论文部分内容阅读
研究了以硅藻土、锐钛型TiO2、Al2O3和高岭土为载体制备的负载型Ni催化剂催化对硝基酚加氢制备对氨基酚的活性。采用XRD与TPR技术表征了催化剂的结构与还原性能。负载型催化剂具有单一的对氨基酚选择性。NiO与载体硅藻土和锐钛型TiO2有弱的相互作用,制备的催化剂还原后有较高的催化活性。Al2O3和高岭土与NiO有较强的相互作用,抑制了还原后金属Ni的催化加氢活性。
The activity of p-aminophenol for hydrogenation of p-nitrophenol catalyzed by supported Ni catalysts prepared with diatomite, anatase TiO2, Al2O3 and kaolinite was studied. The structure and reduction performance of the catalysts were characterized by XRD and TPR techniques. Supported catalysts have a single para-aminophenol selectivity. NiO and support diatomaceous earth and anatase TiO2 has a weak interaction, the prepared catalyst has a higher catalytic activity after reduction. Al2O3 and kaolin have a strong interaction with NiO, which inhibits the catalytic hydrogenation activity of the metal Ni after reduction.