| 核壳结构CuO-Bi_2O_3@meso-SiO_2催化剂的制备及甲醛乙炔化性能 |
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| 引用本文： | 马志强,张洪喜,李海涛,武瑞芳,王俊俊,郭江渊,王志鹏,赵永祥.核壳结构CuO-Bi_2O_3@meso-SiO_2催化剂的制备及甲醛乙炔化性能[J].工业催化,2015,23(5):344-348. |
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| 作者姓名： | 马志强 张洪喜 李海涛 武瑞芳 王俊俊 郭江渊 王志鹏 赵永祥 |
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| 作者单位： | 山西大学化学化工学院 精细化学品教育部工程研究中心，山西 太原 030006 |
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| 基金项目： | 国家国际科技合作资助项目(2013DFA40460)；山西省科技攻关计划(20140321013-02)；高等学校博士学科点专项科研基金资助项目 |
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| 摘 要： | 为了提高铜铋炔化催化剂的稳定性、抑制活性组分流失造成的活性下降和延长催化剂使用寿命,采用共沉淀法制备Cu O-Bi2O3粉体,并使用溶胶-凝胶法对其进行包覆制备核壳结构Cu O-Bi2O3@meso-Si O2催化剂,利用XRD、低温N2物理吸附-脱附和TEM对其织构和结构进行表征,考察在甲醛乙炔化反应中的催化活性和稳定性。结果表明,核壳结构催化剂整体外观呈球形,Si O2包覆层为有序介孔结构。与工业催化剂和未包覆的Cu O-Bi2O3粉体相比,核壳结构Cu O-Bi2O3@meso-Si O2催化剂在甲醛乙炔化反应中表现出更优异的稳定性。
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| 关 键 词： | 催化化学 CuO-Bi2O3 甲醛乙炔化 1 4-丁炔二醇 核壳结构 |
Preparation of core-shell CuO-Bi2 O3@meso-SiO2 catalyst and its catalytic performance for formaldehyde ethynylation |
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| Ma Zhiqiang,Zhang Hongxi,Li Haitao,Wu Ruifang,Wang Junjun,Guo Jiangyuan,Wang Zhipeng,Zhao Yongxiang.Preparation of core-shell CuO-Bi2 O3@meso-SiO2 catalyst and its catalytic performance for formaldehyde ethynylation[J].Industrial Catalysis,2015,23(5):344-348. |
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| Authors: | Ma Zhiqiang Zhang Hongxi Li Haitao Wu Ruifang Wang Junjun Guo Jiangyuan Wang Zhipeng Zhao Yongxiang |
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| Affiliation: | Engineering Research Center for Fine Chemicals of Ministry of Education, ;
School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China |
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| Abstract: | CuO-Bi2O3 powder was prepared by coprecipitation method.Using CuO-Bi2O3 powder as the core,core-shell CuO-Bi2O3@meso-SiO2 catalyst was fabricated by sol-gel technology in order to improve the stability of CuO-Bi2O3 catalyst employed in the ethynylation of formaldehyde,restrain its activity decrease caused by loss of active components,and prolong its life-span.The obtained catalyst was characterized by BET,XRD and TEM.The stability and activity of CuO-Bi2O3@meso-SiO2 catalyst for formaldehyde ethynylation was investigated. The results indicated that CuO-Bi2O3@meso-SiO2 catalyst possessed clear core-shell structure,and the silica shell composed of radially aligned mesoporous.Compared with commercial catalyst and CuO-Bi2O3 powder,core-shell CuO-Bi2O3@meso-SiO2 catalyst exhibited excellent stability in the reaction of formaldehyde ethynylation. |
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| Keywords: | catalytic chemistry CuO-Bi2 O3 formaldehyde ethynylation 1 4-butynediol core-shell structure |
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