Calcium ammine catalyst was prepared with metalcalcium, dehydrated liquid ammonia as raw materials, nano-silica as a carrier and acetonitrile and propylene epoxide as modifiers.
采用金属钙、脱水液氨、载体纳米二氧化硅及改性剂乙腈与环氧丙烷制备出氨钙体系催化剂。
2
Purpose - To synthesise calcium titanate with a perovskite structure as an anticorrosion pigment for metal protecting paints.
目的-采用具钙钛矿结构的钛酸钙合成用于金属保护漆的防腐颜料。
3
The metal elements such as sodium and calcium in catalytic cracking feed were poisonous to the catalyst.