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以正硅酸乙酯为硅源,以钼酸铵和磷酸二氢铵为钼源和磷源,采用溶胶-凝胶法,经干燥、焙烧处理后,程序升温还原制备得到二氧化硅负载磷化钼(MoP)催化剂,并以二苯并噻吩为模型化合物,对催化剂的加氢脱硫活性进行初步评价,考察了负载量、反应压力、反应温度等因素对催化活性的影响。结果表明,溶胶-凝胶法制备负载催化剂最佳磷化钼负载量为20%(质量分数);升高反应压力和温度均有利于提高二苯并噻吩的转化率,但降低了产物中联苯的含量。
Ethyl orthosilicate as silicon source, ammonium molybdate and ammonium dihydrogen phosphate as molybdenum source and phosphorus source, using sol-gel method, after drying and calcination, the procedure was temperature reduction and preparation to obtain a silica-supported phosphorus Molybdenum (MoP) catalyst. The dibasic thiophene was used as a model compound to evaluate the hydrodesulfurization activity of the catalyst. The effects of loading, reaction pressure and reaction temperature on the catalytic activity were investigated. The results showed that the optimal loading of molybdenum sulfide prepared by sol-gel process was 20% (mass fraction). Increasing the reaction pressure and temperature all contributed to increasing the conversion of dibenzothiophene, however, Benzene content.