A continuous process for the dinitration of alkyl-substituted derivatives of phenol and aniline, using nitric acid substantially free of sulphuric acid, characterised in that the dinitration is conducted in a single step in a tubular reactor in the presence of a catalytically-effective quantity of a catalyst capable of reacting with the nitric acid to form nitrous acid in situ.
一种使用基本上不含
硫酸的
硝酸对
苯酚和
苯胺的烷基取代衍
生物进行二硝化的连续工艺,其特征在于,二硝化是在管式反应器中,在催化有效量的催化剂存在下,一步完成的,催化剂能够与
硝酸反应,在原位生成
亚硝酸。