Development of hydrodesulfurization catalyst using comparative model feed reactions and quantum chemical studies

H. Nakamura, M. Amemiya, R. Koide, E.J.M. Hensen, R.A. Van Santen, K. Ishida

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
5 Downloads (Pure)

Abstract

Model HDS catalysts (NiW, NiCoMo, NiMo, CoMo/γ-Al2O3) were used in the HDS of dibenzothiophene and 4,6-dimethyldibenzothiophene (4,6-DMDBT), with and without the addition of H2S or NH3. The highest HDS performance was achieved using NiCoMo catalyst in the presence of additives, while NiMo was the best catalyst in the absence of additives. The hydrogenation (HYD) selectivities of NiMo and NiCoMo catalysts were higher than that of CoMo. The presence of NH3 significantly decreased the overall reaction rate constant for the conversion of 4,6-DMDBT for the catalysts to a great extent. The addition of NH3 decreased significantly the reaction rate constant of CoMo catalyst. A comparison of the HDS reaction mechanism via HYD and the direct desulfurization (DDS) rate constants among catalysts showed that the ranking of HYD and DDS rate constants is dependent on the catalyst and the additives. This is an abstract of a paper presented at the 18th Saudi Arabia-Japan Joint Symposium (Dhahran, Saudi Arabia 11/16-17/2008).

Original languageEnglish
Title of host publication18th Annual Saudi-Japan Symposium on Catalysts in Petroleum Refining and Petrochemicals,16-17 November 2008, Dhahran, Saudi Arabia
PublisherKing Fahd University of Petroleum and Minerals
Pages15-24
Number of pages10
ISBN (Print)9781605609508
Publication statusPublished - 1 Dec 2008
Event18th Annual Saudi-Japan Symposium on Catalysts in Petroleum Refining and Petrochemicals - Dhahran, Saudi Arabia
Duration: 16 Nov 200817 Nov 2008
Conference number: 18

Conference

Conference18th Annual Saudi-Japan Symposium on Catalysts in Petroleum Refining and Petrochemicals
CountrySaudi Arabia
CityDhahran
Period16/11/0817/11/08

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