硫代硫酸铵预硫化的Mo/AC催化剂加氢脱硫性能的研究  

Hydrodesulfurization of thiophene over Mo/AC catalyst presulfided by ammonium thiosulfate

作　　者：王腾飞[1,2] 张晔[1] 葛晖[1] 唐明兴[1] 周立公[1] 吕占军[1] 李学宽[1] 

机构地区：[1]中国科学院山西煤炭化学研究所,山西太原030001 [2]中国科学院大学,北京100049

出　　处：《燃料化学学报》2015年第2期202-207,共6页Journal of Fuel Chemistry and Technology

基　　金：国家自然科学基金(21473231);中国科学院战略先导专项(XDA07020400)

摘　　要：采用等体积浸渍法将硫代硫酸铵(ATS)负载在Mo/AC催化剂上,制备了器外预硫化的Mo/AC-ATS催化剂;以噻吩加氢脱硫(HDS)为探针反应,考察了活化温度和活化时间对预硫化催化剂加氢脱硫活性的影响。研究发现,300℃下活化0.5 h所得到的预硫化催化剂具有最好的加氢脱硫活性。与传统硫化剂CS2和DMDS硫化的催化剂相比,采用Mo/AC-ATS催化剂,在最佳活化条件下,噻吩转化率分别提高了34%和42%。XPS、TPR-MS和TEM等表征结果显示,预硫化的Mo/ACATS催化剂中M o4+含量较高,这是其具有较高加氢脱硫活性的主要原因。Through the impregnation of Mo/AC catalyst with an aqueous solution of ammonium thiosulfate（ ATS）,the ex-situ presulfided Mo /AC-ATS catalyst was prepared; the influence of activation temperature and time on the catalytic performance in the hydrodesulfurization（ HDS） of thiophene as a probe reaction was investigated.The result indicated that under the optimized activation conditions,viz.,300 ℃ and 0.5 h,the conversions of thiophene over the presulfided Mo/AC-ATS catalyst are 34% and 42% higher than those obtained over the Mo/AC catalysts sulfided with traditional DMDS and CS2 sulfiding agents,respectively.The XPS,TPR-MS and TEMresults demonstrated that the presulfided Mo/AC-ATS has a high content of Mo4 ＋,which may contribute to its high activity in HDS.

关 键 词：硫代硫酸铵 预硫化 硫化剂 加氢脱硫 活性炭 噻吩 

分 类 号：TQ426.95[化学工程]