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

doi:10.16085/j.issn.1000-6613.2015.02.017

Chemical Industry and Engineering Progree ›› 2015, Vol. 34 ›› Issue (02): 407-412.DOI: 10.16085/j.issn.1000-6613.2015.02.017

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

JIA Miaoyao^1,2,4, GAO Wengui^2,3,4, WANG Hua^2,3,4, WANG Yuhao^1,3,4

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

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. 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

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

Abstract

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

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

CLC Number:

O643

JIA Miaoyao, GAO Wengui, WANG Hua, WANG Yuhao. Effect of promoter silica on performance of CuO-ZnO-Al₂O₃-ZrO₂ catalyst for methanol synthesis from CO₂ hydrogenation[J]. Chemical Industry and Engineering Progree, 2015, 34(02): 407-412.

贾淼尧, 高文桂, 王华, 王禹皓. 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[J]. 化工进展, 2015, 34(02): 407-412.

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

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

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