- 更多网络例句与催化作用相关的网络例句 [注:此内容来源于网络,仅供参考]
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Alkylamine reaction with dialkyl cyanodithioiminocarbonate was catalyzed by quaternary ammonium salts at room temperature to yield 3-alkylamine-5-amino-1,2,4-triazole in good quality and high yields. After imidization and reaction with an α,β-unsaturated acid derivative, the reaction intermediate was hydrolyzed in the presence of a Lewis acid to obtain the target product.
烷基胺与氰基亚胺硫代二甲酯在季氨盐催化作用下得到质量好、收率高的3-烷氨基-5-氨基-1,2,4-三氮唑,进一步经过亚胺中间体并与α,β-不饱和酸酯作用后,中间产物在Lewis酸催化作用下水解得到三唑嘧啶酮。
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The catalytic effect of different modified molecular si eves were studied for synthesis amyl acetate, the results indicate that SO 2- 4 /FeZSM have go od catalysis activity to esterification .The effect of the ratio of reactants, the amoun t of the catalyst and the reaction time were also investigated.
考察不同改性分子筛催化合成乙酸戊酯的催化活性,结果表明:改性SO2 - 4/FeZSM对合成酯的催化作用较好,并讨论了以该催化剂催化酯化时原料配比、催化剂用量、反应时间等因素与酯化反应的关系。
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The effects of the composition of catalyst (the structure and amount of bident ligand and strong acid, the cocatalytic activity of Cu〓, the roles of methanol and phenol etc.) and the copolymerization condition (the reaction time, temperature, amount of ST and CO, the structure and amount of solvent etc.) on catalytic activity were studied. The principle of the copolymerization was investigated.
研究了催化体系组成(含氮双齿配体的结构与用量、强酸的结构与用量、铜盐的助催化作用、甲醇和酚类化合物作用等)和共聚反应条件(共聚反应的温度与时间、溶剂种类与用量、苯乙烯与一氧化碳量等)对溶液共聚反应的催化活性的影响,探索溶液聚合反应规律。
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The effects of the composition of catalyst (the structure and amount of bident ligand and strong acid, the cocatalytic activity of Cu〓, the roles of methanol and phenol etc.) and the copolymerization condition (the reaction time, temperature, amount of ST and CO, the structure and amount of dilution reagent etc.) on catalytic activity were studied in detail. Also the optimum copolymerization condition was chosen.
深入考察了催化体系组成(含氮双齿配体的结构与用量、强酸的结构与用量、铜盐的助催化作用、醇类与酚类化合物的作用等)和沉淀共聚反应条件(共聚反应的温度与时间、稀释剂结构与用量、苯乙烯与一氧化碳量等)对该共聚反应的催化活性的影响,优化共聚反应的聚合条件。
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NO elimination reactions are much complicated in the system of NO-CO-CO2-N2 with the existence of metallic oxides. Homogeneous reaction between NO and CO, reduction of NO by the lower valued metallic oxides, direct decomposition of NO as a catalytic reaction and catalytic reaction of NO/CO may all contribute in NO elimination.
金属氧化物存在条件下NO-CO-CO2-N2体系中,NO去除反应较为复杂,NO/CO气相直接反应、低价氧化物对NO的还原作用、金属氧化物对NO分解反应的催化作用及金属氧化物对NO/CO反应的催化作用等都可能存在。
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We also found for the first time that the reaction between ketone and alcohol to ketal was catalyzed by benzamide and their derivatives, and the related mechanism is proposed. Furthermore, under the same irradiation condition, the photo-reaction of succimide with alcohol as well as the photolysis of benzene sulfonamide was also found and studied.
并首次发现在紫外光激发下,苯甲酰胺对酮和醇生成缩酮的反应有一定的催化作用,进而对一系列芳酰胺类化合物作了对比实验,发现芳酰胺类化合物均能对缩酮的生成有催化作用,并对芳酰胺的作用机理进行了初步探讨。
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It has offered the information of the boiling points of the chemical compounds, and it is helpful to reutilize them after their separation by rectification. The results showed that the main compounds of the heavy cut of terpineol were longifolene and βcaryophyllene. They are from the raw material, terpinene oil.
松油醇的合成工艺方法主要有两种:一种是一步法,即松节油在酸催化作用下直接进行水合反应生成松油醇;另一种是二步法,即松节油首先在酸催化作用下水合成萜二醇,再经稀酸催化脱水生产松油醇。
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The Schiff base transitional metal complexes of various structures and their metallomicelles as peroxidase models for the phenol and phenolic derivant oxidation have been investigated. Some results are obtained from the studies:(1) the Schiff base transitional metal complexes have high catalytic activity for the phenol and phenolic derivant oxidation, and the structure of the complexes has a great effect on its catalytic activity;(2)a novel kinetic mathematical model for the complexes and their metallomicelles catalyzing the phenolic derivant oxidation has been established;(3) the feasibility and mechanism for the phenolic derivant oxidation catalyzed by the metallomicelle(as the mimetic model of peroxidase)have been discussed.
