| 助剂对Ni/γ-Al2O3催化剂活性和抗水合性能的影响 |
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| 引用本文： | 孙自瑾,李海涛,徐亚琳,吴君璧,赵永祥.助剂对Ni/γ-Al2O3催化剂活性和抗水合性能的影响[J].工业催化,2012,20(5):14-18. |
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| 作者姓名： | 孙自瑾 李海涛 徐亚琳 吴君璧 赵永祥 |
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| 作者单位： | 1.山西三维集团股份有限公司，山西 洪洞 041603；;
2.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： | 国家自然科学基金，山西省科技攻关项目 |
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| 摘 要： | 采用浸渍法制备了不同种类助剂改性的Ni-M/γ-Al2O3催化剂，通过XRD、低温氮气物理吸附和FT-IR等手段对改性前后的催化剂进行表征，并考察催化剂在1,4-丁炔二醇加氢反应中的活性和抗水合性能。结果表明，在所选助剂中，SiO2的引入使催化剂维持了较高的加氢活性，同时，显著提高了Ni/γ-Al2O3催化剂的抗水合性能，γ-Al2O3表面Si-O-Al的形成是SiO2抑制γ-Al2O3发生水合的直接原因。
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| 关 键 词： | 催化剂工程 Ni/γ-Al2O3催化剂 1 4-丁炔二醇 抗水合性能 助剂SiO2 |
Effects of the promoter on catalytic activity and hydrothermal stability of Ni/γ-Al2O3 catalysts |
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| SUN Zijin
,
LI Haitao
,
XU Yalin
,
WU Junbi
,
ZHAO Yongxiang.Effects of the promoter on catalytic activity and hydrothermal stability of Ni/γ-Al2O3 catalysts[J].Industrial Catalysis,2012,20(5):14-18. |
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| Authors: | SUN Zijin LI Haitao XU Yalin WU Junbi ZHAO Yongxiang |
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| Affiliation: | 1.Shanxi Sanwei Group Co. Ltd., Hongtong 041603, Shanxi, China; 2.School of Chemistry and;
Chemical Engineering, Engineering Research Center of Ministry of Education for Fine Chemicals, ;
Shanxi University, Taiyuan 030006, Shanxi, China |
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| Abstract: | Ni/γ-Al2O3 catalysts modified with different promoters were prepared by impregnation method and characterized by XRD, N2 physisorption and FT-IR techniques. The effects of different promoters on the catalytic activity and hydrothermal stability of Ni/γ-Al2O3 catalyst in the hydrogenation of 1,4-butynediol were investigated. The results indicated that SiO2 was the best promoter,which had little effect on catalytic activity of Ni/γ-Al2O3catalyst,but could improve its hydrothermal stability remarkably. The formation of Si-O-A1 bond on the surface of γ-Al2O3 was the direct reason that addition of SiO2 inhibited the hydration of support γ-Al2O3under hydrothermal condition. |
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| Keywords: | catalyst engineering Ni／γ-Al2O3 catalyst 1 4-butynediol hydrothermal stability promoterSiO2 |
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