The mechanism for the formation of phenolic tars in the process for the preparation of diphenols by the hydroxylation of phenol using iron-based composite oxides 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。
The simulating study of the formation and inhibition of phenolic tars in the process of diphenols preparation by hydroxylation of phenol with iron-based composite oxides 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。
The performances of Composite Electrodes in welding can be much improved by adding two or more rare earth oxides which are mutually completementary.
复合电极是在钨中添加了两种或更多种的稀土氧化物，各添加物互为补充，相得益彰，使其焊接性能更出众。
The technology for purity improvement of composite re oxides in south ore deposits is studied.
研究了提高南方稀土混合氧化物纯度的工艺。
The flame retardant of the flexible PVC treated with composite metal oxides was studied by oxygen index (OI) and differential thermal analysis;
通过氧指数检测及热重分析考察了复合金属氧化物添加量对软PVC阻燃性能的影响；
The flame retardant of the flexible PVC treated with composite metal oxides was studied by oxygen index (OI) and differential thermal analysis;
通过氧指数检测及热重分析考察了复合金属氧化物添加量对软PVC阻燃性能的影响；
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