Preparation, characterization and hydrodesulfurization performances of Co-Ni2P/SBA-15 catalysts

doi:10.1016/S2095-4956(15)60299-6

能源化学(英文) ›› 2015, Vol. 21 ›› Issue (2): 185-192.DOI: 10.1016/S2095-4956(15)60299-6

Preparation, characterization and hydrodesulfurization performances of Co-Ni₂P/SBA-15 catalysts

Zhou-jun Wang^a, Pingyi Wu^a,b, Ling Lan^b, Kunhong Liu^b, Yaqiong Hu^b, Shengfu Ji^a

a. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
b. Petrochemical Research Institute, PetroChina, Beijing 100195, China

收稿日期:2014-09-21 修回日期:2014-11-10 出版日期:2015-03-23 发布日期:2015-03-23
通讯作者: Shengfu Ji
基金资助:
This work was supported by the National Basic Research Program of China (2006CB202503) and PetroChina Innovation Foundation (2010D- 5006?0401).

Preparation, characterization and hydrodesulfurization performances of Co-Ni₂P/SBA-15 catalysts

Zhou-jun Wang^a, Pingyi Wu^a,b, Ling Lan^b, Kunhong Liu^b, Yaqiong Hu^b, Shengfu Ji^a

a. State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing 100029, China;
b. Petrochemical Research Institute, PetroChina, Beijing 100195, China

Received:2014-09-21 Revised:2014-11-10 Online:2015-03-23 Published:2015-03-23
Contact: Shengfu Ji
Supported by:
This work was supported by the National Basic Research Program of China (2006CB202503) and PetroChina Innovation Foundation (2010D- 5006-0401).

摘要/Abstract

摘要： A series of Co-Ni₂P/SBA-15 catalysts with various Co contents, Ni₂P contents and P/Ni molar ratios were prepared by impregnating nickel nitrate, diammonium hydrogen phosphate, and then cobalt nitrate into SBA-15 support followed by temperature-programmed reduction in a H₂ flow. The catalyst structure was characterized by X-ray diffraction (XRD), high resolution-transmission electron microscopy (HR-TEM) and N₂ adsorption-desorption techniques and their catalytic performance of the hydrodesulfurization (HDS) of dibenzothiophene (DBT) was evaluated. The effects of Co contents, Ni₂P contents and P/Ni molar ratios on the catalyst structure and HDS of DBT over the Co-Ni₂P/SBA-15 catalyst were investigated. The results indicated that the mesoporous structure was mainly maintained and the nickel phosphides were well dispersed in all of the characterized catalysts. The 4Co-25Ni₂P/SBA-15 (P/Ni=0.8) catalyst with the Co and Ni₂P contents of 4 wt% and 25 wt%, respectively, and the P/Ni molar ratio of 0.8 showed the highest catalytic performance for HDS of DBT. Under the reaction conditions of 380℃ and 3.0MPa, the DBT conversion can reach 99.62%. The HDS of DBT proceeded mainly via the direct desulfurization (DDS) pathway with biphenyl (BP) as the dominant product on all of the catalysts and the BP selectivity was slightly enhanced after the introduction of Co promoters.

关键词: Co, Ni₂P, dibenzothiophene, hydrodesulfurization, mesoporous, promoter

Abstract: A series of Co-Ni₂P/SBA-15 catalysts with various Co contents, Ni₂P contents and P/Ni molar ratios were prepared by impregnating nickel nitrate, diammonium hydrogen phosphate, and then cobalt nitrate into SBA-15 support followed by temperature-programmed reduction in a H₂ flow. The catalyst structure was characterized by X-ray diffraction (XRD), high resolution-transmission electron microscopy (HR-TEM) and N₂ adsorption-desorption techniques and their catalytic performance of the hydrodesulfurization (HDS) of dibenzothiophene (DBT) was evaluated. The effects of Co contents, Ni₂P contents and P/Ni molar ratios on the catalyst structure and HDS of DBT over the Co-Ni₂P/SBA-15 catalyst were investigated. The results indicated that the mesoporous structure was mainly maintained and the nickel phosphides were well dispersed in all of the characterized catalysts. The 4Co-25Ni₂P/SBA-15 (P/Ni=0.8) catalyst with the Co and Ni₂P contents of 4 wt% and 25 wt%, respectively, and the P/Ni molar ratio of 0.8 showed the highest catalytic performance for HDS of DBT. Under the reaction conditions of 380℃ and 3.0MPa, the DBT conversion can reach 99.62%. The HDS of DBT proceeded mainly via the direct desulfurization (DDS) pathway with biphenyl (BP) as the dominant product on all of the catalysts and the BP selectivity was slightly enhanced after the introduction of Co promoters.

Key words: Co, Ni₂P, dibenzothiophene, hydrodesulfurization, mesoporous, promoter

Zhou-jun Wang, Pingyi Wu, Ling Lan, Kunhong Liu, Yaqiong Hu, Shengfu Ji. Preparation, characterization and hydrodesulfurization performances of Co-Ni₂P/SBA-15 catalysts[J]. 能源化学(英文), 2015, 21(2): 185-192.

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Preparation, characterization and hydrodesulfurization performances of Co-Ni₂P/SBA-15 catalysts

Preparation, characterization and hydrodesulfurization performances of Co-Ni₂P/SBA-15 catalysts

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