ISSN:
1572-879X
Keywords:
Catalytic activity
;
hydrodesulfurization
;
mixed sulfides
;
homogeneous sulfide precipitation
;
impregnated thiosalt decomposition
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Two sets of samples, ranging from molybdenum sulfide to cobalt sulfide, were prepared by two different methods: homogeneous sulfide precipitation (HSP), and a new preparation method of CoMo and NiMo bulk sulfides, called impregnated thiosalt decomposition (ITD). Hydrodesulfurization of thiophene was measured at temperatures between 533 K and 593 K in a conventional flow system. The products were analyzed by gas chromatography. Both sets of samples (HSP and ITD) present the typical volcano curve of specific activity with larger values for catalysts prepared by HSP than those by ITD. Samples prepared by ITD present comparable intrinsic activities than those prepared by HSP. Activation energies for both methods of preparation are larger for promoted catalysts with a value of 23 for HSP and 12.6 kcal/mol for ITD.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00766398
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