燃料化学学报2016，Vol.44Issue(11)：1326-1333,8.
F助剂对NiWF/γ-Al2 O3催化煤焦油加氢脱氮脱硫的影响
Effect of fluoride promoter on the catalytic activity of NiWF/γ-Al2 O3 for hydrodenitrogenation and hydrodesulfurization of coal tar
摘要
Abstract
A series of NiWF(x)/γ-Al2O3 catalysts were prepared by adding different amounts of ammonium fluoride, and the effects of fluoride amount on the structure and physicochemical properties were investigated with X-ray diffraction, X-ray photoelectron spectroscopy, NH3-TPD and high resolution transmission electron mcroscopy( HRTEM) techniques and N2 sorption experiment. Their hydrodenitrogenation (HDN) and hydrodesulfurization (HDS) catalytic performances were evaluated in a fix-bed reactor with low and middle-temperature coal tar obtained from Inner Mongolia as feedstock. Although fluoride amount has little effect on the pore diameter and pore volume of the catalysts, increase of the fluoride amount decreases the specific surface area. In addition, the sulfidation degree of the catalyst decreases with the fluoride amount when it is sulfided at 643 K for 6 h. Also, the numbers of strong acid sites and total amount acid sites change with increasing fluoride amount. They slightly increase at first, but then obviously decrease. HRTEM shows that WS2 slabs have a typical layered structure. The catalytic activity of NiWF(x)/γ-Al2 O3 for HDN and HDS of coal tar shows a volcanic trend with the fluoride amount.关键词
加氢脱硫/加氢脱氮/F/NiW/γ-Al2O3/煤焦油Key words
hydrodesulfurization/hydrodenitrogenation/fluoride/NiWF/γ-Al2O3/coal tar分类
化学化工引用本文复制引用
郭兴梅,宋毛宁,赵旭,赵亮富..F助剂对NiWF/γ-Al2 O3催化煤焦油加氢脱氮脱硫的影响[J].燃料化学学报,2016,44(11):1326-1333,8.基金项目
The project was supported by the Strategic Science and Technology Project of Chinese Academy of Sciences ( XDA07020200) and the Development of Gasification Coal Tar Hydrogenation Furnace of Luqi (CFBYKJ-JSFW-01-2014).中国科学院战略性先导科技专项(XDA07020200)和鲁奇炉气化煤焦油加氢技术开发(CFBYKJ-JSFW-01-2014)项目资助本文的英文电子版由Elsevier出版社在ScienceDirect上出版(http://www. sciencedirect. com/science/journal/18725813) （ XDA07020200）
