Regioselectivities of nitration of toluene with nitric acid in the presence of phosphomolybdic acid catalyst prepared under different calcination temperatures were investigated.
英
美
- 制备了钼磷酸催化剂,研究了在不同焙烧温度及溶剂存在下,对甲苯一硝化产物中的对位选择性。