V2O5/CNFs/蜂窝状堇青石催化剂的结构控制及其烟气脱硝性能

doi:10.3724/SP.J.1077.2012.11571

无机材料学报 ›› 2012, Vol. 27 ›› Issue (8): 800-806.DOI: 10.3724/SP.J.1077.2012.11571 CSTR: 32189.14.SP.J.1077.2012.11571

V₂O₅/CNFs/蜂窝状堇青石催化剂的结构控制及其烟气脱硝性能

王艳莉, 王绪建, 詹亮, 乔文明, 梁晓怿, 凌立成

(华东理工大学化学工程联合国家重点实验室, 上海 200237)

收稿日期:2011-09-07 修回日期:2011-12-05 出版日期:2012-08-20 网络出版日期:2012-07-09
作者简介:王艳莉(1975-), 女, 博士, 副教授. E-mail: ylwang@ecust.edu.cn
基金资助:
国家自然科学基金(20806024、50672025、50730003、51002051); 中央高校基本科研业务费专项基金(WA1014016); 国家863重点项目(2008AA062302)

Structure Control of V₂O₅/CNFs/Cordierite Monolith Catalyst and Its Catalytic Performance on NO Removal from Flue Gas

WANG Yan-Li, WANG Xu-Jian, ZHAN Liang, QIAO Wen-Ming, LIANG Xiao-Yi, LING Li-Cheng

(State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China)

Received:2011-09-07 Revised:2011-12-05 Published:2012-08-20 Online:2012-07-09
About author:WANG Yan-Li. E-mail: ylwang@ecust.edu.cn
Supported by:
National Natural Science Foundation of China (20806024, 50672025, 50730003, 51002051); Fundamental Research Founds for the Central University (WA1014016); 863 program (2008AA062302)

摘要/Abstract

摘要： 采用化学气相沉积法, 在涂层Al₂O₃的蜂窝状堇青石表面生长纳米碳纤维(CNFs), 通过负载V2O5催化剂, 制成低温蜂窝状脱硝催化剂. 采用SEM、TEM、XRD和XPS等分析方法, 对所制催化剂的物化性质及其脱硝性能进行了分析. 研究结果表明, 当CNFs在堇青石表面的生长厚度为0.74 μm时, 所制CNFs/堇青石载体的压缩强度达34.46 MPa; 在150~250℃范围内, V₂O₅/CNFs/蜂窝状堇青石催化剂表现出较高的低温脱除NO活性, 其中当CNFs的生长量为12.5%、V2O5担载量为1%时, 在250℃下NO的转化率达95%左右.

关键词: 蜂窝状堇青石, 纳米碳纤维, 脱硝, 催化剂

Abstract: Carbon nanofibers (CNFs) were grown on Al₂O₃-coated cordierite monolith by chemical vapor deposition. The microstructure of V₂O₅ catalyst supported on cordierite monolith with CNFs layer was investigated by using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscope (XPS) techniques, as well as its activity for the selective catalytic reduction (SCR) of NO by NH3. The compressive strength of prepared CNFs/cordierite monolith composite was 34.46 MPa and the thickness of CNFs layer was 0.74 μm. The V₂O₅/CNFs/cordierite monolith catalysts had high NO removal activity in the temperature range of 150-250℃. When the CNFs yield and V₂O₅ loading were 12.5% and 1%, respectively, the NO conversion of the catalyst could reach 95% at 250℃.

Key words: cordierite monolith, carbon nanofibers, NO removal, catalyst

中图分类号:

TB34

王艳莉, 王绪建, 詹亮, 乔文明, 梁晓怿, 凌立成. V₂O₅/CNFs/蜂窝状堇青石催化剂的结构控制及其烟气脱硝性能[J]. 无机材料学报, 2012, 27(8): 800-806.

WANG Yan-Li, WANG Xu-Jian, ZHAN Liang, QIAO Wen-Ming, LIANG Xiao-Yi, LING Li-Cheng. Structure Control of V₂O₅/CNFs/Cordierite Monolith Catalyst and Its Catalytic Performance on NO Removal from Flue Gas[J]. Journal of Inorganic Materials, 2012, 27(8): 800-806.

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V₂O₅/CNFs/蜂窝状堇青石催化剂的结构控制及其烟气脱硝性能

Structure Control of V₂O₅/CNFs/Cordierite Monolith Catalyst and Its Catalytic Performance on NO Removal from Flue Gas

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