Preparation and characterization of nano-sized CoMo/Al2O 3 catalyst for hydrodesulfurization

Ki Hyouk Choi, Yozo Korai, Isao Mochida

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)


CoMo on Al2O3 catalyst prepared by spray pyrolysis method was found in the form of spheres of 0.5-1.2 μm, which consisted of tiny primary particles of ca. 10-20nm diameter. The materials shows comparable activity to those of commercial catalysts in HDS of straight run gas oil, in particular, refractory 4,6-dimethyldibenzothiophene (4,6-DMDBT). Weaker interactions between CoMo and Al2O3 are suggested by temperature-programmed reduction (TPR), Raman spectroscopy, to give more active species than those over the impregnated catalysts. This accounts for its comparable activity in spite of its smaller surface area.

Original languageEnglish
Pages (from-to)229-236
Number of pages8
JournalApplied Catalysis A: General
Issue number2
Publication statusPublished - Apr 8 2004

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology


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