Articles


Document Type
Journal article (JA)
Title
Lead-containing Beta zeolites as versatile Lewis acid catalysts for the aminolysis of epoxides
Author
Chai, Yuchao(1,2); Xie, Linjun(1,2); Yu, Zhiyang(3); Dai, Weili(1,2); Wu, Guangjun(1,2); Guan, Naijia(1,2); Li, Landong(1,2)
Address
(1) School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin; 300350, China; (2) Key Laboratory of Advanced Energy Materials Chemistry of Ministry of Education, Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin; 300071, China; (3) School of Materials Science and Engineering, Xiamen University of Technology, Xiamen; 361024, China
RPAddress
Email
ResearchID
ORCID
Journal
Microporous and Mesoporous Materials
Publisher
Elsevier B.V.
ISSN
1387-1811
Published
2018-07-01, 264:230-239.
JCR
2
ImpactFactor
3.615
ISBN
Fund_Code
HYMC
HYDD
HYKSRQ
HYJSRQ
HYLWLB
HYJB
Keywords
Amination - Catalyst activity - High resolution transmission electron microscopy - Lead - Magic angle spinning - Nuclear magnetic resonance - Nuclear magnetic resonance spectroscopy - Scanning electron microscopy - Temperature programmed desorption - Tran?Aminolysis - Aminolysis of epo
Abstract
Pb-Beta, a heteroatom zeolite containing out-size atoms of lead, has been successfully prepared via a scalable post-synthesis strategy composed of dealumination of H-Beta to create associated silanol and subsequent dry impregnation of the resulting Si-Beta with lead nitrate. The incorporated lead species exist in the form of well-isolated tetra-coordinated Pb2+ions with open configurations, as revealed by the characterization results from high angle annular dark filed scanning transmission electron microscopy (HAADF-STEM), UV-Vis, X-ray photoelectron spectroscopy (XPS) and29Si solid-state magic angle spinning nuclear magnetic resonance (MAS NMR) spectroscopy. Sufficient Lewis acid sites with moderate acid strength are created by lead incorporation into zeolite framework, as confirmed by the temperature-programmed desorption of ammonia (NH3-TPD). The as-prepared Pb-Beta Lewis acid zeolites exhibit remarkable catalytic activity in the ring-opening aminolysis of epoxides to β-amino alcohols with high regio-selectivity. The presence of wide-open lead sites can promote the simultaneous activation of epoxide and amine substrates and, therefore, catalyze the aminolysis of epoxides with strong basic amines, e.g. butylamine. ? 2018 Elsevier Inc.
WOS Categories
Accession Number
EI收录号
20180604767774
DOI
10.1016/j.micromeso.2018.01.033
ESI_Type
MATERIALS
Collection
EI

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