| 郑艳,孙自瑾,王永钊,李海涛,王韶安,罗敏,赵吉龙,赵永祥.CuO-Bi2O3/SiO2-MgO催化剂的制备及炔化性能[J].分子催化,2012,(3):233-238 |
| CuO-Bi2O3/SiO2-MgO催化剂的制备及炔化性能 |
| Preparation of CuO-Bi2O3/SiO2-MgO Catalyst and Its Ethynylation Performance |
| 投稿时间：2012-03-08 修订日期：2012-04-15 |
| DOI： |
| 中文关键词: 乙炔化，铜铋催化剂，SiO2-MgO复合物，1,4-丁炔二醇 |
| 英文关键词:Ethynylation, CuO-Bi2O3 Catalyst, SiO2-MgO Complex, 1, 4-Butynediol |
| 基金项目:国家自然科学基金项目（21073114） |
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| 摘要点击次数: 3976 |
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| 中文摘要: |
| 采用浸渍法、沉积-沉淀法、共沉淀法制备了CuO-Bi2O3/SiO2-MgO催化剂，利用低温N2物理吸-脱附、透射电镜（TEM）、X射线衍射（XRD）、H2程序升温还原（H2-TPR）、傅里叶红外（FT-IR）等技术对其进行了表征，并考察了催化剂在甲醛乙炔化合成1,4-丁炔二醇反应中的催化性能。结果表明，制备方法对催化剂中活性组分分散度及还原性能有较大影响，进而在甲醛乙炔化合成1, 4-丁炔二醇反应中表现出不同的催化活性。采用共沉淀法制备的催化剂中活性物种CuO具有高的分散度与较好的还原能力，经活化后可生成数量较多的炔铜络合物活性中心，表现出最佳的炔化反应活性与丁炔二醇选择性。 |
| 英文摘要: |
| CuO-Bi2O3/SiO2-MgO catalysts were prepared by impregnation, deposition precipitation and co-precipitation methods for the ethynylation of formaldehyde to 1,4-butynediol. The obtained catalysts were characterized by N2 physisorption, TEM, XRD, H2-TPR，and FT-IR. It was found that there were obvious differences in reaction performance due to different reduction property and dispersion of CuO among the catalysts prepared by different methods. The CuO-Bi2O3/SiO2-MgO catalyst prepared by co-precipitation methods have better reduction property and higher CuO dispersion. So CuO can be easily transformed to the alkyne copper complex in the process of activiation and the catalysts show the best catalytic acitivity and selectivity. |
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