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个人信息Personal Information
教授
博士生导师
硕士生导师
任职 : 大连理工大学成都研究院院长
性别：男
毕业院校：中科院大连化学物理研究所
学位：博士
所在单位：化工学院
学科：化学工艺. 物理化学. 功能材料化学与化工
办公地点：大连理工大学西部校区化工综合楼A401室
联系方式：辽宁省大连市高新区凌工路2号，邮编116024
电子邮箱：changhai@dlut.edu.cn
Nickel silicides prepared from organometallic polymer as efficient catalyst towards hydrogenation of phenylacetylene
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论文类型：期刊论文
发表时间：2015-05-15
发表刊物：11th International Symposium on the Scientific Bases for the Preparation of Heterogeneous Catalysts (PREPA 11)
收录刊物：SCIE、EI、CPCI-S、Scopus
卷号：246
页面范围：176-183
ISSN号：0920-5861
关键字：Temperature programmed pyrolysis; Nickel silicides; Phenylacetylene hydrogenation; Alkali treatment
摘要：A single-phase Ni2Si nanoparticle catalyst was prepared successfully by using temperature programmed pyrolysis method with polydimethylsilane-Ni(acac)(2) as precursor and was characterized by thermogravimetric analysis, X-ray diffraction, X-ray photoelectron emission microscopy, energy dispersive X-ray spectroscopy, and transmission electron microscopy. The pyrolysis temperature for generating pure Ni2Si in H-2/Ar mixture is significantly lower than that for treatment in Ar. Ni2Si nanoparticles would be reduced to Ni nanoparticles by H-2 with increasing pyrolysis temperature (>600 C). The catalytic hydrogenation of phenylacetylene on Ni2Si nanoparticles was investigated at 1.0 MPa hydrogen and 80 C. The catalysts show suitable conversion of phenylacetylene and notable selectivity to styrene with 90%. In addition, catalytic performance on Ni2Si prominently improves after removing the 5i02 layer around Ni2Si nanoparticles by alkali treatment. (C) 2014 Elsevier B.V. All rights reserved.