引用本文:
蒋晓原, 周仁贤, 毛建新, 郑小明. CeO2在Pd/γ-Al2O3催化剂中的助剂作用[J]. 应用化学,
1999, 16(1): 26-29.
Citation: Jiang Xiaoyuan, Zhou Renxian, Mao Jianxin, Zheng Xiaoming. Cocatalytic Role of CeO2 in Combination with Pd/γ-Al2O3 Catalyst[J]. Chinese Journal of Applied Chemistry, 1999, 16(1): 26-29.
Citation: Jiang Xiaoyuan, Zhou Renxian, Mao Jianxin, Zheng Xiaoming. Cocatalytic Role of CeO2 in Combination with Pd/γ-Al2O3 Catalyst[J]. Chinese Journal of Applied Chemistry, 1999, 16(1): 26-29.
CeO2在Pd/γ-Al2O3催化剂中的助剂作用
摘要:
用色谱-微反流动法技术考察了富氧和贫氧条件下,添加CeO2对Pd/γ-Al2O3催化剂上CO氧化反应的影响,并运用TPR、TPD-MS及SEM等技术研究了CeO2-Pd/γ-Al2O3催化剂.结果表明:CeO2、Pd的共助作用使CeO2-Pd/γ-Al2O3催化剂TPR还原峰温向低温方向移动;CeO2的存在使Pd/γ-Al2O3催化剂表面的吸附氧容易脱出,从而改善了催化剂的氧化活性;CeO2、Pd间的强相互作用使催化剂上Pd元素的分散程度增加.
-
关键词:
- CeO2
- / 催化活性
- / Pd/γ-Al2O3
- / CO氧化反应
English
Cocatalytic Role of CeO2 in Combination with Pd/γ-Al2O3 Catalyst
Abstract:
The TPR, SEM, TPD-MS techniques and CO oxidation activity measurement have been used to study CeO2-Pd/γ-Al2O3 catalyst under oxygen-enriched and oxygen-deficient conditions. Results showed that interaction between CeO2 and Pd caused the peak of the CeO2-Pd/γ-Al2O3 catalyst in TPR curve to shift to lower temperature, promoted surface oxygen desorption of Pd/γ-Al2O3, favored the Pd distribution, improving the oxidation activity of the catalyst.
-
Key words:
- CeO2
- / catalytic activity
- / Pd/γ-Al2O3
- / CO oxidation
-
-
扫一扫看文章
计量
- PDF下载量: 1
- 文章访问数: 999
- HTML全文浏览量: 93
下载:
