钛改性AlPO_4-5/Al_2O_3复合载体催化剂的制备及加氢脱硫与芳烃饱和性能评价

PREPARATION OF TITANIUM MODIFIED AIPO_4-5/Al_2O_3 COMPOSITE CATALYST AND EVALUATION OF ITS HDS AND AROMATIC HYDROGENATION PERFORMANCE

以偏钛酸形式将TiO_2引入到AlPO_4-5/Al_2O_3复合载体中,以W-Ni为活性金属制备了不同TiO_2含量的复合载体催化剂。分别以二苯并噻吩、四氢萘为模型化合物,在微反装置上对催化剂加氢脱硫与芳烃加氢饱和性能进行评价。结果表明,在反应压力4.0 MPa、氢油体积比500:1的条件下,TiO_2质量分数为15.0%时,所制备催化剂的加氢脱硫活性和转化四氢萘的活性均最高。

TiO2 was incorporated into AIPO4-5/Al2O3 support by adding meta-titanic acid. A series of eatal various ysts was prepared using W-Ni active component and Ti-AIPO4-5/Al2O3 composite supports with TiO2 contents. The catalytic performance （HDS and aromatics saturation） of these catalyst sam pies were evaluated on a micro-reactor and using dibenzothiophene and tetralin as model compounds respectively. Results showed that as comparing the effect of TiO2contents, under a reaction pressure of 4.0 MPa, a H2/oil volume ratio of 500 and a certain reaction temperature, the catalyst having a TiO2 content of 15.0% exhibited the best HDS activity and the highest conversion of tetralin.