The research on the amino acid by dehydrogenation alkanolamine(s) in catalyst was recommended.

介绍了国内外醇胺催化氢制酸的研究发展情况。

Preparation process of p cymene with gas phase catalytic dehydrogenation of industrial dipentene was studied and the following results were obtained.

对工业双戊烯气相催化氢制对伞烃进行了研究并取得了理想结果。

Pyrazole has been prepared through the dehydrogenation of 2 pyrazoline in which catalytic amonts of sodium iodide acts as dehydrogenation agent in sulfuric acid.

在硫酸中用碘化钠(催化)氢试剂使2吡唑啉氢制吡唑。

The main synthetic methods of o-phenylphenol were reviewed.The method and research status of dehydrogenation to o-phenylphenol after cyclohexane condensation reaction were discussed detailedly.

摘要介绍合成邻苯苯酚的几种主要工艺方法，对环己酮缩合氢法制邻苯苯酚的合成方法及研究状况进行详细阐述。