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catalysis
英:【kətæləsɪs】美:【kəˈtælɪsɪs】
英:
美:
n.
催化作用
名词复数:
catalyses
1 、Application areas include nanoscale science, quantum photochemistry, combustion, biochemistry,
catalysis
, and atmospheric and environmental chemistry.───例如:我们把含时波包方法用于研究化学反应的非绝热过程,并发展非绝热过程势能面的计算和拟合方法。
2 、Endo and exo cycloaddition products (15)( 16) were obtained when (14) was cyclized by the
catalysis
of BF_3.Et_2Oat room temperature.───Lewis acid(BF3.Et2O)催化化合物(14)进行IMDA反应,分离得到endo和exo两种环合产物,(15)和(16);
3 、Have probed into the dynamics parameter of the
catalysis
promoter.───探讨了催化反应的动力学参数。
4 、Indcating effective suppression of trimethylamine(TMA) format ion over the zeolites, which is due to the shape selective
catalysis
of zeolites.───对三甲胺表现出明显的抑制效应可归结于沸石的择形催化效应。
5 、The Ipatieff Laboratory was created and research activities in
catalysis
and related surface science have expanded.───催化和表面科学中心,其生产和研究活动在催化和相关表面科学。
6 、The market should be very good, wanting bud seedling food only is natural, did not pass
catalysis
of what chemistry material.───市场应该很好的,只要芽苗菜是天然的,没有经过什么化学物质催化。
7 、Catalysis And Reaction Engineering Division. (2 Vols)(Presentations At The 2007 Aiche Annual Meeting)/ Held 4-9 November 2007, Salt Lake City, Utah.───2007年催化和反应工程分会文集(2卷集)(在2007年美国化学工程师学会年会的演示)
8 、The Society is an affiliation of 13 local Catalysis Clubs and Societies in North America.───此团体有13个地方性触媒俱乐部与北美协会的加入。
9 、The FBS (fluorous biphase system ) makes homogeneous
catalysis
and heterogeneous separation possible and easy to separate the catalysts dissolved in PFC (perfluo rocarbons).───氟两相体系实现了均相催化多相化, 可以方便地分离溶解在PFC 中的催化剂。
10 、The mathematical model of the steam reforming
catalysis
reaction on TBC-EBC is established.───同时,建立了催化/热障功能梯度涂层的水蒸气重整催化性能数学模型。
11 、In this paper, the latest advances in the application of silicoaluminophosphate (SAPO) molecular sieves to isomeric
catalysis
are reviewed.───摘要介绍了SAPO分子筛在烯烃异构、烷烃异构、芳烃异构、异构脱蜡等化工过程的最新应用;
12 、Knowledge in the fields of petrol chemistry, chemical engineering,
catalysis
, etc.───具有石化,化工,尤其是催化等领域的专业知识,熟悉相关的行业信息。
13 、Harness supramolecular constructs to preserve the integrity of chemically labile species while conserving sites for the
catalysis
of cheical reactions including product release.───利用超分子结构维持化学不稳定物质的完整性。同时保存包含产物释放的化学反应中的催化位点
14 、The
catalysis
effect was compared with acetate zinc and the caralysis mechanism of PET depolymerization were analyzed preliminarily.───比较未负载活性炭醋酸锌的催化效果,初步探讨催化机理。
15 、Under the
catalysis
of sodium hydroxide solution,TBA epoxy resin was prepared by stepwise polymerization by use of tetrabromobisphenol A(TBA) and epichlorohydrin(ECH).───TBA与环氧氯丙烷(EHC)在氢氧化钠溶液的作用下,通过逐步聚合得到TBA型环氧树脂;
16 、The FBS (fluorous biphase system) makes homogeneous
catalysis
and heterogeneous separation possible and easy to separate the catalysts dissolved in PFC (perfluorocarbons).───氟两相体系实现了均相催化多相化,可以方便地分离溶解在PFC中的催化剂。
17 、CeO2 and ZnO both are important oxides, they have broad applications in field such as
catalysis
, ceramics, superconductor, and gas sensor.───将纳米催化剂应用于甲烷二氧化碳氧化偶联反应就成为很具潜力的研究方向。
18 、Non-silicated metal oxides and sulphides are expected to show potential uses in many fields such as
catalysis
, optics, electricity and gas sensors.───摘要非矽组成的介孔金属氧化物和硫化物半导体材料在光、电、催化和传感等诸多领域展示了独特的应用前景。
19 、Catalysis may be either homogeneous or heterogeneous.───催化可以是均相的,也可以是多相的。
20 、Additionally, its development on biomolecule templated materialtowards enzyme-like
catalysis
in the up-coming years were also summerized.───对金属配位化合物在模拟催化方面的研究进展作了概述。
21 、Catalysis has increased the rate of reaction.───催化作用提高了反应的速度。
22 、HQ and H_2O_2 as the substrates of MPO, passed through the cellmembrane and reacted under the
catalysis
of intracellular MPO, and the products, BQ and H2O, were formed.───当溶液中加入MPO的底物(HQ和H_2O_2)后,它们可以**细胞内MPO的表面,并在MPO的催化下发生反应生成BQ和水。
