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用微波法,水热法和微波水热法合成NiCoPrLa类水滑石,并用XRD,TG,TPO,TPR,TPD和FT-IR等对NiCoPrLa类水滑石的晶相结构、热稳定性及相应的衍生复合氧化物的晶相结构、还原性能、吸附性能和抗积碳性能等进行了表征,同时以乙醇水蒸气重整制氢为探针反应考察了制备方法对NiCoPrLa类水滑石的衍生复合氧化物的初活性和选择性的影响.结果表明,制备方法影响类水滑石的结构和热稳定性,水热法制备的类水滑石结晶度较好,微波水热法制备的类水滑石具有较好热稳定性,其中微波水热法所制备的类水滑石衍生复合氧化物具有较好的催化活性和抗积炭性能,在350℃温度下乙醇转化率达到86%.
The NiCoPrLa hydrotalcites were synthesized by microwave, hydrothermal and microwave hydrothermal methods. The crystal structure, thermal stability and corresponding derivatization of NiCoPrLa hydrotalcites were characterized by XRD, TG, TPO, TPR, TPD and FT- The crystal structure, reduction, adsorption and anti-carbon deposition properties of the composite oxides were characterized. At the same time, the production of NiCoPrLa hydrotalcite-derived composite oxides by ethanol steam reforming was investigated. .The results show that the preparation method has the good effect on the structure and thermal stability of hydrotalcite-like hydrotalcite-like hydrotalcite-like hydrotalcite-like hydrotalcite-like hydrotalcite prepared by microwave hydrothermal method is better Thermal stability. The hydrotalcite-like composite oxide prepared by microwave hydrothermal method has good catalytic activity and anti-carbon deposition performance, and the conversion of ethanol reaches 86% at 350 ℃.