摘要
以硝酸铝(Al(NO_(3))_(3)·9H_(2)O)为氧化剂,甘氨酸(C_(2)H_(5)NO_(2))为还原剂,硝酸钐(Sm(NO_(3))_(3)·6H_(2)O)为改性剂,通过溶液燃烧法合成了γ-Al_(2)O_(3)粉体。采用XRD、SEM、BET、TG-DTG等手段对产物进行表征,并分析探讨了焙烧温度、改性剂添加量对产物物相的影响。实验结果表明:在硝酸铝(Al(NO_(3))_(3)·9H_(2)O)与甘氨酸(C_(2)H_(5)NO_(2))的物质的量之比为3∶5,改性剂Sm(NO_(3))_(3)·6H_(2)O添加量为1%,焙烧温度为1025℃,焙烧时间为4 h的条件下可以制备具有较高热稳定性的γ-Al_(2)O_(3)粉体,且该粉体具有比表面积较大、结构稳定等特点,可以作为催化剂的载体。
Using aluminum nitrate(Al(NO_(3))_(3)·9H_(2)O)as the oxidizing agent,glycine(C_(2)H_(5)NO_(2))as the reducing agent,and samarium nitrate(Sm(NO_(3))_(3)·6H_(2)O)as the modifier,γ-Al_(2)O_(3) powders were synthesized by solution combustion method.The products were characterized by XRD,SEM,BET and TG-DTG.The effects of roasting temperature and modifier addition on the phase of the products were analyzed and discussed.The experimental results show that theγ-Al_(2)O_(3) powders with high thermal stability could be prepared under the molar ratio of aluminum nitrate(Al(NO_(3))_(3)·9H_(2)O)to glycine(C_(2)H_(5)NO_(2))of 3∶5,addition of modifier Sm(NO_(3))_(3)·6H_(2)O of 1%,roasting temperature of 1025℃,and roasting time of 4 h.And theγ-Al2O(3)powders have the characteristics of large specific surface area and stable structure,which can be used as the carrier of catalyst.
作者
王立明
贾雅薇
孟竺
付丽婷
吴静
宋丽娟
储刚
WANG Li-ming;JIA Ya-wei;MENG Zhu;FU Li-ting;WU Jing;SONG Li-juan;CHU Gang(School of Petrochemical Engineering,Liaoning Petrochemical University,Fushun 113001,China;Engineering Training Center,Liaoning Petrochemical University,Fushun 11300l,China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2023年第3期47-51,64,共6页
Rare Metals and Cemented Carbides
基金
国家自然科学基金项目(U1908203)。
