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.
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℃.
参考文献
[1] | |
[2] | |
[3] | |
[4] | |
[5] | |
[6] | |
[7] | |
[8] | |
[9] | |
[10] | |
[11] | |
[12] | |
[13] | |
[14] | |
[15] | Su J H, Liu Q Y, Liu Z Y, et al. Honeycomb CuO/Al2O3/Cordierite catalyst for selective catalytic reduction of NO by NH3&ndash |
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