 2018
Copper–cobalt catalysts supported on mechanically mixed HZSM-5 and γ-Al 2 O 3 for higher alcohols synthesis via carbon monoxide hydrogenation journal January 2019
Advances in direct production of value-added chemicals via syngas conversion journal April 2017