| Zr基载体负载Pd催化剂用于贫燃天然气汽车尾气净化 |
| |
| 引用本文： | 龙恩艳,王云,张晓玉,李移乐,龚茂初,陈耀强.Zr基载体负载Pd催化剂用于贫燃天然气汽车尾气净化[J].催化学报,2010,31(3):313-316. |
| |
| 作者姓名： | 龙恩艳 王云 张晓玉 李移乐 龚茂初 陈耀强 |
| |
| 作者单位： | 四川大学化学学院绿色化学与技术教育部重点实验室,四川成都,610064 |
| |
| 基金项目： | 国家自然科学基金(20773090) |
| |
| 摘 要： | 采用共沉淀法制备了 ZrO2, Y0.1Zr0.9Ox, Ce0.1Zr0.9Ox 和 Al0.1Zr0.9Ox 系列 Zr 基载体, 并用 N2 吸附-脱附和 X 射线衍射对其进行了表征. 再以此为载体, 采用浸渍法制备了整体式负载 Pd 催化剂, 催化剂涂层的涂覆量为 180 g/L 左右, Pd 含量为 1.25%. 测定了催化剂上 Pd 的分散度. 在模拟的贫燃天然气汽车尾气中考察了催化剂的活性, 并在尾气中有或无 SO2 存在的条件下比较了催化剂活性的差异. 结果表明, Y3+, Ce4+ 或 Al3+ 改性载体负载的 Pd 催化剂的耐硫性能明显改善; 无论尾气中是否存在 SO2, 以 Y3+ 或 Al3+ 改性载体负载的 Pd 催化剂的活性均明显高于 ZrO2 负载体的 Pd 催化剂.
|
| 关 键 词： | 钯 氧化锆 负载型催化剂 贫燃天然气 甲烷转化 硫中毒 |
| 收稿时间： | 2010-03-25 |
Pd Catalysts Supported on Zr-Based Materials Used in Lean-Burn Natural Gas Exhaust Combustion |
| |
| LONG Enyan,WANG Yun,ZHANG Xiaoyu,LI Yile,GONG Maochu,CHEN Yaoqiang.Pd Catalysts Supported on Zr-Based Materials Used in Lean-Burn Natural Gas Exhaust Combustion[J].Chinese Journal of Catalysis,2010,31(3):313-316. |
| |
| Authors: | LONG Enyan WANG Yun ZHANG Xiaoyu LI Yile GONG Maochu CHEN Yaoqiang |
| |
| Affiliation: | Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, Sichuan, China |
| |
| Abstract: | A series of Zr-based supports such as ZrO2, Y0.1Zr0.9Ox, Ce0.1Zr0.9Ox, and Al0.1Zr0.9Ox were prepared by a co-precipitation method. The physicochemical properties of the supports were characterized by N2 adsorption-desorption (the Brunauer-Emmet-Teller method) and X-ray powder diffraction. The Pd-based catalysts were prepared with Pd supported on these supports by the impregnation method. The Pd dispersion on the catalyst surface was characterized by CO chemisorption. The activity of the Pd-based catalysts ... |
| |
| Keywords: | palladium zirconia supported catalyst lean-burn natural gas methane conversion sulphur poisoning |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《催化学报》浏览原始摘要信息 |
|
点击此处可从《催化学报》下载全文 |
|
