锆基纳米材料的气相制备及其对NOx的消除特性

锆基纳米材料具有特殊的结构和功能，在催化降解及催化剂载体、陶瓷增韧等领域具有广泛的应有前景。本研究以易溶或易升华的锆盐以及含氧、氮、磷物种为前驱物，选用气相法探索合成ZrO2、Zr3N4、Zr3P4等锆基纳米粒子及以其为主体的纳米复合物；通过调控前驱物配比、给料顺序等复合条件，获取锆基纳米材料的稳定化规律，探究气相水解（氨解、磷解）法对材料的形貌、尺寸及表面性质等的影响，获得最佳的合成条件及影响因素。利用气固相催化分析测试平台，监测并比较锆基纳米粒子及锆基复合纳米材料中O2-、N3-、P3-等催化活性成分在NOx等污染气体无害化处理体系中的催化活性。比较分析纳米材料复合前后、复合量、压片硬度、焙烧温度等变量对催化特性的影响，及时修正调整合成路线及条件，建立最优的催化活性与最优的合成条件之间的模式，进一步优化锆基纳米材料的合成路线，完善锆基纳米材料的气固相催化反应机理。

Zr-based nanomaterials have special structure and function and are applied in catalytic degradation and catalyst carrier, toughening ceramics and other fields,which have a broad prospect in application. In this study, soluble or easily sublimated zirconium salt and oxygen, nitrogen, phosphorus species are chosen as precursors to explore the synthesis of the Zr-based nanoparticles, such as ZrO2, Zr3N4, Zr3P4 and composite nanomaterials using vapor-phase hydro (aminolysis or phosphorus)-lysis method. The law of the stabilized zirconia composites nanomaterials will be achieved by regulating precursor ratio, feeding order and other conditions. The optimal synthesis conditions and factors would also be collected by exploring the impact of vapor-phase hydrolysis on the morphology, size and surface properties of materials. Using the gas-solid catalytic test platform, the catalytic activity of the catalytic active ingredients O2-、N3- and P3- in Zr-based nanoparticles or composite nanomaterials are monitored and compared during innocuous treatment of NOx and other polluting gases. The impact on catalytic properties by the variables, such as before and after compositing, composite volume, tablet hardness, calcination temperature will be compared. The synthetic route and conditions should be timely corrected and adjust. The optimal model of optimal catalytic activity between compositing conditions then would be established, the synthetic route Zr-based nanomaterials be further optimized and the mechanism of nanomaterials for gas-solid catalytic reaction be perfected.