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Adamantane-Based Cation and [MFn](-) Anion Synergistically Enhanced Catalytic Performance of Sulfuric Acid for Isobutane Alkylation
Wang, Liuyang1,2; Zhao, Guoying2; Yao, Xiaoqian2; Ren, Baozeng1; Zhang, Suojiang2
2017-07-19
发表期刊INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
卷号56期号:28页码:7920-7929
摘要

A series of adamantane-based ionic liquids (ADM-ILs) with [MFn](-) anions were synthesized as cocatalysts for the alkylation of isobutane and butene. By systematically tuning the structures of the cation and anion and their combination, we obtained the optimized ionic liquid, ADM-C-12-SbF6, which exhibited significant enhancements in the C-8 selectivities [especially to trimethylpentanes (TMPs)], the research octane number (RON) of the alkylate products, and the lifetime of sulfuric acid. The selectivity to TMPs was improved from 81.9% to 84.5%, and the alkylate RON was improved from 96.6 to 98.6 upon the addition of the ADM-ILs. In addition, the lifetimes of the ADM-IL/H2SO4 systems were increased to twice that of H2SO4 alone. Based on experimental measurements and DFT calculations, all of these enhancements were attributed to the multifunctions cooperatively integrated into the task-specific ADM-ILs, such as surfactant action, improving the interfacial properties of the acid/hydrocarbon biphases; buffer action, stabilizing the acidity changes during the reaction process; and hydride donor action, increasing the H- transfer rate, which promoted the production of TMPs. This study is beneficial for improving the isobutane alkylation process catalyzed by concentrated sulfuric acid.

文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1021/acs.iecr.7b01192
收录类别SCI
语种英语
关键词[WOS]Ionic Liquids ; Aluminum-chloride ; Chain-length ; C-13 Nmr ; Dispersions ; Solubility ; Additives ; Heptane
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China(51374193 ; 21676278)
WOS记录号WOS:000406172800005
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22983
专题多相复杂系统国家重点实验室
作者单位1.Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing Key Lab Ion Liquids Clean Proc,State Key, Beijing 100190, Peoples R China
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Wang, Liuyang,Zhao, Guoying,Yao, Xiaoqian,et al. Adamantane-Based Cation and [MFn](-) Anion Synergistically Enhanced Catalytic Performance of Sulfuric Acid for Isobutane Alkylation[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2017,56(28):7920-7929.
APA Wang, Liuyang,Zhao, Guoying,Yao, Xiaoqian,Ren, Baozeng,&Zhang, Suojiang.(2017).Adamantane-Based Cation and [MFn](-) Anion Synergistically Enhanced Catalytic Performance of Sulfuric Acid for Isobutane Alkylation.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,56(28),7920-7929.
MLA Wang, Liuyang,et al."Adamantane-Based Cation and [MFn](-) Anion Synergistically Enhanced Catalytic Performance of Sulfuric Acid for Isobutane Alkylation".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 56.28(2017):7920-7929.
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