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Alkylation of isobutane/butene promoted by fluoride-containing ionic liquids
Zhang, Honghua1,2; Liu, Ruixia2; Yang, Zhiqiang2; Huo, Feng2; Zhang, Ruirui2; Li, Zihang2; Zhang, Suojiang2; Wang, Yanji1
Source PublicationFUEL

In this work, the alkylation of isobutane and butene, catalyzed by sulfuric acid in the presence of the fluoride-containing ionic liquids [Bmim][PF6] and [Bmim][SbF6], was investigated. The use of the binary mixture catalysts brought to a higher C-8 selectivity and longer catalyst lifetime, compared with the results obtained when working with sulfuric acid only. This was attributed to the formation of new species when [Bmim][PF6] or [Bmim][SbF6] are added to sulfuric acid. The acidolysis of [Bmim][PF6] and [Bmim][SbF6] was accompanied by the release of hydrogen fluoride (HF) and the decomposition of anions to [PF6-x-2y(HSO4)(x)(SO4)(y)](-) and [SbF6-x-2y(HSO4)(x)(SO4)(y)](-), respectively. The presence of these new species after acidolysis was measured and confirmed by ion chromatography, H-1-Nuclear Magnetic Resonance (NMR), F-19-NMR and P-31-NMR. The production of HF and the complexation of anions and carbenium ions both play an important role in stabilizing the carbenium ion and improving the catalytic performance.

KeywordFluoride-containing Ionic Liquids Sulfuric Acid Isobutane/butene Alkylation Acidolysis Binary Mixtures
WOS HeadingsScience & Technology ; Technology
Indexed BySCI
WOS KeywordAcid-catalyzed Alkylation ; Sulfuric-acid ; Trifluoromethanesulfonic Acid ; Isobutylene Alkylation ; Olefins ; Butene ; Mechanism ; 1-butene ; H2so4
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China Petroleum & Chemical Corporation(U1662129) ; CAS ; National Natural Science Foundation of China(91434203) ; CAS(QYZDY-SSW-JSC0 11) ; State Key Laboratory of Multiphase Complex Systems, IPE, CAS(MPCS-2015-A-05)
WOS IDWOS:000413449600026
Citation statistics
Document Type期刊论文
Affiliation1.Hebei Univ Technol, Sch Chem Engn, Tianjin 300130, Peoples R China
2.Chinese Acad Sci, Beijing Key Lab Ion Liquids Clean Proc, Key Lab Green Proc & Engn, State Key Lab Multiphase Complex Syst,Inst Proc E, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Honghua,Liu, Ruixia,Yang, Zhiqiang,et al. Alkylation of isobutane/butene promoted by fluoride-containing ionic liquids[J]. FUEL,2018,211:233-240.
APA Zhang, Honghua.,Liu, Ruixia.,Yang, Zhiqiang.,Huo, Feng.,Zhang, Ruirui.,...&Wang, Yanji.(2018).Alkylation of isobutane/butene promoted by fluoride-containing ionic liquids.FUEL,211,233-240.
MLA Zhang, Honghua,et al."Alkylation of isobutane/butene promoted by fluoride-containing ionic liquids".FUEL 211(2018):233-240.
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