催化学报

催化学报 ›› 2010, Vol. 31 ›› Issue (6): 619-622.

• 研究快讯 • 上一篇    下一篇

不同形貌的 CeO2 催化 1,4-丁二醇选择性脱水合成 3-丁烯-1-醇

贺永艺, 李奇飚, 王永钊, 赵永祥   

  1. 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
  • 收稿日期:2010-06-25 出版日期:2010-06-25 发布日期:2013-12-05

Selective Catalytic Dehydration of 1,4-Butanediol to 3-Buten-1-ol over CeO2 with Different Morphology

HE Yongyi, LI Qibiao, WANG Yongzhao, ZHAO Yongxiang*   

  1. Engineering Research Center of Ministry of Education for Fine Chemicals, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, Shanxi, China
  • Received:2010-06-25 Online:2010-06-25 Published:2013-12-05

PDF

1578

被引次数

36

摘要： 以 Ce(NO3)3•6H2O 为铈源, 采用不同沉淀剂制备了 CeO2 催化剂. 运用 N2 吸附-脱附、X 射线衍射、高分辨透射电镜和 H2程序升温还原等技术对催化剂进行了表征, 并评价了其对 1,4-丁二醇选择性脱水合成 3-丁烯-1-醇反应的催化性能. 结果表明, 以不同沉淀剂制得的 CeO2 样品形貌不同, 其中以 Na2CO3 为沉淀剂制备的 CeO2 呈边缘清晰的长方体形貌, 晶粒尺寸较大, 结晶较完整, 优先暴露的 (111) 晶面较多, 在 1,4-丁二醇选择性脱水反应中表现出较高的催化活性和选择性, 3-丁烯-1-醇收率可达 59.7%.

关键词: 氧化铈, 形貌, 4-丁二醇, 脱水, 3-丁烯-1-醇

Abstract: CeO2 catalyst samples were prepared by the precipitation method using Ce(NO3)3•6H2O as a precursor. These samples were characterized by N2 adsorption-desorption, X-ray diffraction, high resolution transmission electron microscopy, and H2 temperature-programmed reduction. The catalytic performance of these samples for the selective dehydration of 1,4-butanediol to 3-buten-1-ol was investigated. The results show that the CeO2 catalyst samples that were prepared using different precipitants exhibited different morphology. The CeO2 sample precipitated by sodium carbonate showed regular rectangular morphology with clear edges, larger crystallite size, well-grown crystals and preferentially exposed (111) facets. It also had higher activity and higher selectivity in the selective dehydration of 1,4-butanediol to 3-buten-1-ol with yield as high as 59.7%.

Key words: ceria, morphology, 4-butanediol, dehydration, 3-buten-1-ol