Please use this identifier to cite or link to this item:
Title: Comparative studies of manganese-doped copper-based catalysts: The promoter effect of Mn on methanol synthesis
Authors: Chen, H.Y.
Lin, J. 
Tan, K.L. 
Li, J.
Keywords: Cu/ZnO/Al2O3
Methanol synthesis
Mn promoter
Issue Date: Apr-1998
Citation: Chen, H.Y.,Lin, J.,Tan, K.L.,Li, J. (1998-04). Comparative studies of manganese-doped copper-based catalysts: The promoter effect of Mn on methanol synthesis. Applied Surface Science 126 (3-4) : 323-331. ScholarBank@NUS Repository.
Abstract: A Mn-promoted Cu/ZnO/Al2O3 catalyst with 5-10% improvement in methanol yield as compared with the undoped Cu/ZnO/Al2O3 catalyst under identical conditions has been synthesized. In order to understand the promoter effect of Mn on the methanol production, Cu/Al2O3 and Cu/SiO2 catalysts with and without various amounts of Mn were also prepared and comparatively investigated by microreactor, N2O titration, TPR (Temperature Programmed Reduction) and XPS (X-ray Photoelectron Spectroscopy). Experimental results show that these Mn-promoted catalysts have higher catalytic activity, larger surface Cu concentration, and elevated Cu reduction temperature than their Mn-undoped counterparts. XPS study gives evidence that in the reduced or reacted catalysts, the interaction between Mn and Cu occurs, resulting in the reduction of Mn4+ to Mn2+ or Mn3+, as well as the oxidation of Cu0 and Cu+ to higher oxidation states. This interaction may be responsible for the harder Cu reduction process, better Cu dispersion, higher active center concentration, and thus enhanced methanol yield. © 1998 Elsevier Science B.V.
Source Title: Applied Surface Science
ISSN: 01694332
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

checked on Nov 30, 2019

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.