热重法确定MMH微晶中各种水分的相对含量  

Determination of water type and relative content in mixed metal hydroxide micro crystal by thermoanalysis

作　　者：杨光胜[1] 樊世忠[2] 

机构地区：[1]中国石油天然气总公司勘探局 [2]石油勘探开发科学研究院

出　　处：《钻井液与完井液》1996年第5期5-8,共4页Drilling Fluid & Completion Fluid

摘　　要：借助热分析仪对MMH微晶进行了TG和DTG分析,研究了MMH微晶中各种水分的相对含量。提出MMH微晶中存在4种水分,即自由水、松散吸附水和紧密吸附水、结晶水和羟基水,给出了MMH微晶的完整表达式,即 MgAl_(0.965)(OH)_(4.75)Cl_(0.145·1.70)H_2O。The relative content of water in mixed metal hydroxide (MMH) was analyzed by thcrmo-gravimetry and differential thermogravimeiry methods. It is shown that four kinds of water are existing in MMH micro-crystal, including free water, adsorbed water, crystal water, hydroxy water. The expression formula of MMH are given.

关 键 词：组成分析 热分析 MMH 钻井液 微晶 

分 类 号：TE254[石油与天然气工程—油气井工程]