CaSO_4氢气下还原分解的热重研究  

THERMOGRAVIMETRIC STUDY ON THE REDUCTIVE DECOMPOSITION OF CALCIUM SULFATE WITH PURE H_2 AT HIGH TEMPERATURE

作　　者：韩翔宇[1] 陈皓侃[1] 李保庆[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原硕士生030001

出　　处：《煤炭转化》2000年第2期72-75,共4页Coal Conversion

基　　金：国家重点基金基础研究发展规划项目!(G1999022102)

摘　　要：在 TG— 1 51加压热天平上 ,对常压和加压氢气气氛下 Ca SO4 的分解反应进行了研究 ,并采用 XRD技术对不同反应条件下的产物进行了分析测试 .结果表明 :在氢气还原气氛下升高温度和压力都导致 Ca SO4 还原分解速率加快 ,Ca SO4 分解产物主要是 Ga S;在 1 0 0 0℃时 Ca SO4和 Ca S之间可以发生固 -固反应生成 CaThe reductive decomposition of calcium Sulfate utilizing pure hydrogen was investigated using a high pressure thermogravimetric analyzer(TG—151).The X ray diffraction technique(XRD) was used to identify the chemical species of the reduced products.The results showed that the process of decomposition of CaSO 4 was dramatically affected by temperature and pressure.The main product of the reaction was CaS.The solid solid reaction between CaSO 4 and CaS was occurred at high temperature to form CaO.

关 键 词：还原分解 XRD 硫酸钙 氢气 热重分析 煤 燃烧 

分 类 号：TQ530.2[化学工程—煤化学工程] TQ534