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The commercial process of cyclohexane oxidation to cyclohexanone and cyclohexanol shows low conversion, poor selectivity, high-energy consumption and environmental pollution. It is of great academic and practical importance to study and develop highly efficient and environmentally friendly catalytic cyclohexane oxidation processes.

现有的环己烷氧化制环己酮生产工艺，存在转化率低、选择性差、能耗高以及污染环境的缺点，研究和开发高效、环境友好的环己烷催化氧化工艺具有重要的理论意义和实用价值。

Catalytic dehydrogenation of cyclohexanol to cyclohexanone is an industrially important...

环己酮是几内酰胺生产工业中的重要中间体，同时环己酮还广泛用作有机溶剂、合成橡胶以及工业涂料等，是化学工业的一个重要产品。

The commercial processes of cyclohexane oxidation to cyclohexanone and cyclohexanol generally show many problems, such as low conversion, poor selectivity, complicated technology, high-energy consumption and environmental pollution. So it seems to be of great academic and practical interesting to study and develop highly efficient and environmentally friendly catalytic cyclohexane oxidation processes.

现有的环己烷氧化制环己酮和环己醇生产工艺普遍存在转化率低、选择性差、工艺复杂、耗能大和对环境污染严重等问题，这就使得研究和开发高效、环境友好的环己烷催化氧化工艺具有重要的理论意义和实用价值。

Catalytic dehydrogenation of cyclohexanol to cyclohexanone is an industrially important reaction in the manufacture of caprolactam, which is used as a material for the synthesis of nylon.

环己酮是几内酰胺生产工业中的重要中间体，同时环己酮还广泛用作有机溶剂、合成橡胶以及工业涂料等，是化学工业的一个重要产品。

In addition, the catalytic capability of five ferrocene aziridination complexes in cyclohexanone hydride reaction has also been studied.

此外，本论文还研究了五个二茂铁氮杂环类配合物在环己酮氢化反应中的催化性能。

The dominant techniques of cyclohexanone synthesis from cyclohexane by catalytic oxidation were introduced.

介绍了以环己烷为原料催化氧化合成环己酮的主要方法，分析了环己烷氧化采用的主要催化剂。

The structural characteristics, such as short bridges, more rigid ligand, larger dihedral angle and different bridging groups, had significant effects on the stability, catalytic activity and polymerization behavior.The polymerizations of cycloolefin were carried out by catalystsβ-diketonate titanium, respectively.

催化剂桥基长度的缩短、两茂环之间的二面角及立体刚性的增大、两桥联基团的结构差异等因素对催化剂的热稳性、聚合活性及共聚情况都有一定的影响。

Essential amino acid residues in diphtheria toxin catalytic domain were determined by quantum chemistry calculation and the enzymatic activities of mutant in the active-site were tested in order to provide high effective cytotoxin for target anticancer drugs.

通过量子化学计算确定白喉毒素分子催化区活性中心的关键氨基酸残基，评价其取代后的酶活性的改变，为导向性抗癌药物研究提供高效杀伤细胞工具。

The stability of V_2O_5 catalyst and the reason of catalytic deactivation were studied.

考察了催化剂的稳定性和催化剂失活的原因。

The factors which cause deactivation of catalysts are different because of the difference in the conditions of catalytic reactions.

合成甲醇的反应条件不同，造成催化剂失活的原因也有所不同。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。