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题名:
Adamantane-Based Cation and [MFn](-) Anion Synergistically Enhanced Catalytic Performance of Sulfuric Acid for Isobutane Alkylation
作者: Wang, Liuyang1,2; Zhao, Guoying2; Yao, Xiaoqian2; Ren, Baozeng1; Zhang, Suojiang2
刊名: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期: 2017-07-19
卷号: 56, 期号:28, 页码:7920-7929
收录类别: SCI
WOS记录号: WOS:000406172800005
DOI: 10.1021/acs.iecr.7b01192
文章类型: Article
英文摘要: 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.
WOS标题词: Science & Technology ; Technology
类目[WOS]: Engineering, Chemical
研究领域[WOS]: Engineering
关键词[WOS]: IONIC LIQUIDS ; ALUMINUM-CHLORIDE ; CHAIN-LENGTH ; C-13 NMR ; DISPERSIONS ; SOLUBILITY ; ADDITIVES ; HEPTANE
项目资助者: National Natural Science Foundation of China(51374193 ; 21676278)
语种: 英语
ISSN号: 0888-5885
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ipe.ac.cn/handle/122111/22983
Appears in Collections:多相复杂系统国家重点实验室_期刊论文

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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

Recommended Citation:
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.
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