ESR detection of copper ion clusters in the Cu-Zn-Al oxide catalysts for methanol synthesis

Authors
Altynnikov, AA Anufrienko, VF Rozovskii, AY Lin, GI Lunina, EV Sadykov, VA
Citation
Aa. Altynnikov et al., ESR detection of copper ion clusters in the Cu-Zn-Al oxide catalysts for methanol synthesis, KINET CATAL, 40(1), 1999, pp. 117-120
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics","Chemical Engineering
Journal title
KINETICS AND CATALYSIS
ISSN journal
00231584 → ACNP
Volume
40
Issue
1
Year of publication
1999
Pages
117 - 120
Database
ISI
SICI code
0023-1584(199901/02)40:1<117:EDOCIC>2.0.ZU;2-#
Abstract
It was found by ESR spectroscopy that the treatment of the Cu-Zn-Al oxide c atalysts for methanol synthesis with pyridine did not produce isolated pyri dinate complexes. In this case, three types of copper clusters were formed; two of them were assigned to the ordered Jahn-Teller clusters. It was sugg ested that the cluster structures consist of the Cu2+-O-M-O-Cu2+ oxide frag ments (where IM is the Al3+, Zn2+, and Cu2+ ion), which were not decomposed upon treatment with pyridine.