查询词典 hydrogenation

The law of heat transfer and pressure drop of two-phase of kerosene-air mixture at heating, boiling and condensation is obtained, the investigation result provides important basis for design of heat exchanger and heating furnace in hydrogenation technology of oil refining industry.

通过本文的研究，得到了煤油在含有不同量的空气时的煤油空气混合物两相流在加热、沸腾和冷凝时的换热和压降规律，建立了计算关联式，为炼油工业加氢工艺中的各种换热器和加热炉的设计提供了重要依据。

Emphasis is placed on the industrial application of gamma scanning in tower operation and the neutron backscatter in the level detection of an industrial gas/liquid separator and a hydrogenation reactor.

对γ射线扫描技术和中子背散射技术的基本原理及其在石油化工装置中的主要应用进行了简要介绍。

In SDCLP, two coal gasifiers were used to provide hydrogen required for direct coal liquefaction and downstream oil hydrogenation processes.

阐述了神华煤炭直接液化项目的氢气需求和为提高氢气利用率采取的措施。

The catalyst under high temperature hydrolysis into fatty acids and glycerol, with the metal oxides can happen saponification reaction, Formation of metal soap and glycerin, but also for halide, sulfate, sulfonation, oxidation, hydrogenation, polymerization and pyrolysis reaction.

可在催化剂作用下高温水解成脂肪酸和甘油，与金属氧化物能发生皂化反应，生成金属皂和甘油，还可进行卤化、硫酸化、磺化、氧化、氢化、聚合、热解等反应。

The combination of these hydrides with some transition metal complexes exhibits high catalytic activity for the hydrogenation of olefins.

它们具有比一般市售碱金属氢化物高得多的反应活性，并能与过渡金属配合物组成高活性烯烃加氢催化。

In the fifth part, asymmetric synthesis of β,γ-trans-alkenyl α-amino esters was achieved by chiral phosphoric acid catalyzed transfer hydrogenation of β,γ-alkynyl α-imino esters. Utilizing Hantzsch ester as the hydrogen donor, both the alkyne and imine moieties of β,γ-alkynyl α-imino esters were reduced to yield β,γ-trans-alkenyl α-amino esters with up to 96% ee.

第五部分工作中，使用手性磷酸作为催化剂，Hantzsch酯作为氢源，β，γ-炔烃取代的α-酮酸酯亚胺中的炔键和亚胺官能团均被还原，以中等的收率和优秀的对映选择性（up to 96% ee）得到β，γ-反式烯烃取代的α-氨基酸衍生物。

Aiming at the over-standard problem of Mercaptans in sweetened gasoline after selective hydrogenation of catalytic cracking gasoline in the Refinery of Luoyang Division during sour crude processing, the influential factors are analyzed and corresponding countermeasures are put forward.

针对洛阳分公司在加工含硫原油过程中，选择加氢后的催化汽油进行脱臭后出现的硫醇硫超标问题，分析了影响硫醇硫超标的因素，提出相应的对策，使汽油质量得以明显改善。

Metal oxides which are present on the catalyst surface are converted in a conditioning step into metal sulphides, which provide the hydrogenation component of the bi-functional catalyst.

出现在催化剂表面的金属氧化物在预处理阶段转化为金属硫化物，该硫化物提供双功能催化剂的加氢成份。

An efficient method for the selective hydrogenation of a series ofα,β-epoxyketones toβ-hydroxyketones using catalytic amount of two sulfinyl analogues of NAD~+ model compounds is reported.

利用两个亚砜类辅酶NAD~+模型物的催化反应，实现了α，β-环氧酮向β-羟基酮的高效转化。

Part III: Catalytic hydrogenation ofα,β-epoxyketones toβ-hydroxyketones with two sulfinyl analogues of coenzyme NADH models.

第三部分：亚砜类辅酶NAD~+模型物催化氢化α，β-环氧酮生成β-羟基酮的反应。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48