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Surface enrichment in CuO x /ZnO samples at low Cu contents
Author(s) -
Reyes Patricio,
Sermon Paul A.
Publication year - 1990
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740151008
Subject(s) - x ray photoelectron spectroscopy , calcination , copper , methanol , catalysis , chemistry , chemical engineering , materials science , metallurgy , organic chemistry , engineering
A recent report (G. Moretti et al., Surf. Interface Anal. 14, 325 (1989)) in this journal has used XPS to show unequivocally that surface enrichment of calcined CuO x /ZnO co‐precipitates does not occur substantially; here, similar evidence for samples of low Cu content suggests that surface enrichment by copper does occur. This is an important finding for model precursors of methanol synthesis catalysts.