ISSN:
0268-2605
Keywords:
Rochow reaction
;
contact mass
;
copper silicides
;
η-Cu3Si
;
X-ray diffraction
;
particle size
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Various Rochow contact masses have been characterized by catalytic tests as well as by X-ray diffraction with respect to η-Cu3Si percentage and particle size. The presence of η-Cu3Si in the contact masses is neither a necessary nor a sufficient precondition of catalytic activity, but a certain contribution of dispersed η-Cu3Si to the activity cannot be excluded. The results can be explained consistently by assuming highly dispersed or even two-dimensional Cu-Si species, not detectable by X-rays, as catalytically active species. The promoters zinc, antimony and tin do not significantly change the percentage and particle size of η-Cu3Si.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aoc.590090803
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