英文论文
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文献类型
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Journal article (JA)
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题名
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Lead-containing Beta zeolites as versatile Lewis acid catalysts for the aminolysis of epoxides
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作者
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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)
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作者单位
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(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
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通讯作者地址
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Email
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ResearchID
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ORCID
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期刊名称
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Microporous and Mesoporous Materials
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出版社
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Elsevier B.V.
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ISSN
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1387-1811
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出版信息
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2018-07-01, 264:230-239.
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JCR
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2
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影响因子
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4.182
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ISBN
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基金
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会议名称
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会议地点
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会议开始日期
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会议结束日期
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关键词
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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
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摘要
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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.
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一级学科
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WOS入藏号
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EI收录号
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20180604767774
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DOI
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10.1016/j.micromeso.2018.01.033
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ESI
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MATERIALS
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收录于
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EI
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