Cu含量对以水滑石为前驱体的Cu/Co/Mn/Al催化剂高级醇合成性能的影响 |
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作者单位: | 1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China;2. Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P. R. China |
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基金项目: | The project was supported by the National Natural Science Foundation of China(21403278);China Shenhua Coal to Liquid;Chemical Company Limited, Shanxi Lu?an Coal Corporation Limited;Shell Global Solutions International B. V |
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摘 要: |
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关 键 词: | 高级醇合成 水滑石前驱体 Cu/Co/Mn/Al催化剂 铜钴摩尔比 合成气转化 |
收稿时间: | 2016-12-28 |
Influences of Cu Content on the Cu/Co/Mn/Al Catalysts Derived from Hydrotalcite-Like Precursors for Higher Alcohols Synthesis via Syngas |
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Authors: | Pei-Yi LIAO Chen ZHANG Li-Jun ZHANG Yan-Zhang YANG Liang-Shu ZHONG Xiao-Ya GUO Hui WANG Yu-Han SUN |
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Institution: | 1. School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, P. R. China;2. Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, P. R. China |
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Abstract: | A series of Cu/Co/Mn/Al catalysts derived from hydrotalcite precursors with different Cu/Co molar ratios (0, 0.1, 0.5, 1.0, and 2.0) were prepared and used for the synthesis of higher alcohols from syngas. N2 physical adsorption desorption, inductively coupled plasma atomic emission spectrometry (ICP-AES), X-ray diffraction (XRD), scanning electron microscopy (SEM), hydrogen temperature-programmed reduction (H2-TPR), thermogravimetry (TG), and high-resolution transmission electron microscopy (HRTEM) techniques were employed to investigate the physical and chemical properties of the Cu/Co/Mn/Al catalysts. The results show that the optimum Cu content can increase specific surface area, improve reducibility, and form regular layered structure to provide more uniform distribution of active sites, thereby enhancing catalytic activity and alcohol selectivity. When the Cu/Co molar ratio was 0.5, the yield of alcohol and the alcohol selectivity reached the maximum values of 0.071 g·g-1·h-1 and 35.9%, respectively. |
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Keywords: | Higher alcohols synthesis Layered-double hydroxide Cu/Co/Mn/Al catalyst Cu/Co molar ratio Syngas conversion |
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