Structure Control of V2O5/CNFs/Cordierite Monolith Catalyst and Its Catalytic Performance on NO Removal from Flue Gas
Structure Control of V2O5/CNFs/Cordierite Monolith Catalyst and Its Catalytic Performance on NO Removal from Flue Gas
复制标题
DOI：
10.3724/sp.j.1077.2012.11571
复制
发表时间：
2012
期刊：
影响因子：
12.8
通讯作者：
Wang Yan-li;Wang Xu-jian;Zhang Liang;Qiao Wen-ming;Liang Xiao-yi;Li Licheng
中科院分区：
文献类型：
--
作者：
Wang Yan-li;Wang Xu-jian;Zhang Liang;Qiao Wen-ming;Liang Xiao-yi;Li Licheng
采用化学气相沉积法在堇青石表面包覆Al_2O_3制备了纳米碳纤维。采用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线粉末衍射（XRD）和X射线光电子能谱（XPS）等技术，研究了堇青石基V2 O 5/CNFs催化剂的微观结构及其对NH3选择性催化还原NO的活性。制备的CNFs/堇青石整体复合材料的抗压强度为34.46 MPa，CNFs层厚度为0.74 μm。V2 O 5/CNFs/堇青石整体式催化剂在150 - 250℃温度范围内具有高的NO脱除活性。当CNF产率为12.5%、V2 O 5负载量为1%时，250℃时催化剂的NO转化率可达95%。
Carbon nanofibers (CNFs) were grown on Al2O3-coated cordierite monolith by chemical vapor deposi- tion. The microstructure of V2O5 catalyst supported on cordierite monolith with CNFs layer was investigated by us- ing 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%, re- spectively, the NO conversion of the catalyst could reach 95% at 250℃.