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中文摘要：
为了考察不同柱撑物对层柱黏土为载体的低温SCR催化剂性能的影响，分别选择钛氧化物、锆氧化物和铁氧化物为柱撑物质，得到不同的层柱黏土。采用浸渍法分别负载锰铈后得到相应催化剂。分别运用BET、XRD、H2．TPR、NH3．TPD对催化剂进行表征分析。并在固定床反应器上测试其低温SCR催化活性。结果表明3种层柱黏土制得催化剂的比表面积、孔体积、表面还原性和酸性与未进行柱撑的黏土制得的催化剂相比均有明显提高。而Mn．Ce／Zr-PILC的SCR脱硝活性最佳，在240~C时，脱硝活性达到90％。实验结果表明，催化剂的活性受比表面积、表面酸性和还原性等因素的共同制约，其中，催化剂表面的酸性起到的作用更加明显。
英文摘要：
To investigate the effect of different pillar materials on low-temperature de-NO activity of PILCs, the study attempted to pillar the clay with three different kinds of metal oxides （titanium oxides, zirconium oxides, iron oxides） to obtain different kinds of PILCs, then load them with manganese and cerium oxides using the method of impregnation. BET, XRD, H2-TPR and NH3-TPD characterization methods were used to study the property-activity relationship of the catalysts, and evaluate the low temperature SCR activity of the catalysis. The results indicate that the specific surface area, pore volume, deoxidization property and surface acidity of the catalysts derived from PILCs are all improved compared with those derived from the clays without pillared. Mn-Ce/Zr-PILC is proved to be the most efficient in the SCR of de-NO with NH3, its de-NO activity is as high as 90% at 240℃ According to the test results, the de-NO activities of the catalysts are affected by the combination of the specific surface area, surface acidity and reduction property, among them, the surface acidity is the most important.
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