Efficient one pot synthesis of mesoporous NiMo-Al₂O₃ catalysts for dibenzothiophene hydrodesulfurization

详细信息    查看全文

• 作者：Weikun Lai ; Liqing Pang ; Jinbao Zheng ; Juanjuan Li ; Zhongfang Wu ; Xiaodong Yi ; ^{xdyi@xmu.edu.cn} ; Weiping Fang ; ^{wpfang@xmu.edu.cn} ; Lishan Jia
• 关键词：One pot synthesis ; NiMo&ndash ; Al2O3 catalyst ; Hydrodesulfurization ; Dibenzothiophene
• 刊名：Fuel Processing Technology
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：110
• 期：Complete
• 页码：8-16
• 全文大小：1673 K

文摘

With the aim of disposing hazardous sulphur-containing chemicals, an experimental investigation on the hydrodesulfurization (HDS) of the model compound dibenzothiophene (DBT) is presented. Mesoporous NiMo-Al₂O₃ catalysts for HDS were prepared by efficient and simple one-pot synthesis method using aluminum chloride as start material, urea as precipitant and starch as template. The catalysts were characterized by means of N₂ physisorption, XRD, SEM, TPR, XPS and HRTEM. The characterization results show that, compared with the NiMo/Al₂O₃ catalysts prepared by impregnation method, the as-prepared NiMo-Al₂O₃ catalysts exhibit smaller nano-sized spherical particles of alumina, higher dispersions of Ni and Mo species, shorter length and lower stacking layer number of MoS₂ slabs. Thus, NiMo-Al₂O₃ catalysts possess higher catalytic performance in the HDS of DBT than those of impregnated catalysts. Therefore, one pot synthesis is a promising method for the development of hydrotreating catalysts.