TGA

Three maceral groups,vitrinite,fusinite and exinite,seperated from Britain coal and their gasification kinetics in CO2 have been investigated by TGA at the pressure of 0.

英国煤显微组分分离富集，得到镜质组、丝质组和稳定组三种富集物。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

巯基乙酸合成工艺比较研究,认为硫氢化钠法和硫代硫酸钠法生产成低,适宜于选矿用巯基乙酸生产,而硫脲法可得到较高浓度巯基乙酸。