ring-opening reaction
英 [rɪŋ ˈəʊpənɪŋ riˈækʃn]
美 [rɪŋ ˈoʊpənɪŋ riˈækʃn]
网络 开环反应
双语例句
- Synthetic reactions of hyperbranched polymers included condensation reaction, addition reaction, ring-opening reaction, grafting reaction, etc.
超支化聚合物的合成反应主要有缩聚反应、加成反应、开环聚合、接枝反应等。 - At the same time, the mechanism about the ring-opening reaction and aminolysis reaction has been investigated and the experimental results in first step reaction which the main product is 1-Chloro-2-propanol but 2-Chloro-1-propanol have been explained rationally.
同时，提出了PO开环反应及2-氯-1-丙醇氨解反应的反应机理，合理地解释了第一步反应中，反应主要产物是1-氯-2-丙醇，而不是2-氯-1-丙醇的实验结果。 - Studies of the Ring-opening Reaction of Epoxy Phenolic Resin with Triethylamine Hydrochloride to Prepare Water Soluble and Photosensitive Polymer
用三乙胺盐酸盐对酚醛环氧树脂开环合成水溶性感光高分子的研究 - A simple procedure based on gelatification, promoted by the ring-opening reaction of propylene oxide, was proposed for the synthesis of alumina, in which hydrated aluminium nitrate ( Al ( NO3) 3 · 9H2O) was mixed with propylene oxide and gelated in ethanol solvent.
以水合硝酸铝（Al（NO3）3·9H2O）为前驱体，通过乙醇介质中环氧丙烷的开环反应促使形成了透明的块状氧化铝凝胶。 - The effects of material ratio and reaction time on ring-opening reaction, along with the effects of ( reaction) temperature, reaction time, the dosage and concentration of sodium hydroxide on ring-closure reaction were ( investigated) by chemical analysis and infrared spectrometry.
采用化学分析及红外光谱分析方法研究了反应物料配比、反应时间对开环反应的影响及反应温度、时间与氢氧化钠的用量和浓度对闭环反应的影响。 - It has been shown that the ring-opening reaction of bisphenol A with epichlorohydrin at the presence of quaternary ammonium salt, is a second-order reaction and the followed ring-closure reaction is a first-order reaction.
结果表明，在季铵盐存在下，双酚A与环氧氯丙烷的开环反应为二级反应，而第二步的闭环反应为一级反应。 - Ring-opening reaction was conducted with 92.00 g octamethylcyclotetrasiloxane ( D_4) and KOH under N_2 protection at 120 ℃ for 1 h.
92.00g八甲基环四硅氧烷（D4）在碱性条件下，120℃，N2保护，开环反应1h； - Study on Quantum Chemistry of the Ring-opening Reaction Mechanism for 2-N-( ethyl) imido-4-N, N-dimethyl-oxetene
2-N-（乙基）亚胺基-4-N，N-二甲基-氧杂环丁烯开环反应机理的量子化学研究 - FTIR results show that the glycosidation reaction is accompanied by ring-opening reaction and degradation reaction.
FTIR谱图表明，淀粉与十二醇进行了苷化反应生成淀粉十二烷基苷，同时还发生了降解反应、开环反应。 - Ring-opening Reaction of Terminal Epoxides Catalyzed by Substituted Guanidine
胍催化下环氧化合物的开环反应 - Its properties have been introduced simply in this paper: and four ring-opening polymerization methods including the mechanism and reaction features have been reviewed in details.
本文论述了聚己内酯合成的简要发展过程及其性能，重点阐述了四种开环聚合法、聚合机理及其反应特性。 - The three cyclic carbonate monomers were ring-opening polymerized in bulk in the case of the catalyst Al ( O iBu) 3, monomer-to-catalyst ratio of 100 and reaction time of 16 hours.
以三异丁氧基铝为催化剂，单体/催化剂摩尔浓度比为100，反应时间16h，在190℃或210℃下本体开环聚合，对它们的开环聚合进行了初步的研究。 - Ring-opening Reaction on Epoxy-activated Resin
环氧基活化凝胶的开环反应 - Theoretical Study on the Ring-opening Reaction Mechanism of Two Monocycle-β-lactam Antibiotics under Basic Conditions
碱性条件下两种单环β-内酰胺抗生素开环反应机理的理论研究 - Ring-opening Reaction of Methyloxirane in HCl Solutions
环氧丙烷在盐酸中开环反应的机理 - NMR monitoring technique was applied to investigate the following ring-closure reaction under acidic and basic conditions. It was proposed that there underwent a mechanism as first by a lactone ring-opening then followed by a dehydrating cyclization reaction.
采用核磁共振跟踪对其在酸、碱性条件下反应历程进行了研究，确认它是一个先内酯开环、后脱水关环的反应。 - Isomerization, ring-opening and cracking activity of cyclohexane on catalysts increased with increasing of catalyst acidity and reaction temperature.
结果表明，反应温度和载体酸性是影响催化剂异构化活性、裂化活性的两个重要因素，增加反应温度或提高催化剂酸性都会导致催化剂的异构化活性降低、裂化活性增强。 - The influences of reaction conditions on D4 ring-opening polymerization including reaction temperature, the amount of emulsifier and reaction time respectively to latex particles, conversion rate, viscosity average molecular weight and mechanical stability were studied.
并考察了反应温度、乳化剂的用量、反应时间对乳液体系的粒径、D4的转化率、黏均相对分子质量和力学稳定性的影响。 - In addition, during the design and optimization process in praziquantel synthetic routes, a new type of solvent-free oxidative ring-opening reaction of N-acyl-tetrahydroisoquinoline under ball mill condition was discovered.
此外，在对毗喹酮合成路线进行优化设计过程中，发现一种新型机械研磨条件下的无溶剂N-酰基四氢异喹啉氧化开环反应。 - The main products from the thermal cracking of n-heptane are the alkanes and alkenes with low molecular weights. The pyrolysis of cyclohexane and JP-10 are preferred to dehydrogenation, and the probability of ring-opening reaction is very low.
正庚烷裂解时容易产生小分子的烷烃和烯烃；环己烷和JP-10更倾向于脱氢反应，开环裂解反应转化率较低。 - Then Pleurotus ostreatus exhibits its special degraded mechanism, methoxy was displaced by methyl, then the ring-opening reaction was happened. This is different compare to the reported about the degradation mechanism of white-rot fungi.
在进一步的降解过程中，平菇表现了其自身特有的降解机制，取代苯环单体上的甲氧基为甲基，而后发生苯环的开裂，这与报道过的白腐菌降解过程有所不同。 - The ring-opening reaction process of the DHA molecules was observed by UV-Vis absorption spectrum, which takes very short time, 3-minute only.
以紫外&可见吸收光谱观察了其分子光开环反应过程，发现其光开环过程可在3分钟内迅速完成。