英汉例句

• the advantage of catalytic hydrogenation over chemical reduction is that the product has higher purity quotient and is separated more easily.

  与化学还原方法相比催化氢化的优点在于产品纯度高，易分离。

• the superiority of catalytic hydrogenation reducing to iron and sodium sulfide reducing is showed in both increasing yield and decreasing wastes.

  对比说明了加氢法在提高产品收率、减少三废方面明显优于铁粉法和硫化钠法。

• the recent progress of the chiral ligands-rhodium complexes in asymmetric catalytic hydrogenation were reviewed in this paper.

  综述了近几年来手性配体与铑的配合物在不对称催化氢化研究的新进展。

• though the oxidation stability of fcc diesel can be partly increased by using catalytic hydrogenation method, the cost of this technology is too high.

  采用柴油加氢技术尽管可以解决一部分问题，但生产成本较高。

• the future study on catalytic hydrogenation of rosin will mainly be concentrated on the preparation of new catalysts with higher activity and selectivity to further lower pressure and temperature.

  今后对松香催化加氢反应的研究主要是研制具有更高活性和选择性的新型催化剂，以进一步降低温度和压力。

• conjugated unsaturation of abietic resin acids can be removed through catalytic hydrogenation to overcome the shortcomings of oxidation and color degradation in rosin.

  将松香催化加氢可去除枞酸型树脂酸的共轭不饱和性，克服其易于氧化变色的缺点。

• catalytic hydrogenation with organic polymer-metal complexes is reviewed. these complexes are formed from soluble or insoluble organic polymers with o, n, p ligands and rh, pd, pt metallic atoms.

  论述了各种带有氮、氧、磷等配位基团的可溶性和不溶性高分子与铑、钯、铂等贵金属配位后对氢化反应的催化作用。

• the present invention relates to processes for the catalytic hydrogenation of aromatic amines to their acyclic counterparts using a ruthenium catalyst on a lithium aluminate support.

  本发明涉及用在铝酸锂载体上的钌催化剂将芳胺催化氢化为其相 应的脂环族化合物的方法。

• moreover, catalytic hydrogenation can be used to the reduction of a variety of organic compounds, such as nitro, carbonyl, amino, aromatic and heteroaromatic compound, hydroxy group and carboxy group.

  此外，它除了还原双键以外可以用来还原各种不同的有机化合物，如：硝基、羰基、氨基、芳香族及杂环化合物、羟基、羧基。

• methods: the catalytic hydrogenation of d glucose and n octylamine in situ.

  方法：采用葡萄糖与正辛胺原位催化加氢制备的正交试验。

• four preparation methods for aromatic amine were reviewed in the paper: reduction of metals, catalytic hydrogenation reduction, hydration hydrazine reduction and electro-chemical reduction.

  综述了还原芳香族硝基化合物制备芳胺的主要方法，包括催化加氢法、金属还原法、水合肼还原法、电化学还原法等。

• the bleached natural shellac product with low chlorine content was prepared by means of catalytic hydrogenation of the bleached shellac in the presence of ni-fe binary-metal catalyst and hydrogen.

  制备和表征了在食品及制药业中广泛使用的天然低氯漂白紫胶。

• the fatty sec-amines can be directly prepared by the catalytic hydrogenation of the fatty nitriles, using ammonia synthesis gas instead of pure hydrogen.

  由氨合成气代替纯氢气使脂肪腈加压催化胺化，可一步制得双脂肪烃基仲胺。

• objective to optimize the process of catalytic hydrogenation of 3,4-dichloronitrobenzene.

  目的优化3，4-二氯硝基苯催化加氢工艺。

• using catalytic hydrogenation to remove organic chlorides in combination with adsorption to remove inorganic chlorides could effectively reduce the negative effects of chlorides.

  目前主要采用催化加氢技术脱除有机氯化物，结合无机氯吸附脱除技术，可以减少氯化物的不良影响。

• synthesis of o phenylenediamine from o nitroaniline by catalytic hydrogenation at lower pressure was studied.

  以邻硝基苯胺为原料，采用低压催化加氢还原技术合成邻苯二胺。

• the research progress of supported catalysts for asymmetric catalytic hydrogenation was reviewed.

  综述了近年来不对称催化氢化反应中固载催化剂的研究进展。

• resultsthe optimal design and operation of the fixed tube array reactor for catalytic hydrogenation of aniline was realized.

  结果实现了苯胺催化加氢制环己胺列管式固定床反应器的优化设计与操作。