1. The research on the amino acid by dehydrogenation alkanolamine(s) in catalyst was recommended.
   介绍了国内外醇胺催化脱氢制备氨基酸的研究发展情况。
2. 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脱氢制备对伞花烃进行了研究并取得了理想结果。
3. 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(催化量)作脱氢试剂使2吡唑啉脱氢制备吡唑。
4. 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.
   摘要介绍合成邻苯基苯酚的几种主要工艺方法，对环己酮缩合脱氢法制邻苯基苯酚的合成方法及研究状况进行详细阐述。

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