The mechanism for the formation of phenolic tars in the process for the preparation of diphenols by the hydroxylation of phenol using iron-based compositeoxides as catalyst was studied.
对铁基复合氧化物催化苯酚羟基化合成苯二酚反应过程中酚焦油的生成机理进行了研究。
2
The simulating study of the formation and inhibition of phenolic tars in the process of diphenols preparation by hydroxylation of phenol with iron-based compositeoxides as catalyst was conducted.
对铁基复合氧化物催化苯酚羟基化合成苯二酚反应过程酚焦油的生成反应进行了模拟研究。
3
The performances of Composite Electrodes in welding can be much improved by adding two or more rare earth oxides which are mutually completementary.