Novel zeolite based support for NiMo sulfide in deep HDS of gas oil

Naoyuki Kunisada, Ki Hyouk Choi, Yozo Korai, Isao Mochida, Koji Nakano

研究成果: ジャーナルへの寄稿記事

53 引用 (Scopus)

抄録

Two types of alumina-USY supported NiMo catalysts (NMAZ and NMACZ) were examined in an autoclave for HDS of straight run gas oil (SRGO; S=11780ppm) and its hydrodesulfurized gas oils (HSRGO; S=340ppm) to simulate a first and second layer catalyst. One of the supports was a physical mixture of alumina and USY type zeolite (AZ), while the other was surface modified USY type zeolite with alumina (ACZ). Their supports alone (AZ and ACZ) were examined also to clarify the function of zeolite support during hydrodesulfurization (HDS) of gas oil. NMAZ was found to be active enough for HDS of SRGO to reduce sulfur content to 242ppm. The extensive cracking to produce light hydrocarbons is another characteristic of that catalyst. NMACZ was inferior to NMAZ in HDS of SRGO but superior in HDS of HSRGO in the presence of H2S and NH3, achieving 10.3ppm of sulfur. No cracking was observed over NMACZ which is another advantage of this catalyst. Extensive HDN took place over NMAZ but only moderate HDN over NMACZ. NH3 TPD and Raman spectroscopy of oxide forms of the catalysts indicate lower acidity of both catalysts and slightly better dispersion of MoO3 over the NMACZ, which had lower surface area than NMAZ. Zeoite-containing support alone adsorbed and desulfurized refractory sulfur species, especially 4,6-dimethyldibenzothiophene contained in HSRGO. HDS is suggested to be favored over the zeolite-containing supports by such mechanisms, in addition to their surface acidity, to enhance the hydrogenation and resistivity against H2S inhibitions.

元の言語英語
ページ(範囲)43-51
ページ数9
ジャーナルApplied Catalysis A: General
269
発行部数1-2
DOI
出版物ステータス出版済み - 8 18 2004

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Zeolites
Hydrodesulfurization
Sulfides
Gas oils
Aluminum Oxide
Catalysts
Sulfur
Alumina
Catalyst supports
Acidity
Autoclaves
Temperature programmed desorption
Hydrocarbons
Refractory materials
Oxides
Hydrogenation
Raman spectroscopy

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology

これを引用

Kunisada, N., Choi, K. H., Korai, Y., Mochida, I., & Nakano, K. (2004). Novel zeolite based support for NiMo sulfide in deep HDS of gas oil. Applied Catalysis A: General, 269(1-2), 43-51. https://doi.org/10.1016/j.apcata.2004.03.051

Novel zeolite based support for NiMo sulfide in deep HDS of gas oil. / Kunisada, Naoyuki; Choi, Ki Hyouk; Korai, Yozo; Mochida, Isao; Nakano, Koji.

:: Applied Catalysis A: General, 巻 269, 番号 1-2, 18.08.2004, p. 43-51.

研究成果: ジャーナルへの寄稿記事

Kunisada, N, Choi, KH, Korai, Y, Mochida, I & Nakano, K 2004, 'Novel zeolite based support for NiMo sulfide in deep HDS of gas oil', Applied Catalysis A: General, 巻. 269, 番号 1-2, pp. 43-51. https://doi.org/10.1016/j.apcata.2004.03.051
Kunisada, Naoyuki ; Choi, Ki Hyouk ; Korai, Yozo ; Mochida, Isao ; Nakano, Koji. / Novel zeolite based support for NiMo sulfide in deep HDS of gas oil. :: Applied Catalysis A: General. 2004 ; 巻 269, 番号 1-2. pp. 43-51.
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