水合草酸钡脱水过程的机理判别和动力学研究  

Identification of Mechanism and Investigation on the Kinetics of Thermal Dehydration of Barium Oxalate Hemihydrate

作　　者：李靖华[1] 张宁[1] 成庆堂[1] 

机构地区：[1]河南师范大学化学系,新乡453002

出　　处：《化学学报》1993年第6期550-555,共6页Acta Chimica Sinica

摘　　要：用等温热重法和线性升温热重法在氮气气氛中研究BaC_2O_4·0.5H_2O的脱水过程.运用判断机理的三步判别法对实验数据分析证明:该过程受随机成核和晶核随后生长机理控制.通过晶体结构分析对这种机理的正确性进行了验证.The thermal dehydration of BaC_2O_4·0.5H_2O in a dry nitrogen flow was studied by means of thermogravimetry both at the constant temperature and linear increasing temperature. According to the three-stage identifications method, the experimental data was analysed. The results show that the thermal dehydration of BaC_2O_4·0.5H_2O is dominated by the random nucleation and Subsequent lineal growth process. The crystal structure analysis show the mechanism is reasonable.

关 键 词：水合草酸钡 动力学 晶体结构 脱水 

分 类 号：O627.22[理学—有机化学]