异构化反应在分子筛的内外表面同时进行。
Isomerization could be performed on the internal and external surface of molecular sieve simultaneously.
晶体中的异构化反应。
综述了对正构烷烃临氢异构化反应进行的研究。
The research developments of n-paraffins hydroisomerization were reviewed.
研究了过渡金属催化的炔烃衍生物的异构化反应。
The transition metal catalyzed isomerization reactions of acetylenic derivatives were studied.
还发现通过冻干制剂化可以抑制上述异构化反应。
Further, they found that the isomerization reaction thereof can be suppressed by preparing a formulation by lyophilization.
本文报道了蒎烷在高温下进行热异构化反应的研究。
The thermal isomerization of Pinane is studied at high temperature and Atmospheric pres are.
研究了棉油甲酯在碘的催化下发生异构化反应的规律。
The isomerization of methyl ester of cottonseed oil by the catalyst iodine was investigated.
用密度泛函理论方法研究了过亚硝酸在水溶液中的异构化反应机理。
The isomerization mechanism of peroxynitrous acid (ONOOH) in the aqueous solution has been studied by using density function theory.
计算结果发现,六元环结构的机理使异构化反应的活化能大大降低。
The results show that: the mechanism of the six-caned construction make.
考察了所制备的催化剂上常温下正戊烷异构化反应的活性和选择性。
The catalytic activity and selectivity of the catalysts for n-pentane isomerization at ambient temperature were investigated.
研究结果表明该异构化反应先形成一个四元环过渡态而后转变为产物。
The obtained results show the isomerization reaction first forms a four membered ring transition state and then the product is got.
用国产异构化酶在固定床中研究了D -葡萄糖与D -果糖异构化反应动力学。
The kinetics of the isomerization of D-glucose and D-fructose was studied on the immobilized enzyme.
采用微反-色谱联合装置对环氧丙烷开环异构化反应中催化剂的初活性进行了评选。
The initial activity of catalyst in isomerization reaction of propylene oxide have been evaluated with microreactorchromatograph.
原油蚀变后提高了甾烷异构化反应程度,某些样品远远超过异构化反应平衡终点值。
After crude oil alteration, the degree of sterane isomerization reaction is enhanced, and in some samples, the balanced endpoint value of isomerization reaction is exceeded far beyond.
树脂在酯化反应中生成的顺丁烯二酸酯的结构受热的影响会产生顺、反异构化反应。
Under the influence of heat, the maleate structure formed in the esterification tends to isomerize into fumarate.
焦炭对催化剂酸中心的覆盖能抑制骨架异构化反应,但其影响幅度小于对裂化反应的影响。
The suppression of skeletal isomerization caused by coke deposition on the active sites of catalyst is in a lesser extent than that of cracking.
在第二章中,通过理论计算对金催化的溴代连二烯酮环异构化反应的机理进行了研究和讨论。
In the second chapter, the mechanism of the gold-catalyzed cycloisomerization of bromoallenyl ketone was investigated and discussed.
考察了敏化剂的用量、反应物初始浓度、反应时间和溶剂对降冰片二烯光敏异构化反应的影响。
The effects of concentration of sensitizer, initial concentration of norbornadiene, reaction time and solvents on conversion of norbornadiene and selectivity of quadricyclane were investigated.
对C_5烯烃骨架异构化反应原理、催化剂的研究进展,以及异构化的工艺现状作了探讨和综述。
The principle of skeletal isomerization reaction of C_5 olefin, advances in research of catalyst, and the present situation of isomerization process were discussed and reviewed.
采用KOH为催化剂,正丁醇为溶剂,碱蓬籽油通过碱性异构化反应制备共轭亚油酸(CLA)。
The conjugated linoleic acids (CLA) were prepared by alkali isomerization with KOH as catalyst, butyl alcohol as solvent and suaeda salsa seed oil as raw material.
随着反应温度的提高,裂化反应和骨架异构化反应增强,但齐聚反应、氢转移反应和环化反应减弱。
The cracking and skeletal isomerization became more strong with the rise of reaction temperature, while oligomerization, cyclization and hydrogen transfer reaction became weaker.
骨架异构化反应是一个快速反应,低反应温度下减少反应时间会增强催化过程中的骨架异构化反应。
To react at a shorter contact time can enhance skeletal isomerization reaction under lower reaction temperature, since isomerization is a relatively quick reaction during catalytic cracking process.
但对邻二甲苯异构化反应,由于反应不是单纯由反应产物扩散控制,它们的对位选择性并无明显改善。
For isomerization of o-xylene the improvement in para-selectivity has not been observed, because the reaction is not mainly controlled by the diffusion of the reaction products.
强酸位是对二乙苯和乙苯裂化的活性中心,而对歧化和异构化反应生成对位异构体的选择性影响不大。
The strong acid is the active site for creaking para-diethylbenzene and ethylbenzene and it has little effect on p-isomer selectivity of disproportionation and isomerization.
反应是在固定床的条件下进行的,通过建立稳态反应模型,求出了异构化反应网络中的每一步动力学参数。
The reaction took place in the fixed bed reactor. By using steady state model, each step kinetic parameter in the reaction net was acquired.
研究了它们在烯烃双键异构化反应中的催化作用,优化了这两种催化剂在1—己烯双键异构化反应中的反应条件。
Their catalytic activity for 1-hexene double bound isomerization was investigated and their catalytic reaction conditions were optimized for double bound isomerization.
采用量子化学MNDO法,计算了氟代甲酰胺和N—氟代甲酰胺的1,2—氢迁移异构化反应势能面上的反应路径。
The reaction pathways of 1,2-hydrogen migration isomerization on the potential energy face have been calculated by the quantum chemistry, MNDO method.
SSBR/S/NS体系的非等温硫化过程和等温硫化过程中均存在顺反异构化反应,且非等温硫化过程中的顺反异构化程度比等温硫化过程高。
There was cis-trans isomerism on the system of SSBR/S/NS and the degree of cis-trans isomerism in the process of non-isothermal vulcanization was deeper than the isothermal vulcanization.
磨耗不仅会导致高分子链的断裂,而且可能会发生链转移反应和大分子自由基的异构化反应。提出了胶料磨耗是机械力引发的具有链式反应特征的力化学反应的结果。
The results show that the abrasion process is similar to its aging by heat and oxygen. The abrasion not only resulted in the fragmentation of macromolecule chain, but also would lead to ch…
评述了阳离子型聚合中电子重排、基团迁移异构化聚合反应和机理。
In this paper, the electron rearrangement, group transfer isomerization reactions and mechanism in carbocationic isomerization polymerizations are reviewed in detail.
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