催速剂相关论文
In this paper, a procedure of pyrohydrolysis-spectrophotometric determination has been estahlished for chlorine in ores ......
采用催化转化法由天青石制取粗品SrCO3,经酸溶后采用综合净化法除去钡、钙等杂质,用碳铵与之作用生成高纯SrCO3成品.本方法具有转......