| CuO/TiO2/γ-Al2O3催化剂表征及对NO+CO反应性能研究(英文) |
| Characterization and Catalytic Properties of CuO/TiO2/γ-Al2O3 for NO+CO Reaction |
|
| 摘要: 采用色谱-微反流动法反应装置考察了w%CuO/15%TiO2/γ-Al2O3催化剂对NO+CO的反应活性；催化剂经空气氛或氢气氛预处理后，NO转化率达100%的反应温度分别是325和275 ℃；XRD仅能检测到γ-Al2O3晶相，负载15%CuO后可以检测到微弱的CuO晶相；H2-TPR能检测到2个CuO的还原峰(α和β峰)，将其归属于高度分散的CuO分别在裸露的γ-Al2O3和TiO2/γ-Al2O3载体上的还原；原位红外分析结果表明催化剂经空气氛或氢气氛预处理后，吸附NO+CO反应气后，反应的中间产物N2O出现的温度分别为200和150 ℃。 |
| 关键词: CuO-TiO2/γ-Al2O3 NO+CO反应 NO+CO吸附 原位红外表征 |
| 基金项目: |
| Abstract: The catalytic activity and properties of w%CuO/15%TiO2/γ-Al2O3 in NO+CO reaction were examined using a micro-reactor gas chromatography reaction system. When pretreated by air and H2, the catalysts had 100% NO conversion at 325 and 275 ℃, respectively. The XRD analysis could only detect γ-Al2O3 crystal diffraction and weak CuO crystal diffraction peaks after 15%CuO loading. There were two H2-TPR reduction peaks in CuO-TiO2/γ-Al2O3, the α peak due to the highly dispersed CuO which spread on γ-Al2O3 surface and the other peak due to the highly dispersed CuO which dispersed on 15%TiO2/γ-Al2O3 surface. The DRIFTS analysis showed that catalysts with pretreatment in air or H2 atmosphere adsorbed NO+CO gases, and the N2O adsorption peaks appeared at 200 and 150 ℃，respectively. |
| Keywords: CuO-TiO2/γ-Al2O3 NO+CO reaction NO+CO adsorption DRIFTS characterization |
| |
| 摘要点击次数: 1400 |
| 全文下载次数: 1785 |
| 李惠娟,蒋晓原,张 旭,郑小明.CuO/TiO2/γ-Al2O3催化剂表征及对NO+CO反应性能研究(英文)[J].无机化学学报,2008,24(6):848-855. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
