金属载体结合方式对镍钨催化剂费托合成蜡加氢裂化性能的影响  

Effect of impregnation methods on nickel-tungsten catalysts and its performance on hydrocracking Fischer-Tropsch wax

作　　者：闫朋辉[1,2,3] 陶智超 郝坤 王煜丹[1,2,3] 杨勇[1,3,4] 李永旺[1,3,4] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001 [2]中国科学院大学,北京100049 [3]煤炭间接液化国家工程实验室,山西太原030001 [4]中科合成油技术有限公司,山西太原030001

出　　处：《燃料化学学报》2013年第6期691-697,共7页Journal of Fuel Chemistry and Technology

基　　金：国家高技术研究发展计划(863计划;2011AA05A205);国家重点基础研究发展规划(973计划;2011CB201401)

摘　　要：以Ni/W为加氢金属组分,HY/Al2O3为载体,采用浸渍法制备三种金属-载体不同结合方式的加氢裂化催化剂,研究了结合方式对催化剂酸性、加氢性能及FT合成蜡加氢裂化性能的影响。调整金属-载体的结合方式可明显调节催化剂加氢性能与裂解性能之间的平衡,Ni/W预先浸渍在HY分子筛上提高了催化剂的加氢性能,降低了载体的酸性。结果表明,高加氢性能-弱酸性的匹配有利于抑制F-T蜡的二次裂解,提高柴油选择性。而Ni/W均匀浸渍在HY/Al2O3载体上可获得相对均衡的加氢/裂解性能匹配,催化剂具有较高的反应活性及灵活的反应调控性。Three hydrocracking catalysts were prepared by impregnation method with different incorporation manners of Ni/W metals on HY/Al2O3 support.The effect of combination methods on acidity,hydrogenation capability of the catalysts and its hydrocracking performance on FT wax was studied.The balance between hydrogenation performance and cracking performance could be modulated by adjusting the metal-support combination methods.Ni/W pre-impregnated on HY can increase the hydrogenation capability of the catalyst and simultaneously lower the acidity of the support.The results show that the coordination of high hydrogenation capability and low acidity of catalyst can inhibit the formation of secondary cracking on some extent,and increase the selectivity of diesel.While Ni/W metals supported on HY/Al2O3 can achieve a relative balance of hydrogenation and cracking,thus the catalysts have a higher activity and the more flexible ability to modulate reaction.

关 键 词：加氢裂化 催化剂 费托合成蜡 柴油 选择性 

分 类 号：O643[理学—物理化学]