CAS OpenIR
Improvement of product distribution through enhanced mass transfer in isobutane/butene alkylation
Zhao, Yu1,2; Li, Tao1; Meng, Xiangzhan3; Wang, Hongyan2; Zhang, Yongqiang2,3; Wang, Hui2; Zhang, Suojiang2
2019-03-01
Source PublicationCHEMICAL ENGINEERING RESEARCH & DESIGN
ISSN0263-8762
Volume143Pages:190-200
AbstractThe isobutane/butene alkylation catalyzed by H2SO4 is a liquid/liquid reaction, and the limited solubility of the hydrocarbon in the catalyst inhibits mass transfer, leading to occurrence of side reactions. Amphiphilic surfactant could enhance mass transfer in multiphasic systems. In this study, a series of quaternary ammonium and phosphonium surfactants were used as the additive to enhance the catalytic performance of H2SO4 for isobutane/butene alkylation. Ammonium surfactants showed much better activity to improve product distribution than the phosphonium one. The enhanced product distribution and alkylate quality were attributed to the well dispersion of the hydrocarbon in the acid and increased hydrocarbon solubility in the catalytic system, i.e., enhanced mass transfer in the reaction system. The reaction parameters were optimized, and under these conditions, weight percentage of C8 in the product was 87.5%, and research octane number (RON) of the alkylate could reach 97.8. Lifetime of the surfactant/H2SO4 system was 130 times compared with 51 times for the system with no additive due to inhibition of the formation of acid soluble oil (i.e., products of side reactions). This proposed catalytic system with the ammonium surfactant as the additive is promising to be employed in industrial C4 alkylation process. (C) 2019 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
KeywordC4 alkylation Ionic surfactant Product distribution Enhanced mass transfer
DOI10.1016/j.cherd.2018.12.014
Language英语
WOS KeywordSULFURIC-ACID ; 2-BUTENE ; OLEFINS ; CATALYST ; INHIBITION ; VARIABLES ; CORROSION ; QUALITY ; SALTS
Funding ProjectNational Basic Research Program of China (973 Program)[2015CB251401] ; National Natural Science Foundation of China[21603232] ; National Natural Science Foundation of China[21676270] ; CAS ; CAS/SAFEA International Partnership Program for Creative Research Teams[20140491518]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Basic Research Program of China (973 Program) ; National Natural Science Foundation of China ; CAS ; CAS/SAFEA International Partnership Program for Creative Research Teams
WOS IDWOS:000461269100018
PublisherINST CHEMICAL ENGINEERS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28320
Collection中国科学院过程工程研究所
Corresponding AuthorWang, Hui; Zhang, Suojiang
Affiliation1.Zhengzhou Univ, Sch Chem Engn & Energy, Zhengzhou 450001, Henan, Peoples R China
2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst Inst Proc E, CAS Key Lab Green Proc Engn, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yu,Li, Tao,Meng, Xiangzhan,et al. Improvement of product distribution through enhanced mass transfer in isobutane/butene alkylation[J]. CHEMICAL ENGINEERING RESEARCH & DESIGN,2019,143:190-200.
APA Zhao, Yu.,Li, Tao.,Meng, Xiangzhan.,Wang, Hongyan.,Zhang, Yongqiang.,...&Zhang, Suojiang.(2019).Improvement of product distribution through enhanced mass transfer in isobutane/butene alkylation.CHEMICAL ENGINEERING RESEARCH & DESIGN,143,190-200.
MLA Zhao, Yu,et al."Improvement of product distribution through enhanced mass transfer in isobutane/butene alkylation".CHEMICAL ENGINEERING RESEARCH & DESIGN 143(2019):190-200.
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