高等学校化学学报2016，Vol.37Issue(8)：1528-1534,7.DOI:10.7503/cjcu20150923
钇和柠檬酸对非负载磷化镍催化剂加氢脱硫性能的影响
Effect of Yttrium and Citric Acid on the Hydrodesulfurization Performance of Unsupported Nickel Phosphide
摘要
Abstract
The Yttrium ( Y ) , citric acid ( CA ) and combined Y and CA modified bulk nickel phosphide ( Ni-P) catalysts were prepared by temperature programmed reduction ( TPR ) method. The catalysts were characterized by means of X-ray diffraction( XRD) , N2-adsorption specific surface area measurements( BET) , CO chemisorption uptake measurements, X-ray photoelectron spectroscopy ( XPS ) and transmission electron microscopy(TEM). The effects of Y and CA on catalyst activity for dibenzothiophene(DBT) hydrodesulfuriza-tion(HDS) were studied. The results indicated that both Y and CA can promote the transformation from NixPy Oz amorphous phase to nickel phosphide active phase, suppress the formation of Ni5 P4 phase and therefore promote the formation of Ni2 P active phase. Addition of Y or CA can increase the surface area and suppress the enrichment of phosphorus on surface, leading to a smaller and highly dispersed active phase particles. The Y, CA and combined Y and CA modified nickel phosphide catalysts were proved to possess higher HDS activi-ty than Ni-P sample. The DBT conversions of catalysts followed the order: Y-Ni-P-CA>Ni-P-CA>Y-Ni-P>Ni-P. At the conditions of 340℃, 3. 0 MPa, WHSV of 1. 5 h-1 and H2/oil volume ratio of 700, the DBT con-version of the Y-Ni-P-CA catalyst reached 97%, which is an increase of 35% when compared with that found for bulk Ni-P sample.关键词
加氢脱硫/磷化镍/钇/柠檬酸/二苯并噻吩Key words
Hydrodesulfurization/Nickel phosphide/Yttrium/Citric acid/Dibenzothiophene分类
化学化工引用本文复制引用
宋华,于祺,徐晓伟,宋华林,姜楠,李锋,陈彦广..钇和柠檬酸对非负载磷化镍催化剂加氢脱硫性能的影响[J].高等学校化学学报,2016,37(8):1528-1534,7.基金项目
国家自然科学基金(批准号:21276048)、黑龙江省教育厅面上项目(批准号:12541060)和东北石油大学研究生创新科研项目(批准号:YJSCX2016-019NEPU)资助.? Supported by the National Natural Science Foundation of China ( No.21276048), the Project of Education Department of Heilongjiang Province, China(No.12541060) and the Graduate Innovation Project of Northeast Petroleum University, China(No. YJSCX2016-019NEPU) （批准号:21276048）
