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

1.介绍了国内外醇胺催脱氢制备氨基酸的展情况。

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

2.对工业双戊烯气相催脱氢制备对伞烃进行了并取得了理想结果。

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.

3.在硫酸中用(催量)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.

4.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状况进行详细阐述。