The liquid phase oxidation of p -toluic acid at 190 ℃ in the presence of manganese acetate,cobalt actate and tetrabromoethane was studied.
研究了以、锰和四溴乙烷为催化剂,在190℃时,甲基苯甲液相氧化制苯二甲的过程。
The liquid phase oxidation of p -toluic acid at 190 ℃ in the presence of manganese acetate,cobalt actate and tetrabromoethane was studied.
研究了以、锰和四溴乙烷为催化剂,在190℃时,甲基苯甲液相氧化制苯二甲的过程。
声明:以上例句、词性分类均由互联网资生成,部分未经过人工审核,其表达内容亦不代表本软件的观点;若发现问题,欢迎向我们指正。