ISSN:
1572-879X
Keywords:
Rh-Mo double oxide
;
rhodium molybdenum alloy
;
metal-oxide interaction
;
dehydrogenation and hydrogenolysis of cyclohexane
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Rh double-oxide compound (MoRh2O6) supported on SiO2 was prepared by air calcination treatment of a molybdenum oxide-promoted Rh/SiO2 catalyst at 700 °C, and the chemisorptive and catalytic properties of the compound, as well as the changes in those behaviors by H2 reduction, have been studied. The MoRh2O6/SiO2 catalyst exhibited almost no ability of H2 and CO chemisorption, but a high activity for CO oxidation reaction. After H2 treatment at 200 °C, X-ray diffraction showed that the MoRh2O6 compound was reduced to a MoRh alloy, and this catalyst now exhibited a significant activity for the hydrogenolysis of cyclohexane. A drastic decrease in the activity was, however, observed after H2 treatment at 500 °C.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00764823
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