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华中师范大学学报(自然科学版)  2017, Vol. 51 Issue (6): 786-790    
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免焙烧制备WP/SiO2加氢脱硫催化剂
朱对虎 1, 遇治权2, 王 伟1, 黄瑞民1, 王安杰2
1.银川能源学院 石油化工学院, 银川 750105; 2.辽宁省高校石油化工技术与装备重点实验室, 辽宁 大连 116024
Preparation of WP/SiO2 hydrodesulfurization catalyst by a non-calcination method
ZHU Duihu1, YU Zhiquan2, WANG Wei1, HUANG Ruimin1, WANG Anjie2
1.Yinchuan Institute of Energy, Institute of Petrochemical Technology, Yinchuan 750105, China;2.Liaoning Key Laboratory of Petrochemical Technology and Equipment, Dalian,Liaoning 116024, China
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摘要 采用等体积浸渍法制备焙烧和免焙烧的催化剂前驱体,用H2程序升温还原法制备焙烧和免焙烧的WP/SiO2催化剂.对制备的催化剂进行XRD和N2物理吸附表征,并用质量分数为0.8%的二苯并噻吩/十氢萘溶液来考察催化剂的加氢脱硫反应活性.与焙烧的WP/SiO2(C-WP/SiO2)催化剂相比,NC-WP/SiO2具有较大的比表面积和孔容;反应后,两种催化剂的比表面积和孔容均降低.在NC-WP/SiO2上,DBT的转化率略低于C-WP/SiO2,但均随着温度的增加而升高;随着温度的升高,两种催化剂加氢中间体的选择性降低,直接脱硫产物BP的选择性升高,说明增加温度有助于含硫化合物的脱硫.340℃,C-WP/SiO2催化DBT的反应速率(0.33 mol·g-1·min-1)略高于NC-WP/SiO2(0.28 mol·g-1·min-1);在NC-WP/SiO2上,DBT主要以DDS路径脱硫,而在C-WP/SiO2上,加氢活性较高.
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朱对虎
遇治权
王 伟
黄瑞民
王安杰
关键词 磷化钨 加氢脱硫(HDS) 二苯并噻吩 免焙烧    
Abstract:Calcinated and non-calcinated WP/SiO2 precursors were prepared by an incipient impregnation method, followed by H2 temperature-programmed reduction (H2-TPR) method. The morphologies of the catalysts were characterized by XRD and N2 physical adsorption, and the HDS performances were studied with a model fuel containing 0.8% (mass fraction) dibenzothiophene (DBT) in decalin. Compared with the calcinated WP/SiO2 (C-WP/SiO2), NC-WP/SiO2 possessed larger specific surface area and pore volume. After HDS of DBT, the specific surface area and pore volume of both catalysts decreased. Over NC-WP/SiO2, the conversion of DBT was slightly lower than that over C-WP/SiO2. Over these two catalysts, the conversion of DBT increased with elevated temperature. Besides, as the reaction temperature increased, the selectivity of BP increased, while that of the hydrogenation intermediate decreased. It could be concluded that high temperature enhanced the HDS performance of the catalysts. At 340℃, C-WP/SiO2 (0.33 mol·g-1·min-1) showed higher k than that over NC-WP/SiO2 (0.28 mol·g-1·min-1). Over NC-WP/SiO2, HDS of DBT mainly occurred through DDS pathway. On the other hand, the hydrogenation performance was much higher over C-WP/SiO2.
Key wordstungsten phosphide    hydrodesulfurization    DBT    non-calcination
收稿日期: 2017-12-13     
引用本文:   
朱对虎,遇治权,王 伟,黄瑞民,王安杰. 免焙烧制备WP/SiO2加氢脱硫催化剂[J]. 华中师范大学学报(自然科学版), 2017, 51(6): 786-790.
ZHU Duihu,YU Zhiquan,WANG Wei,HUANG Ruimin,WANG Anjie. Preparation of WP/SiO2 hydrodesulfurization catalyst by a non-calcination method. journal1, 2017, 51(6): 786-790.
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