ketene
英
美
n. 乙烯酮
双语例句
- Mathematic Modeling of Industrial Process of Producing Ketene by Cracking Acetic Acid; REVAMP OF GK-ⅲ CRACKING FURNACE IN ETHYLENE PLANT AT LIAOYANG PETROCHEMICAL COMPANY FOR ETHANE CRACKING
醋酸裂解制乙烯酮工业过程数学模拟辽化乙烯装置GK-Ⅲ型裂解炉改造 - Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.
以乙烯酮和丙酮为原料，用强酸性离子交换树脂代替浓硫酸作为催化剂，直接酯化合成乙酰丙酮的中间体乙酸异丙烯酯。 - Theoretical Investigation on Novel Donor-acceptor Materials with Organic Light-emitting Diodes Based on α-Cinnamoyl Cyclic Ketene Dithioacetals
基于α-肉桂酰环乙烯酮二硫缩酮的一类新型D-A有机发光材料的理论 - The structure of heterocyclic ketene aminals is peculiar and notable which possesses a large conjugation system in its molecule.
杂环烯酮缩胺是一类在有机合成方面有价值的多官能团反应中间体。 - AKD ( alkyl ketene dimer) emulsions offered good sizing, but rendered very poor ink hold-out.
AKD乳液提供了良好上胶度，但纸之托色效果甚差； - Ab initio studies on the reaction mechanism of [ 2+ 2] cycloaddition of ketene with ethylene and acetylene
烯酮与乙烯或乙炔的[2+2]环加成反应机理的从头计算研究 - Alkyl ketene dimmer These resins react with the cellulose to form crosslinks in the less crystalline areas of the cellulose.
烷基乙烯酮二聚物（纤维素反应型的耐久防水柔软剂）这些树脂能够在纤维素非晶区与纤维素发生反应产生交键。 - Ketenes, notably dimethyl ketene, readily undergo oligomerization and polymerization.
烯酮，特别是二甲基烯酮，很容易齐聚和聚合。 - Modification of AKD and Infrared Characterization of Its Products alkyl ketene dimmer
烷基烯酮二聚体改性及其产物的红外表征 - The effects of acylating agents, acetic anhydride and ketene on synthesis of linalyl acetate from linalool were studied.
阐述了乙酸酐和乙烯酮作为酰化剂对芳樟醇合成乙酸芳樟酯反应的影响； - A Theoretical Study of Mechanisms in the Photochemical Reactions of Forming Ketene After the α-Bond Rupture in Cyclohexanone
环己酮α键断裂生成烯酮的光化学反应历程的理论研究 - Photodissociation dynamics of ketene at 218 nm has been investigated using the velocity map ion-imaging method. Both angular and translational energy distributions for the CO products at different rotational and vibrational states have been obtained.
用离子速度成像方法研究了乙烯酮分子在218nm光解下的光解动力学，得到了光解产物CO的共振多光子电离谱，以及在不同振转态的角分布和平动能分布。 - The paper presents a review of the neutral sizing with alkyl ketene dimmer ( AKD). Some factors influencing AKD sizing are discussed. And the methods for determination of AKD in paper are also introduced.
介绍了几种测定纸页中AKD含量的方法，并对AKD的施胶机理和影响AKD施胶的因素作了简单总结。 - The paper presents a review of the neutral sizing with alkyl ketene dimmer ( AKD), AKD's property, its sizing mechanism, its hydrolization, and its emulsification. And the facts influencing the AKD sizing are also introduced.
介绍了AKD的性质，施胶机理，水解及其乳化和影响AKD施胶的因素。 - A composite film was prepared through the reaction of methylcellulose, polyamide, and alkyl ketene dimmer. Glycerol was used as a plasticizer.
以丙三醇为增塑剂，将甲基纤维素、聚酰胺与烷基烯酮二聚体反应后制备出甲基纤维素／聚酰胺复合膜。 - Ab Initio Study on the Paths of Photodissociation of Ketene
乙烯酮光解途径的从头算研究 - A New Method for the Synthesis of α-Acetyl Ketene Dithioacetals
α-乙酰基二硫缩烯酮的新合成方法 - Synthesis of Novel Phosphonyl/ S-methyl Ketene Thioacetals and N-Substituted Phosphonyl/ S-methyl Thiocarbonates under Microwave Irradiation
微波照射下膦酰基/硫甲基烯酮硫代缩醛和N-取代膦酰基/硫甲基硫代碳酸酯的合成 - Synthesis of polysubstituted pyrimidine from ketene dithioacetals by using K_2CO_3 catalyst Fourteen novel polysubstituted pyrimidine derivatives of four types were obtained by the designing synthesis, studies of the synthetic methods and chemical properties for them.
碳酸钾催化从烯酮二硫缩醛合成多取代嘧啶本文以2-氰基-3,3-二甲硫基丙烯腈（1a）为起始原料通过方法和性质研究共得到尚未见文献报道的四类多取代嘧啶14个化合物。 - The sizing performance of alkyl ketene dimmer ( AKD) in bamboo pulp was studied in this paper.
研究了AKD在竹浆中的施胶特牲。 - In this reaction, the first example of 1,3-addition to ketene was observed.
研究中，我们首次观察到了对烯酮的1,3-加成反应。 - By western medicine group pregnant three ketene capsule for treatment.
对照组采用西药孕三烯酮胶囊治疗。 - As an important organic chemical intermediate, Acetyl acetone is generally prepared by ketene method.
乙酰丙酮作为重要有机化工中间体，工业生产多采用乙烯酮法。 - The result obtained in this thesis has made contribution to the better understanding of heterocyclic ketene aminals.
本文的研究结果进一步丰富了人们对杂环烯酮缩胺的认识。 - As a wildly used organism, acetylacetone was prepared mainly by the absorption of ketene and thermal transition.
乙酰丙酮作为一种应用较为广泛的有机物，其制备的工艺多采用乙烯酮吸收和热转化的途径。 - The ketene was found act as a one-carbon component in the reaction to form a five-membered ring. 2.
在此反应中，烯酮体现出不寻常的反应活性，作为单碳组分参与了形式上的[4+1]反应，形成五员环。 - To develop green chemistry, we study systematically the application of commercially available, odorless and stable α-oxo ketene dithioacetals substituting for thiols in organic synthesis.
本论文以发展绿色化学为目的，系统地研究了经济易得、无气味、稳定的α-羰基二硫缩烯酮作硫醇替代试剂在有机合成中的应用。 - Isopropenyl acetate, an intermediate product of acetylacetone, was synthesized by acetone and ketene in the condition of the existence of strong acid catalyst.
作为生产乙酰丙酮重要的中间产物醋酸异丙烯酯（IPA），是由丙酮在强酸性催化剂作用下与乙烯酮发生吸收反应而得。 - The reaction of ketene and imine [ 2+ 2] cycloaddition to yield β-lactam is called Staudinger reaction.
烯酮和亚胺[2+2]环加成产生β-内酰胺的反应，被称作Staudinger反应。 - The current common synthetic method of β-lactams is through ketene and imine [ 2+ 2] cycloaddition reaction, which is also known as the Staudinger reaction.
目前合成β-内酰胺的通用方法是烯酮和亚胺进行[2+2]环加成反应，又称Staudinger反应。