Promoting di-isobutene selectivity over ZnO/ZrO_(2)-SO_(4) in isobutene oligomerization

作     者：Jiyuan Li Mifen Cui Zhuxiu Zhang Xian Chen Qing Liu Zhaoyang Fei Jihai Tang Xu Qiao Jiyuan Li;Mifen Cui;Zhuxiu Zhang;Xian Chen;Qing Liu;Zhaoyang Fei;Jihai Tang;Xu Qiao

作者机构：State Key Laboratory of Materials-Oriented Chemical EngineeringCollege of Chemical EngineeringNanjing Tech UniversityNanjing 210009China Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing 210009China 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2021年第34卷第10期

页      面：165-171页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：supported by the National Natural Science Foundation of China(21676141,21808104) the National Key Research and Development Program of China(2017YFB0307304) the Natural Science Foundation of Jiangsu Province(BK20170989) the Natural Science Foundation of Jiangsu Higher Education Institutions of China(17KJB530005) the Project"333"of Jiangsu Province(BRA2016418) the Six Major Talent Peak Project of Jiangsu Province(XCL-017) 

主　　题：Sulfated zirconia Zinc oxide Isobutene Selectivity Chemical reaction Catalysis 

摘      要：Isooctane attracts great interest in recent years because of its promising potential as friendlyenvironmental gasoline,which is obtained by dimerization of isobutene with a hydrogenation ***,a solid acid catalyst sulfated zirconia modified by ZnO was *** oligomerization of isobutene had been investigated over ZrO_(2)-SO_(4) and ZnO(X)/ZrO_(2)-SO_(4) catalyst in order to find efficient catalysts for the production of isobutene *** presence of ZnO obviously enhanced the dimerization of isobutene and ZnO(X)/ZrO_(2)-SO_(4) exhibited the highest di-isobutene yield of 60%.Kinetic studies showed the higher trimerization-to-dimerization activation energy ratios of ZnO(X)/ZrO_(2)-SO_(4) than those of ZrO_(2)-SO_(4) from 353 to 393 *** addition,reaction rate of dimerization was higher than trimerization over ZnO(X)/ZrO_(2)-SO_(4).The high L/B ratio manifested the capability to enhance the selectivity of C8 in isobutene ***,ZnO(X)/ZrO_(2)-SO_(4) exhibited stable conversion for the dimerization of isobutene.