| ZrxTixAl1-2xO2的制备及其在三效催化剂上的应用 |
| ZrxTixAl1-2xO2 Mixed Oxide:Preparation and Application in Three-way Catalysts |
|
| 摘要: |
| 关键词: XRD TPD Zr0.25Ti0.25Al0.5O2氧化物 Pt 三效催化剂(TWC) |
| 基金项目: |
| Abstract: Zr0.5Ti0.5O2(ZT) and Zr0.25Ti0.25Al0.5O2(ZTA) mixed oxides were prepared by co-precipitation method and characterized by low temperature adsorption-desorption， XRD and NH3-TPD. The activity of Pt/Zr0.5Ti0.5O2 and Pt/ Zr0.5Ti0.5Al0.5O2 catalysts was evaluated using the simulated gases. The results show that ZTA samples exhibit higher specific surface area， larger pore volume and proper surface acidic amount and acidity in comparison with ZT. The results of the catalytic test indicate that Pt/ZT and Pt/ZTA catalysts exhibit excellent low-temperature catalytic activity and lower light-off temperatures of hydrocarbon， carbon monoxide and nitrogen oxides， especially better conversion for nitrogen oxides (NOx). The addition of Al2O3 into ZT enhanced the anti-aging property of Pt/ ZTA catalysts due to the excellent textural， structural， surface acidity and thermal stability. |
| Keywords: XRD TPD Zr0.25Ti0.25Al0.5O2 mixed oxides Pt three-way catalysts (TWCs) |
| |
| 摘要点击次数: 1418 |
| 全文下载次数: 1358 |
| 喻 瑶,龚茂初,郭家秀,林 涛,袁书华,陈耀强.ZrxTixAl1-2xO2的制备及其在三效催化剂上的应用[J].无机化学学报,2007,23(8):1453-1456. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
