查询词典 reaction

A-Methylnaphthalene contains a methyl group, which is a strong donor group, so the reaction of a-methylnaphthalene with C14 AOS acid had a higher conversion of aromatic than did the reaction of benzene with C14 AOS acid. After alkylaryl sulfonic acid is formed, it will continue to react with another AOS acid to rapidly produce dialkylaryl disulfonic acids owing to the electron- donating effect of the long alkyl chain in the alkylaryl sulfonic acid molecule.

a-Methylnaphthalene包含一个甲基集团，这是一个强大的捐赠团体，所以 a-methylnaphthalene反应出了与C14酸更高的转换的反应比苯与C14活性氧酸。alkylaryl磺酸为后形成，它将继续与另一出酸 dialkylaryl disulfonic迅速产生的电子-酸捐赠的长期效果在alkylaryl烃链磺酸分子。

It showed that the ammonium ferric sulfate dodecahydrate was an excellent catalyst,the yield of the n-butyl lactate could reach over 95.0% under molar ratio of n-butyl alcohol and lactic acid 2.25∶1,the reaction temperature of 110～125℃,reaction time of 1.5 h and amount of the ammonium ferric sulfate dodecahydrate catalyst of 2.5%.

实验表明：NH4Fe(SO4)212H2O是合成乳酸正丁酯的良好催化剂。最佳反应条件为：醇酸物质的量比2.25∶1，催化剂的用量为反应物料总量的2.5％，酯化反应时间为1.5 h，反应温度110～125℃，酯化率可达95.0％。

Hydrocracking tests of Canadian oil sand bitumen, Saudi Arabian heavy vacuum residue and model compound 1 -pheny1 dodecane were carried out in a batch autoclave reactor. The reaction conditions were as follows: pressure 5.0 MPa, temperature 410-430℃, reaction time 0-60 min.

采用间歇式高压釜反应器研究了加拿大油砂沥青和沙特重质减压渣油及其模型化合物十二烷基苯的加氢裂化反应，实验条件为5.0MPa、410—430℃、0-60min。

The process industrial synthsis of tert-dodecyl mercaptan from dodecylene and hydrogen sulfide with aluminium trichloride as catalyst was introduced, which consists of four units including the preparation of catalyst, purification of raw dodecylene, additive reaction and separation of reaction product.

介绍了以无水三氯化铝络合物为催化剂，十二烯和硫化氢直接加成法生产叔十二烷基硫醇的工业试验工艺。

Solid superacids SO~2-_4/TiO_2-Al_2O_3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene,which were pretreated before esterifying reaction.

考察了催化剂用量、异辛醇与混合酸的质量比、反应时间等因素对酯化反应的影响，确定了较佳的反应工艺条件：m∶m∶m=0。

Solid superacids SO(superscript 2- subscript 4)/TiO2-Al2O3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene, which were pretreated before esterifying reaction.

以均四甲苯氧化反应副产物预处理后得到的混合酸和异辛醇为原料，在固体超强酸SO(上标 2-下标 4)/TiO2-Al2O3作用下进行合成混合酯的研究。

Solid superacids SO~2-_4/TiO_2-Al_2O_3 were prepared and used to catalyze the esterfication of iso-octyl alcohol and by-products in oxidization reaction of durene,which were pretreated before esterifying reaction.

考察了催化剂用量、异辛醇与混合酸的质量比、反应时间等因素对酯化反应的影响，确定了较佳的反应工艺条件：m∶m∶m=0.01∶3.18∶1，反应时间为3 h，在此反应条件下预处理后的混合酸转化率可达到99.9%。

The anode is the catalyst and a reaction field for electrocatalysis reaction.

阳极既是电催化合成过程的催化剂，又是电催化反应进行的场所。

The types, attributes, generation mechanism and enzyme activity of eliminative system of active oxygen species in plant are presented in this paper. In addition, the possible function of active oxygen species that may contribute to disease resistance and the difference of active oxygen species between compatible reaction and incompatible reaction in plant- pathogen interaction are discussed. And the paper commented on the relationships among the aspects talked above.

本文介绍了植物与病原物相互作用过程中活性氧的类型、性质以及活性氧的产生机制和清除系统酶活性；重点讨论在植物与病原体相互关系中活性氧的可能作用，以及植物－病原物亲和性互作与非亲和性互作之间在这方面的差异并对以上几个方面之间的关系进行了评述。

Its mechanism is the use of anthraquinone in alkali conditions off proton surface forming 10 more stable carbon anion face, but because carbon anion and oxygen ion exist between testosterone and enolate type each other changes, cause reaction product complex, at least five, reaction selectivity, product yield, separation difficulties, and product purity is not high, therefore, using the type and quantity of alkali, phase transfer catalyst type, solvent, to optimize the selection process conditions so as to improve the yield target product.

其机理是利用蒽酮在碱存在的条件下脱去氢质子面形成10位较稳定的碳负离子面进行，但是因为碳负离子和氧负离子之间存在酮式和烯醇式的互变，导致反应复杂，产物至少有五种，反应选择性差，产物分离困难，产率低，且产品纯度不高，因此，利用对碱的种类和量的多少，相转移催化剂的种类，反应溶剂的选择，来优化反应工艺条件从而提高目标产物的产率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。