CuxCe1-xO2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能

引用本文: 赵福真, 曾鹏辉, 季生福. Cu_xCe_1-xO_2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能[J]. 无机化学学报, 2013, 29(4): 753-759. doi: 10.3969/j.issn.1001-4861.2013.00.122 shu

Citation: ZHAO Fu-Zhen, ZENG Peng-Hui, JI Sheng-Fu. Preparation, Characterization and CO Catalytic Oxidation Performance of Cu_xCe_1-xO_2-x/SBA-15/Cordierite Monolithic Catalysts[J]. Chinese Journal of Inorganic Chemistry, 2013, 29(4): 753-759. doi: 10.3969/j.issn.1001-4861.2013.00.122 shu

Cu_xCe_1-xO_2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能

基金项目:
国家自然科学基金(No.20473009)资助项目。 (No.20473009)

摘要: 以堇青石蜂窝陶瓷为载体, Cu_xCe_1-xO_2-x/SBA-15为催化活性组分, 制备了一系列10%~60%Cu_0.5Ce_0.5O_1.5/SBA-15/堇青石和50%Cu_xCe_1-xO_2-x/SBA-15/堇青石(x=0~1)整体式催化剂, 采用低温氮吸附－脱附、XRD、XPS和H₂-TPR对催化剂进行了表征, 在微型固定床反应器中评价了催化剂的CO催化氧化活性。结果表明:整体式催化剂仍然保持SBA-15的介孔结构, 催化剂中除了堇青石的物相外, 还有CuO和CeO₂物相, 催化剂表面的Cu以Cu²⁺和Cu⁺两种状态存在, Ce以Ce⁴⁺状态存在, 催化剂表面的氧化还原性能与Cu_0.5Ce_0.5O_1.5的含量和Cu、Ce的比例有一定的关系, 50%Cu_0.5Ce_0.5O_1.5/SBA-15/堇青石催化剂具有最好催化活性, CO可以在140℃完全转化。

关键词:

堇青石;整体式催化剂;Cu_xCe_1-xO_2-x;CO催化氧化

English

Preparation, Characterization and CO Catalytic Oxidation Performance of Cu_xCe_1-xO_2-x/SBA-15/Cordierite Monolithic Catalysts

1.
1 State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, 100029, China;
Received Date: 16 March 2012
Fund Project:
国家自然科学基金(No.20473009)资助项目。

Abstract: Cu_0.5Ce_0.5O_1.5/SBA-15/cordierite monolithic catalysts with the Cu_0.5Ce_0.5O_1.5 content from 10% to 60% and 50%Cu_xCe_1-xO_2-x/SBA-15/cordierite (x=0~1) monolithic catalysts were prepared using the cordierite as the support and the Cu_xCe_1-xO_2-x/SBA-15 as the catalytic component. The catalysts were characterized using Low Temperature Nitrogen Adsorption-Desorption, XRD, XPS and H₂-TPR. The catalytic activity of the catalysts for the oxidation of CO was evaluated. The results indicate that the mesoporous structure of SBA-15 is retained in the monolithic catalysts. There are the CuO and CeO₂ phases in addition to the cordierite phase. On the surface of the catalyst Cu exists as Cu²⁺ and Cu⁺ species and Ce is as Ce⁴⁺ species. The redox performance of the monolithic catalysts is related with the Cu_0.5Ce_0.5O_1.5 content and the ratio of the Cu and Ce in the Cu_xCe_1-xO_2-x/SBA-15. 50%Cu_0.5Ce_0.5O_1.5/SBA-15/cordierite monolithic catalyst exhibits the best catalytic activity. CO can be completely oxidized at 140℃.

Key words:

Cordierite;Monolithic catalysts;Cu_xCe_1-xO_2-x;CO oxidation

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Cu_xCe_1-xO_2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能

English

Preparation, Characterization and CO Catalytic Oxidation Performance of Cu_xCe_1-xO_2-x/SBA-15/Cordierite Monolithic Catalysts

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

CuxCe1-xO2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能

English

Preparation, Characterization and CO Catalytic Oxidation Performance of CuxCe1-xO2-x/SBA-15/Cordierite Monolithic Catalysts

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

Cu_xCe_1-xO_2-x/SBA-15/堇青石整体式催化剂及其CO催化氧化性能

Preparation, Characterization and CO Catalytic Oxidation Performance of Cu_xCe_1-xO_2-x/SBA-15/Cordierite Monolithic Catalysts

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs