华中师范大学学报（自然科学版）2017，Vol.51Issue(6)：786-790,5.DOI:10.19603/j.cnki.1000-1190.2017.06.011
免焙烧制备WP/SiO2加氢脱硫催化剂
Preparation of WP/SiO2 hydrodesulfurization catalyst by a non-calcination method
摘要
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.关键词
磷化钨/加氢脱硫(HDS)/二苯并噻吩/免焙烧Key words
tungsten phosphide/hydrodesulfurization/DBT/non-calcination分类
化学化工引用本文复制引用
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):786-790,5.基金项目
宁夏高校科研专项基金资助项目(NGY2017246) （NGY2017246）
银川能源学院重点项目(2016-KY-Z-11). （2016-KY-Z-11）