研究了冠醚Schiff碱金属配合物作为过氧化物酶的模拟模型对酚类物质氧化反应的催化作用,取得如下结果:(1)几种冠醚Schiff碱金属配合物对催化酚类物质氧化具有良好的催化活性,其中配体结构对其催化活性有较大的影响;(2)建立了金属配合物与表面活性剂形成的金属胶束催化酚类物质氧化反应的动力学数学模型;(3)探讨了金属胶束模拟过氧化物酶催化酚类氧化反应的可行性及其机理。
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The molecular weight of dextransucrase measured by SDS-PAGE was 170 kDa ,which was similar to the enzyme from Leuconostoc mesenteroides. The enzyme had an optimum temperature between 25and 30℃ and an optimum pH of 5.4. It was relatively stable in the range of pH 5.0 to 7.0, but the stability declined rapidly as soon as the temperature rose over 35℃.
以蔗糖为底物,酶促反应的最适温度为25~30℃,最适pH值为5.4,动力学常数Km值为10.43 mmol/L;酶活在pH 5.0~8.0较为稳定,在室温(25℃)保藏4 天仍有59%的酶活力,4℃保存7周酶活力仅下降一半,但在35℃以上失活很快;Ca2+对催化作用有较大的促进,Mg2+有微弱的促进作用,K+对催化反应无影响,Cu2+的抑制作用最强。
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It is found that NaOH exhibited significant cocatalytic action on the oxidation of o and p nitrotoluenes and had no cocatalytic action on the oxidation of m nitrotoluene, and the cocatalytic action of alkali NaOH increased as the concentrations of NaOH increased.
发现NaOH对氧气氧化邻、对硝基甲苯有明显的助催化作用,且碱的助催化作用随着NaOH浓度的增加而增加;而对氧气氧化间硝基甲苯则没有助催化作用。
- 更多网络解释与催化作用相关的网络解释 [注:此内容来源于网络,仅供参考]
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autocatalysis:自动催化作用
1.自(动)催化作用(autocatalysis) 植物同化CO2速率,很大程度上决定于光合碳还原循环的运转状态,以及光合中间产物的数量. 暗中的叶片移至光下,最初固定CO2速率很低,需经过一个"滞后期"后才能达到光合速率的"稳态"阶段. 其原因之一,
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magmatic autocatalysis:岩浆自催化作用
magmatic assimilation 岩浆同化 | magmatic autocatalysis 岩浆自催化作用 | magmatic breccia 岩浆角砾岩
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catalysis:催化作用
l836年,Berzelius经过多年的化学反应过程研究后认为,催化剂提供了一种特殊的能量从而影响反应物之间的作用力,并首次命名为"催化作用"(Catalysis). 1895年,0stwald提出"催化现象的本质在于某些物质具有特别强烈的加速那些没有它们参加时进行得很慢的反应过程的性能".
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Heterogeneous Catalysis:多相催化(催化剂与反应物处于不同相如在固体和流体相界面间发生催化作用)
glass delivery tube 玻璃导管 | heterogeneous catalysis 多相催化(催化剂与反应物处于不同相如在固体和流体相界面间发生催化作用) | homogeneous catalysis 均相催化(催化剂与反应物在同相中反应)
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Heterogeneous Catalysis:多相催化作用
heterogeneous body 不均匀体 | heterogeneous catalysis 多相催化作用 | heterogeneous catalyst 多相催化剂
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catalyze:催化作用
catalyzator 催化剂 | catalyze 催化作用 | catalyzed reaction 催化反应
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catalyses:催化作用复数
catalyses 触媒作用 | catalyses 催化作用复数 | catalystactivatorpromoter 催化剂
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catalyses:触媒作用/催化作用 (复数)
catalysate /催化产物/ | catalyses /触媒作用/催化作用 (复数)/ | catalysis /催化作用/
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catalytical role:催化作用
catalytic role;催化作用;; | catalytical role;催化作用;; | CATARINO, Pedro Manuel;佩德罗.曼努埃尔.卡塔里诺;;
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katalysis:催化作用
首次对催化现象进行总结,并给了一个新的术语"催化作用"(Katalysis)的是瑞典化学大师J.J.贝采里乌斯,这一术语,一直到今天在科学上仍然使用它. 50-60年代初,魏茨(P.B.Weisz)等提出了分子筛晶内催化和择形催化作用. 在此顺便指出,