| 负载型CuO/TiO2催化剂催化CO2加氢制甲醇 |
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| 引用本文： | 刘超恒,郭晓明,钟成林,李亮,华玉喜,毛东森,卢冠忠.负载型CuO/TiO2催化剂催化CO2加氢制甲醇[J].无机化学学报,2013,29(18). |
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| 作者姓名： | 刘超恒 郭晓明 钟成林 李亮 华玉喜 毛东森 卢冠忠 |
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| 作者单位： | 上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418,上海应用技术大学化学与环境工程学院, 应用催化研究所, 上海 201418 |
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| 基金项目： | 上海市教委科研创新项目（No.13YZ117）、上海市科委自然科学基金（No.13ZR1441200）和国家自然科学基金（No.21273150，21502116） |
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| 摘 要： | 采用浸渍法制备了CuO/TiO2负载型催化剂，并将其用于CO2加氢制甲醇反应。重点考察了铜的负载量对催化剂性能的影响，并对其物化性能和催化性能之间的关系进行了讨论。结果发现，随着铜负载量的增加，催化剂中金属铜的比表面先增加后减小，当铜的负载量为10%（质量百分数）时达到最大值。催化剂的表面碱性位数量随铜含量的增加持续减小，中等碱位和强碱位的强度下降。当铜的负载量不高于10%时，CO2的转化率与铜的比表面积呈线性关系。甲醇选择性与催化剂的表面碱位性质有关，过强的碱性位会降低甲醇选择性。
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| 关 键 词： | CuO/TiO2 负载量 铜的比表面 碱性 二氧化碳加氢 甲醇 |
Methanol Synthesis from CO2 Hydrogenation over Supported CuO/TiO2 Catalysts |
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| LIU Chao-Heng,GUO Xiao-Ming,ZHONG Cheng-Lin,LI Liang,HUA Yu-Xi,MAO Dong-Sen and LU Guan-Zhong.Methanol Synthesis from CO2 Hydrogenation over Supported CuO/TiO2 Catalysts[J].Chinese Journal of Inorganic Chemistry,2013,29(18). |
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| Authors: | LIU Chao-Heng GUO Xiao-Ming ZHONG Cheng-Lin LI Liang HUA Yu-Xi MAO Dong-Sen and LU Guan-Zhong |
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| Institution: | Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China,Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China,Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China,Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China,Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China,Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China and Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China |
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| Abstract: | CuO/TiO2 catalysts were prepared by the impregnation method and used for methanol synthesis from CO2 hydrogenation. The influences of Cu loading amount on the properties of CuO/TiO2 were investigated, and the relationship between the physicochemical and catalytic properties was discussed. The results show that the copper surface area increases first and then decreases with increasing Cu loading amount, and a maximum is obtained as Cu loading amount is 10% (w/w). Moreover, with the increase in Cu loading, the amount of basic sites decreases continuously accompanied by a decline in the strength of the medium and strong basic sites. For catalysts with Cu loading of no more than 10%, the CO2 conversion increase linearly with the increase in the copper surface area. The methanol selectivity is related to the surface basicity, and an excessive basicity leads to a decrease in methanol selectivity. |
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| Keywords: | CuO/TiO2 loading amount copper surface area basicity CO2 hydrogenation methanol |
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