23. A new photoinitiator, 4-phenoxy benzophenone (PBZP), was synthesized and characterized using diphenyl ether and benzoyl chloride as raw material.
以二苯醚与苯甲酰氯为原料，合成了一种新型的激光光敏刺——4 -苯氧基二苯甲酮(PBZP)。
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24. Reaction thermodynamics of diphenyl carbonate (DPC) synthesis by the transesterification reaction from dimethyl carbonate and phenol is introduced.
介绍了碳酸二甲酯与苯酚酯交换合成碳酸二苯酯的反应热力学。
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25. Eleven solid quaternary complexes of rare earth perchlorate with diphenyl sulfoxide (L) and benzoic acid (L') have been synthesized and characterized.
本文首次合成并表征了高氯酸稀土与二苯基亚砜、苯甲酸的十一种四元配合物。
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26. But the GC/MS analysis showed that it is phenyl isocyanate. This may be due to neutral loss of aniline in the cleavage of diphenyl thiourea in GC/MS analysis.
27. Heating Method: (heat transfer) oil recirculation heating, biphenyl recirculation heating, electric heating of heat transfer oil, or electric heating of diphenyl.
加热方式：导热油循环加热、联笨循环、导热油电加热和联苯电加热可供选择。
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28. Diphenyl guanidine has been prepared by using of Fe2 O3 as catalyst and 70% ethanol as solvent, and simultaneously the by - product H2S is used to prepare thiourea.
本文提出了在70%乙醇溶剂中以氧化铁作为触煤合成二苯胍，同时回收副产硫化氢合成硫脲的联合制备方法。
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29. Scavenging activity of four natural flavonoids to 2,2-diphenyl-1-picrylhydrzyl free radical(DPPH) was studied by cyclic voltammetry and differential pulse voltammetry.
30. Scavenging activity of four natural flavonoids to 2,2-diphenyl-1-picrylhydrzyl free radical(DPPH) was studied by cyclic voltammetry and differential pulse voltammetry.
As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound. 异氰基化合物进一步二聚成二苯基碳化二亚胺，后者又聚合生成含氮杂环的多环芳烃。
