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| 氧化铝孔结构特征对Pd基催化剂性能的影响 | |
| 引用本文： | 张振强,桓源峰,贺小昆,赵云昆,段春坤.氧化铝孔结构特征对Pd基催化剂性能的影响[J].稀有金属材料与工程,2011,40(1):74-79. |
| 作者姓名： | 张振强 桓源峰 贺小昆 赵云昆 段春坤 |
| 作者单位： | 1. 昆明贵金属研究所,云南,昆明,650106 2. 昆明贵研催化剂有限责任公司,云南,昆明,650106;昆明理工大学,云南,昆明,650093 3. 昆明贵研催化剂有限责任公司,云南,昆明,650106 |
| 基金项目： | 国家“973”重大基础研究项目(2007CB613700)；国家“十一五”科技支撑计划重点项目(2007BAG06B04)；国家杰出青年科学基金(50725413)；重庆市科技攻关项目(CSTC2009AB4008) |
| 摘 要： | 考察2种γ-Al2O3改性前后的孔结构参数,并以改性氧化铝为涂层基体材料制备Pd基催化剂。结果表明,改性Al2O3-02具有比表面积:134.691m2·g-1,孔容:0.5851cm3·g-1,孔径:8.6877nm,且用其制备的Pd基催化剂TWC-02的性能较优越;该催化剂经950℃煅烧后,Pd均匀分散于改性Al2O3-02表面,甚至温度≥1050℃高温条件下煅烧后Pd的分散性仍较好。氧化铝对Pd基催化剂起到结构助催化作用,起燃活性评价试验也证实改性Al2O3-02的这一优越性能。 |
| 关 键 词： | 比表面 孔结构 Pd基催化剂 老化试验 催化特性 |
| 收稿时间： | 2010/1/18 0:00:00 |
Influences of Alumina Pore Structure Character on Properties of Pd-Based Catalyst |
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| Zhang Zhenqiang,Huan Yuanfeng,He Xiaokun,Zhao Yunkun and Duan Chunkun.Influences of Alumina Pore Structure Character on Properties of Pd-Based Catalyst[J].Rare Metal Materials and Engineering,2011,40(1):74-79. | |
| Authors: | Zhang Zhenqiang Huan Yuanfeng He Xiaokun Zhao Yunkun and Duan Chunkun |
| Affiliation: | Kunming Institute of Precious Metals, Kunming 650106, China |
| Abstract: | Pore structural parameters of 2 kinds of alumina before and after modification were reported, and with the modified alumina as coating Pd-based catalysts were prepared. The results show that the modified Al2O3-02 has specific area of 134.691 m2·g-1 and pore structure of 0.5851 cm3·g-1 and 8.6877 nm. The obtained Pd-based catalyst TWC-02 has superior properties. After calcining the catalyst at 950 oC, Pd grains homogeneously disperse in the surface of modified Al2O3-02; even ≥1050 oC, the dispersity of Pd is still good. Alumina has the effect of structure promoter on Pd-based catalyst. The superiority of the structure character of Al2O3-02 is also proved by a light-off active test. |
| Keywords: | specific area pore structure Pd-based catalyst aging test catalytic properties |
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