Active Phase of a NiSO4 Catalyst Supported on gamma-Al2O3 during in Situ Self-Sulfidation for Selective Hydrodesulfurization
发表时间：2019-03-09
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- 论文类型：
- 期刊论文
- 第一作者：
- Jin, Fengying
- 通讯作者：
- Wang, XS (reprint author), Dalian Univ Technol, Sch Chem Engn, Dept Catalysis Chem & Engn, 2 Linggong Rd, Dalian 116023, Peoples R China.
- 合写作者：
- Long, Huayun,Song, Wancang,Xiong, Guang,Guo, Xinwen,Wang, Xiangsheng
- 发表时间：
- 2013-06-01
- 发表刊物：
- ENERGY & FUELS
- 收录刊物：
- SCIE、EI、Scopus
- 文献类型：
- J
- 卷号：
- 27
- 期号：
- 6
- 页面范围：
- 3394-3399
- ISSN号：
- 0887-0624
- 摘要：
- NiSO4/gamma-Al2O3 catalysts with different Ni loadings were prepared by impregnation with an aqueous solution of nickel sulfate. The samples were characterized by X-ray powder diffraction, nitrogen physisorption, X-ray fluorescence, NH3 temperature-programmed desorption, UV Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS). XPS showed that the nickel sulfate can be partly in situ self-sulfided to NiSx by H-2 at an elevated temperature, especially when H2S is present in the reactor. The catalytic performances of NiSO4/gamma-Al2O3 catalysts were evaluated with a mixture of 2-methyl-2-butene, cyclohexane (3:97, volume ratio), and thiophene (0.1%, ratio of total weight) as a model feedstock. The 5-NiSO4/gamma-Al2O3 catalyst showed high activity in terms of high thiophene conversion (89%) and a high selectivity factor, 3.2. The kinetic study and Koros-Nowak test were carried out, and it was found that the pre-exponential factor (k(0)) and apparent activation energy (E-a) of thiophene hydrodesulfurization (HDS) were 10.4 X 10(-5) mol/(g.s) and 30.2 kJ/mol, respectively.
- 是否译文：
- 否
