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Direct amination of isobutylene over zeolite catalysts with various topologies and acidities
Gao, Shangyao1,2; Zhu, Xiangxue1; Li, Xiujie1; Wang, Yuzhong1; Xie, Sujuan1; Du, Songwei3; Chen, Fucun1; Zeng, Peng4; Liu, Shenglin1; Xu, Longya1
KeywordIsobutylene Amination Tert-butylamine Zeolite Catalysts Zsm-5
Source PublicationJOURNAL OF ENERGY CHEMISTRY
2017-07-01
DOI10.1016/j.jechem.2017.03.018
Volume26Issue:4Pages:776-782
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS KeywordTERT-BUTYLAMINE ; MOLECULAR-SIEVES ; ALKENES ; CRACKING ; SITES ; TRANSFORMATION ; HYDROCARBONS ; CONVERSION ; ISOBUTENE ; ALKYNES
AbstractThe atomically economic and green chemical reaction of direct amination of isobutylene to tertbutylamine, particularly under the relative mild reaction conditions available for future industrial use, was carried out over zeolite catalysts possessing different topological structures, from one dimensional to three dimensional pore system, and from small 8-member ring pore (MRP) to medium 10 MRP and further to large 12 MRP zeolites, to disclose the relationship between the zeolite properties/topologies and their amination performance systematically under the mild reaction conditions. It was discovered that the pore structure and the acidities of zeolite catalysts played crucial roles in the isobutylene amination process, and suitable pore diameter (larger than 0.5 nm or with large side pockets/cups in the outside surface) and a certain number of mid-strong acid sites are indispensable to catalyze the amination reaction, while too strong acid strength was not conducive to the process of isobutylene amination. Among them, zeolites with topologies of BEA, MFI, MEL, MWW and EUO exhibited good amination performance, with which the isobutylene conversion was higher than 12.61% (> 46.42% of the equilibrium conversion) under the studied mild reaction conditions. Due to the good amination performance and the large adjustable Si/Al-2 ratio range, ZSM-5 was selected to further study the effect of acidity on the amination performance systematically under the mild reaction conditions, and the activity-acidity relationship in the amination process was disclosed: the amination activity (isobutylene conversion) had a linear correlation with the amount of mid-strong B acidity under the studied conditions over ZSM-5 catalyst, which can provide guidance for further developing high-efficient amination catalyst under mild reaction conditions available for future industrial use. (C) 2017 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights reserved.
Language英语
WOS IDWOS:000412776100027
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150098
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.PetroChina Jinzhou Petrochem Co, Jinzhou 121001, Liaoning, Peoples R China
4.China Huanqiu Contracting & Engn Corp, Fushun 113006, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Gao, Shangyao,Zhu, Xiangxue,Li, Xiujie,et al. Direct amination of isobutylene over zeolite catalysts with various topologies and acidities[J]. JOURNAL OF ENERGY CHEMISTRY,2017,26(4):776-782.
APA Gao, Shangyao.,Zhu, Xiangxue.,Li, Xiujie.,Wang, Yuzhong.,Xie, Sujuan.,...&Xu, Longya.(2017).Direct amination of isobutylene over zeolite catalysts with various topologies and acidities.JOURNAL OF ENERGY CHEMISTRY,26(4),776-782.
MLA Gao, Shangyao,et al."Direct amination of isobutylene over zeolite catalysts with various topologies and acidities".JOURNAL OF ENERGY CHEMISTRY 26.4(2017):776-782.
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