【摘要】 通过阳极氧化法制备出多孔氧化铝板状催化剂载体,考察了不同水合条件对多孔氧化铝膜性能的影响,并通过TG、XRD、SEM和BET等分析手段研究了Al2O3/Al的晶态形成规律.实验结果表明,最佳水合温度为80℃,非晶态氧化铝发生反应生成AlOOH,经过500℃焙烧可以完全转化为γ-Al2O3.经过水合后制备的γ-Al2O3/Al板状催化剂载体在高温水蒸气氛围下晶型结构稳定性能好.更多还原

【Abstract】 The porous alumina as a plate catalytic support was prepared by anodization.Effects of hydration condition on the property of alumina supports were studied.The samples were characterized by XRD,SEM,BET and etc.to illustrate the Al2O3/Al forming mechanism.The results show that the best hydration temperature is 80℃,at which the amorphous alumina can be transformed into AlOOH,and become γ-Al2O3 after 500℃ calcination.Meanwhile,the monoliths catalytic carriers have a superior stability for crystalline structures in the steam atmosphere at high temperature.更多还原