Influences of nitrogen species on the hydrodesulfurization reactivity of a gas oil over sulfide spent catalysts

Sri Djangkung Sumbogo Murti, Ki Hyouk Choi, Yozo Korai, Isao Mochida

研究成果: ジャーナルへの寄稿Conference article

1 引用 (Scopus)


Spent NiMo and CoMo alumina catalysts were evaluated in the HDS reactivities of gas oil and its nitrogen species-free oil, in term of gross and molecular based desulfurization behaviors. Spent catalysts lost their activity apparently due to the carbon deposition, which covered the active sites. Such carbon deposition reduced the acidity of NiMo catalyst while activity of CoMe could survive. Such carbon deposition changed the catalyst performances for the HDS against reactive and refractory sulfur species of original and NF oil in single and two-stage reaction. The activity for refractory sulfur species was reduced more than that for the reactive species. The effect of two-stage and n-removal were markedly reduced over spent NiMo while rather limited over spent CoMo. Loss of activity by carbon deposition might be related with such changes in catalytic selectivity.

ジャーナルACS Division of Fuel Chemistry, Preprints
出版物ステータス出版済み - 3 1 2003
イベントProceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference - San Antonio, TX, 米国
継続期間: 3 10 20033 12 2003


All Science Journal Classification (ASJC) codes

  • Energy(all)