Radioisotopic study of (Co)Mo/Al2O3 sulfide catalysts for HDS: Part III. Poisoning by N-containing compounds

作者: V.M Kogan , R.G Gaziev , S.W Lee , N.N Rozhdestvenskaya

DOI: 10.1016/S0926-860X(03)00312-0

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摘要: By using radioisotopic testing technique a poisoning effect of N-containing compounds on sulfided-( 35 S) (Co)Mo catalysts in the reaction thiophene hydrodesulfurization (HDS) has been studied. In course experiments number, distribution and reactivity surface SH groups various types related functioning vacancies as well catalytic activity poisoned non-poisoned Mo CoMo have measured. It shown that desulfurization (DS) hydrogenation (HYD) reactions mostly proceed same sites. These sites are attributed “rapid” belong to Mo. The results compared with literature data HDS dibezothiophene (DBT) its methyl derivatives. comparison 4-methyl- 4,6-dimethyldibenzothiophenes CoMoS demonstrate stronger resistance HYD than DS ones. HDS, opposite trend. suggested alkyl derivatives DBT all should while DBT—on Co products take place A method evaluate efficiency (Co)MoS for crudes developed. © 2003 Elsevier Science B.V. All rights reserved.

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