化工进展 ›› 2015, Vol. 34 ›› Issue (02): 407-412.DOI: 10.16085/j.issn.1000-6613.2015.02.017

• 工业催化 • 上一篇    下一篇

助剂二氧化硅对CO2加氢制备甲醇CuO-ZnO-Al2O3-ZrO2催化剂性能的影响

贾淼尧1,2,4, 高文桂2,3,4, 王华2,3,4, 王禹皓1,3,4   

  1. 1. 昆明理工大学化学工程学院, 云南 昆明 650500;
    2. 昆明理工大学冶金与能源工程学院, 云南 昆明 650093;
    3. 昆明理工大学冶金节能减排教育部工程研究中心, 云南 昆明 650093;
    4. 云南省复杂有色金属资源清洁利用国家重点实验室, 云南 昆明 650093
  • 收稿日期:2014-06-23 修回日期:2014-09-21 出版日期:2015-02-05 发布日期:2015-02-05
  • 通讯作者: 高文桂,副教授,主要从事能源催化和二氧化碳资源化利用研究。E-mail:gao_wengui@126.com
  • 作者简介:贾淼尧(1988-),男,硕士。E-mail:475232707@qq.com
  • 基金资助:
    国家科技支撑计划(2011 BAC01B03)、国家自然科学基金(51304099)、云南省应用基础研究计划(2013FZ035)及昆明理工大学分析测试基金(20140350)项目

Effect of promoter silica on performance of CuO-ZnO-Al2O3-ZrO2 catalyst for methanol synthesis from CO2 hydrogenation

JIA Miaoyao1,2,4, GAO Wengui2,3,4, WANG Hua2,3,4, WANG Yuhao1,3,4   

  1. 1. School of Chemical Engineering, Kunming University of Science and Technology, Kunming 650500, Yunnan, China;
    2. School of Metallurgy and Energy Engineering, Kunming University of Science and Technology, Kunming 650093 Yunnan, China;
    3. Engineering Research Center of Metallurgical Energy Conservation and Emission Reduction, Ministry of Education, Kunming University of Science and Technology, Kunming 650093, Yunnan, China;
    4. State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province, Kunming University of Science and Technology, Kunming 650093, Yunnan, China
  • Received:2014-06-23 Revised:2014-09-21 Online:2015-02-05 Published:2015-02-05

摘要: 采用共沉淀法制备了一系列CuO-ZnO-Al2O3-ZrO2(CZAZ)催化剂,用于二氧化碳加氢合成甲醇。通过加入少量的助剂二氧化硅得到了一系列CZAZ/SiO2改性催化剂。采用XRD、BET、H2-TPR、NH3-TPD以及CO2-TPD等技术进行表征,研究了助剂二氧化硅含量对催化剂的物理化学性质以及组织结构的影响。结果表明,助剂二氧化硅的含量对催化剂的组织结构具有较大的影响。同时评价了该组催化剂参与二氧化碳加氢合成甲醇反应的催化性能。测试结果表明,采用助剂二氧化硅质量分数为4%的改性催化剂,表现出较为优良的催化活性。助剂二氧化硅促进了活性组分氧化铜的分散,并且经过二氧化硅改性的CZAZ催化剂具有更大的比表面积,这些因素都对该催化剂在二氧化碳加氢合成甲醇方面的良好表现起到重要作用。

关键词: 二氧化硅, 二氧化碳, 甲醇, 合成, 催化剂, 共沉淀法

Abstract: Various CuO-ZnO-Al2O3-ZrO2 (CZAZ) catalysts for methanol synthesis from CO2 hydrogenation were prepared by the co-precipitation method. A small amount of silica was incorporated into CZZ catalyst to produce these modified ternary CZAZ catalysts. The effects of silica on physicochemical and catalytic properties were studied with XRD,BET,H2-TPR,NH3-TPD and CO2-TPD. The properties of catalysts were strongly influenced by the content of SiO2 used as promoter. The catalytic performance for methanol synthesis from CO2 hydrogenation was evaluated. CZAZ catalyst modified with 4% SiO2 exhibited optimum catalytic activity. Silica improved dispersion of CuO and its modified CZAZ catalysts exhibited higher specific surface area,which were confirmed to be responsible for excellent performance for methanol synthesis from CO2 hydrogenation.

Key words: silica dioxide, carbon dioxide, methanol, synthesis, catalyst, co-precipitation

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