| High Temperature Seedless Synthesis of Au NRs Using BDAC/CTAB Co-surfactant |
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| 作者姓名： | 李敏 卫来 张娴 喻学锋 |
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| 作者单位： | 四川大学化学工程学院，成都610065;四川大学化学工程学院，成都610065;重庆工学院化学与生物工程学院，重庆400050;四川大学化学工程学院，成都610065 |
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| 摘 要： | 采用等离子体活化技术制备了一种新型Ni/γ-Al2O3催化剂用于CO2重整CH4反应. 等离子体强化制备的催化剂表现出较高的反应活性和较好的抗积碳能力. 为了达到相同CH4转化率，常规焙烧的催化剂需要比等离子体处理的催化剂高出50 °C 的反应温度. 反应结束后，等离子体处理催化剂的失活率仅为1.7%，而常规催化剂上的失活率为15.2%。通过对催化剂进行BET、H2-TPR、XRD、CO2-TPD和TG等表征分析，结果表明等离子体增强制备方法使催化剂的平均孔直径减小，比表面积增加；催化剂的还原性，镍物种的分散度和催化剂对CO2的吸附量都有显著的提高.
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| 关 键 词： | 镍基催化剂，等离子体，CO2重整CH4，积碳，CO2的吸附量 |
| 收稿时间： | 2008/3/20 0:00:00 |
High Temperature Seedless Synthesis of Au NRs Using BDAC/CTAB Co-surfactant |
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| Min Li,Lai Wei,Xian Zhang and Xue-feng Yu.High Temperature Seedless Synthesis of Au NRs Using BDAC/CTAB Co-surfactant[J].Chinese Journal of Chemical Physics,2008,21(5):476-480. |
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| Authors: | Min Li Lai Wei Xian Zhang and Xue-feng Yu |
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| Institution: | Department of Chemical Engineering, Sichuan University, Chengdu 610065, China;Department of Chemical Engineering, Sichuan University, Chengdu 610065, China;Department of Chemical and Biological Engineering, Chongqing Institute of Technology, Chongqing 400050, China;Department of Chemical Engineering, Sichuan University, Chengdu 610065, China |
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| Abstract: | Au nanorods have been successfully synthesized at 90°C by using hexadecyltrimethylammonium bromide (CTAB) and benzyldimethylammoniumchloride hydrate (BDAC) co-surfactant. At 90 °C, the reaction time was less than 10 s, and the longitudinal surface plasmon absorption band could vary between 680 and 770 nm by adjusting the molar ratio of BDAC to CTAB from 2 to 0.5. At 90 °C, nanorods with a longitudinal surface plasmon absorption peak of 770 nm can be obtained when the molar ratio of BDAC to CTAB was 3:2. |
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| Keywords: | Nickel-based catalyst Plasma CO2 reforming of CH4 Coke Adsorption of CO2 |
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