Effect of metal content on the activity and product selectivity of n-decane hydroisomerization over Ni-Pd/HY zeolite

作     者：Dhanapalan Karthikeyan Raji Atchudan Raji Sivakumar Dhanapalan Karthikeyan;Raji Atchudan;Raji Sivakumar

作者机构：ArignarAnna艺术与科学学院化学系 安那大学化学系(库因地校区) 岭南大学化学工程学院 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2016年第37卷第11期

页      面：1907-1917页

核心收录：

学科分类：081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

基　　金：The authors are gratefully acknowledged for the catalyst characterization and product analysis support from Chennai Petroleum Corporation Limited (CPCL)  Chennai  India 

主　　题：Hydroisomerization n-Decane Zeolite Y Palladium Impregnation method 

摘      要：Metal-loaded zeolite catalysts were synthesized and examined in the hydroisomerization of ***,zeolite Y was impregnated with 0.1 wt%Pd and varying amounts of Ni（0.1-0.5 wt%].The crystallinity of the metal-loaded catalysts was characterized by X-ray diffraction,and the average metal particle size was determined by transmission electron *** states of Pd and Ni were identified by X-ray photoelectron *** temperature-programmed desorption analysis revealed the occurrence of ion-exchange of some of the catalyst acid sites with Ni-（2＋）.The reducibility of the HY zeolite-supported Pd,Ni,and Pd-Ni catalysts was studied by temperature-programmed *** hydroisomerization of n-decane over the prepared catalyst was conducted at 200-450℃ under 1 *** addition of up to 0.3 wt%over 0.1 wt%Pd/HY enhanced the n-decane conversion and isomerization product *** improved selectivity of the mono- and dibranched isomers suggested the occurrence of a protonated cyclopropane intermediate ***,further Ni addition above 0.3 wt%considerably reduced the activity and isomerization *** bimetallic catalysts were more selective toward the formation of dibranched isomers,i.e.,those containing a higher octane number.