| 用于新型热电薄膜氢气传感器的负载型Pt催化剂 |
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| 引用本文： | 张建松,黄琥,栾伟玲,戚蕴石.用于新型热电薄膜氢气传感器的负载型Pt催化剂[J].石油化工,2006,35(12):1145-1150. |
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| 作者姓名： | 张建松 黄琥 栾伟玲 戚蕴石 |
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| 作者单位： | 华东理工大学,机械与动力工程学院,上海,200237 |
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| 基金项目： | 国家自然科学基金;上海市"曙光计划" |
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| 摘 要： | 选用Pt为活性组分,γ-Al2O3、γ-Al2O3-碳纳米管(CNT)和活性碳纤维布(ACC)为载体,制备了用于热电薄膜氢气传感器的负载型Pt催化剂,研究了3种载体对负载型Pt催化剂活性的影响。实验结果表明,在载体中加入CNT可有效提高负载型Pt催化剂的活性;ACC的高比表面积使Pt/ACC催化剂的活性最高。确定了Pt/ACC催化剂的最佳制备条件:Pt质量分数19.9%,还原温度180℃,还原时间3h。将Pt/ACC催化剂与热电薄膜结合进行氢敏性能测试,测试结果显示,使用Pt/ACC催化剂的热电薄膜氢气传感器在室温下即具有优异的性能,在30℃下表现出最高的饱和温差(47℃)和快速响应与恢复性能;在160℃以下对工作气体的选择性极佳。
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| 关 键 词： | 铂 碳纳米管 负载型催化剂 氢气传感器 热电薄膜 |
| 文章编号： | 1000-8144(2006)12-1145-06 |
| 修稿时间： | 2006年7月11日 |
Application of Supported Pt Catalyst in Thermoelectric Film Hydrogen Sensor |
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| Zhang Jiansong,Huang Hu,Luan Weiling,Qi Yunshi.Application of Supported Pt Catalyst in Thermoelectric Film Hydrogen Sensor[J].Petrochemical Technology,2006,35(12):1145-1150. |
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| Authors: | Zhang Jiansong Huang Hu Luan Weiling Qi Yunshi |
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| Abstract: | Supported Pt catalysts used in thermoelectric film hydrogen sensor were prepared by sol-gel method and impregnation separately.Effects of three supports,namely γ-Al2O3,γ-Al2O3-carbon nanotube(CNT)and active carbon fiber fabric(ACC),on catalyst activity were investigated.CNT can effectively enhance activity of the catalyst.ACC with high specific surface area results in the highest activity of Pt/ACC catalyst.Optimal conditions for preparation of Pt/ACC catalyst were:Pt mass fraction 19.9%,reduction temperature 180 ℃ and reduction time 3 h.Pt/ACC catalyst in thermoelectric film hydrogen sensor exhibits excellent hydrogen-sensing properties at room temperature with high temperature difference(47 ℃)output,quick response and recovery capability.The selectivity to hydrogen gas on Pt/ACC catalyst is very good below 160 ℃. |
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| Keywords: | platinum carbon nanotube supported catalyst hydrogen sensor thermoelectric film |
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