Acid assisted desulfurization of 4,6-dimethyldibenzothiophene and its reaction network over mixture of Ni-HY zeolite and CoMo/Al2O3

Takaaki Isoda, Shinichi Nagao, Yozo Korai, Isao Mochida

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Hydrodesulfurization (HDS) reactivities of gas oil and a refractory sulfur species, 4,6-dimethyldibenzothiophene (4,6-DMDBT), in decane were examined over a mechanical mixture of Ni loaded Y-zeolite and CoMo/Al2O3 (mixed catalyst). The mixed catalyst exhibited higher activity for desulfurization of alkyldibenzothiophenes in gas oil than that of CoMo/Al2O3 alone. Desulfurization reactivity of 4,6-DMDBT was doubled by methyl migration from 4-position to 3-position in the substance to moderate the steric hindrance of the methyl groups as revealed in two-stage desulfurization reaction in which Ni-HY was used in the first stage and CoMo/Al2O3 in the second stage.

Original languageEnglish
Pages (from-to)22-28
Number of pages7
JournalSekiyu Gakkaishi (Journal of the Japan Petroleum Institute)
Volume41
Issue number1
DOIs
Publication statusPublished - 1998

All Science Journal Classification (ASJC) codes

  • Fuel Technology
  • Energy Engineering and Power Technology

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