查询词典 catalytic

Preparation of pyruvate can be achieved by chemical catalytic synthesis, microbial fermentation and biocatalysis.

丙酮酸的生产方法主要有化学催化合成法、微生物发酵法和生物催化法。

Synthesis of pyruvic acid from lactic acid by catalytic oxidation with oxygen was studied. The effect of catalyst composition, amount of catalyst and oxygen, reaction temperature and time on product yield was investigated and the optimum conditions were found.

由于丙酮酸的分子中同时具有羰基和羧基两个官能团，因而反应中心多而显出比一般化合物更为重要和特殊的化学性质，已引起越来越多的化学工作者的重视。

In the course of the reduction of 2, 4-diamino-5-methyl-6-nitro quinazoline instead of using 〓 catalytic hydrogenation was used for improving the yield.

改进了原合成路线中的〓〓还原的方法，采用催化氢化的方法（催化剂为5％Pd/C），使反应的产率接近8O％。

Experimental results indicated that the presence of copper could strengthen the catalytic ability of quinoline on white oil oxidation.

氧化安定性是润滑油基础油的一项重要指标，基础油的化学组成与其氧化安定性密切相关，尤其是硫氮化合物对基础油的氧化有显著的影响。

As excellent sensitizers, porphyrins are used extensively in the fields of photochemistry, catalytic-chemistry, photoelectrochemistry, radiochemistry and the diagnosis and treatment of cancer et al..

作为一种优良的光敏剂，卟啉化合物在光化学、催化化学、光电化学、放射医学、微量元素测定、癌症的诊断和治疗等领域被广泛应用，受到科技工作者的普遍关注和重视。

PCI engineers are now working on developing catalytic ignition solutions for a broad range of gas turbine and reciprocating engine applications.

的PCI工程师目前正在开发的催化点火的解决方案广泛的燃气涡轮发动机和往复应用。

Sulfur dioxide removal from flue gas by catalytic oxidation containing transitional metal ions in aqueous solution has become an important research aspect in the sort of reclaimable desulfurization techniques, usually in which main byproduct H2SO4 is produced.

铁屑法烟气脱硫工艺及Fe催化氧化S动力学研究铁屑，烟气

Simulation ; Dynamic model ; Catalytic cracking ; Residuum oil

仿真模拟；动态模型；催化裂化；重油

The feeding System of the heavy oil catalytic cracking unit with a capacity of 600,000 t/a in Shengli Petrochemical Plant was modified in order to meet the requirements of atmospheric residuum processing.

为了适应加工常渣的需要，胜利石油化工总厂 60× 1 0 4t/a重油催化裂化装置，对进料系统进行改造，采用UPC鼓泡型喷嘴和分段进料，改善了原料油的雾化效果，降低蒸汽的用量，改善了产品分布，提高汽油产率 3 。2 3 %、轻油收率 0 。63 %，提高经济效益 1 92 9.2万元/a。

Firstly, resorcinol was used as a model compound to prove the feasibility of supported Pd catalyst system for catalytic transfer hydrogenation.

首先，本文以间-苯二酚为模型物，考察了负载Pd系催化剂在催化转移加氢反应中的可行性。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