In Situ EXAFS Studies on Ni2P Hydrodesulfurization Catalysts in the Presence of High Pressure and High Temperature Oil

Journal Article · Fri Feb 02 00:00:00 EST 2007 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2644609· OSTI ID:21054696

Kawai, Toshihide; Asakura, Kiyotaka ^[1]; Bando, Kyoko K ^[2]; Lee, Yong-Kul; Oyama, S Ted ^[3]; Chun, Wang-Jae ^[1]

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1. Catalysis Research Center, Hokkaido University, Sapporo 001-0021 (Japan)
2. National Institute of Advanced Industrial Science and Technology, 16-1, Onogawa, Tsukuba, 305-8569 (Japan)
3. Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 (United States)

A Ni2P/SiO2 catalyst that is highly active for hydrodesulfurization (HDS) reaction was studied by in situ extended x-ray absorption fine structure (EXAFS) under the real reaction conditions. The measurements were conducted at realistic conditions of high pressure (3 MPa) and high temperature (613 K) in the presence of model oil. We used a low-volume cell with cubic boron nitride windows. The obtained spectra revealed that the bulk Ni2P structure was stable at reaction conditions and that the active surface had Ni-S bonds under reaction conditions, which played an important role for HDS reactions.

• OSTI ID: 21054696
• Journal Information: AIP Conference Proceedings, Vol. 882, Issue 1; Conference: XAFS13: 13. international conference on X-ray absorption fine structure, Stanford, CA (United States), 9-14 Jul 2006; Other Information: DOI: 10.1063/1.2644609; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
BORON NITRIDES
CATALYSIS
CATALYSTS
FINE STRUCTURE
INTERFACES
NICKEL PHOSPHIDES
OILS
PRESSURE DEPENDENCE
PRESSURE RANGE MEGA PA 10-100
REFINING
SILICON OXIDES
SURFACES
TEMPERATURE DEPENDENCE
X-RAY SPECTRA
X-RAY SPECTROSCOPY