Characterization and Analysis on the Thermal Transformation of Boehmite Synthesized by Yoldas Method

摘要：

　　The boehmite (AlOOH) sol derived from aluminium isopropoxide was synthesized by Yoldas method.The physicochemical process and phase transition of AlOOH were investigated by TG-DSC,N2 adsorption-desorption,XRD and TEM.The results showed that upon heating,AlOOH lost the physicsorbed water first,and then lost the chemisorbed water at 242 ℃,and the dehydroxylation occurred at 361 ℃.The BET surface area,total pore volume and pore diameter increased,since the waters were lost.The orthorhombic AlOOH transformed to the cubic γ-Al2O3 at 361 ℃,the cubic η-Al2O3 appeared after 484 ℃,the monoclinic θ-Al2O3 and rhombohedral α-Al2O3 appeared after 1026 ℃,and it totally turned into α-Al2O3 at 1237 ℃.

关键词： AIOOH Thermal transformation N2 adsorption-desorption TG-DSC XRD TEM

作者: SU Qiucheng ZHANG Shaohong CHEN Peili LI Xinjun FU Juan MA Longlong

作者单位: Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China;Graduate Uni Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China

会议类型: 国际会议

会议名称: 2012 2nd international Conference on Materials Science and Information Technology(2012第二届材料科学与信息技术国际会议)(MSIT2012)

会议地点: 西安

会议语种:英文

页码: 3-7

在线出版日期: 2012-08-24（万方平台首次上网日期，不代表论文的发表时间）