23 、The advances in application of chiral 2, 2-binaphthol phosphonite (phosphite, phosphoramidite) in the asymmetric
catalysis
has been reviewed.───摘要本文综述了手性亚膦(**)酸联二萘酚酯及手性亚膦(**)酸联二萘酚胺酯配体在不对称催化应用中的最新进展。
24 、Catalysis: Development of chirometallopor-phyrins as enantioselective oxidation catalysts of alkenes and sulfides.───催化作用:开发新型手性金属催化烯类及硫醚类之对映选择性氧化。
25 、With its particular structure and excellent function, mineral material taking mineral as basis has been widely used in the field of
catalysis
.───摘要矿物材料是以矿物为主要或重要组分的材料,以其特殊的结构和优异的性能被广泛应用于催化领域。
26 、A multifunction-debinding furnace is designed, which can be used in
catalysis
debinding, solvent debinding, condensation evapour debinding and siphonage debinding.───本文设计了一种可用于多种脱脂工艺的多功能脱脂炉,包括催化、溶剂、冷凝蒸汽和虹吸脱脂。
27 、To modify, especially to increase, the rate of(a chemical reaction) by
catalysis
.───催化通过催化剂来改变尤指加快(一个化学反应)的速度
28 、In specific acid
catalysis
, the undissociated acids do not contribute.───在特殊的酸催化中,不离解的酸不起作用。
29 、Furthermore, samples, as
catalysis
, were used to degrade simulation dye effluents, such as solutions of Acid Red G, Direct Bordeaux, Direct Red and Methylene Blue.───同时以酸性红G、直接枣红和直接大红(直接染料)及亚甲基蓝为对象模拟染料废水进行催化降解实验。
30 、The research progress on sources,
catalysis
mechanism,application and study level of the enzymes with acitivity on naringenin is reviewed.───本文综述了在植物中部分对柚皮素具有活性的酶的来源、作用机理、应用情况及研究水平。
31 、Kirchner G, Scollar M P, Klicanov A M. Resolution of racemic mixture vialipse
catalysis
in organic solvents 【J】.J. AM. Chem. soc., 1986,107:7072.───朱全红,邓芹英,曾陇梅.手性药物的薄层色谱拆分【J】.药物分析杂志,2002,22(2):155.
32 、Seven new cinnamoyl substituted hydrazide compounds were synthesized by reaction of cinnamyl chloride with different hydrazides under phase transfer
catalysis
condition.───摘要利用相转移催化法,由肉桂酰氯与取代单酰肼反应,得到7种肉桂酰取代酰肼类化合物;
33 、The effect of sound field on the
catalysis
activity and the molecular conformation of protease was discussed.───本文综述了声场对蛋白酶催化活力及分子构象的影响。
34 、Abstract: This paper discussed the recent progress in the field of sono
catalysis
,including homogenous
catalysis
and hetergeneous
catalysis
.───文摘:综述了近几十年来超声在催化反应领域中的研究成果,包括超声在均相和多相催化反应中的应用。
35 、The method is based on the
catalysis
of rutin to the discoloring reaction of butyl rhodamine B oxidized by potassium periodate solution.───在氢氧化钠介质中,微量芦丁对高碘酸钾氧化丁基罗丹明B褪色反应有明显的催化作用,据此建立了测定芦丁含量的催化动力学光度法。
36 、A novel
catalysis
kinetics fluorimetry is established for indirectly detemining phthalate esters(PAES) in cosmetical samples.───日化品中邻苯二甲酸酯PAES含量的测定对于保护人体健康具有重要作用。
37 、This paper introduces four theories about the antibacterial mechanism of silver: sterilization by static adsorption, ion exudation, light
catalysis
, and complex function.───摘要介绍银的抗菌机理的4种理论:静电吸附杀菌、金属溶出杀菌、光催化杀菌和复合作用杀菌。
38 、According to the results and data reported,it was given that the
catalysis
activity of iodine in acid and alcohol esterfication is not high.───将实验结果与文献数据综合分析,得出了碘作为催化剂在酸醇直接酯化反应中的催化活性不高。
39 、The
catalysis
and oxidation Coulomb method to measure organic Chlorides is introduced.───介绍了催化氧化库仑法测有机氯化物的方法。
40 、Harness supramolecular constructs to preserve the integrity of chemically labile species while conserving sites for the
catalysis
of chemical reactions including product release.───利用超分子结构维持化学不稳定物质的完整性。同时保存包含产物释放的化学反应中的催化位点,
41 、It can be used in
catalysis
oxidative reaction, and the organic sulfurous compound can be inverted to more polarity oxysulfide sulfoxide with it.───分析该催化剂在柴油的空气氧化脱硫反应中的催化效果。
42 、Increased rate of reaction, in the presence of catalyzers, is called
catalysis
, or catalytic action.───有催化剂时,反应速度的加快叫做催化作用。
43 、Hydrotalcite-like anionic clays haye many special properties, which can be used as
catalysis
materials widely.───水滑石类材料具有独特的性能,作为催化及吸附材料应用广泛。
44 、Consequently, H_2Q and H_2O_2 could enter the cell and react to produce BQ and H_2O under the
catalysis
of MPO. The produced BQ and H_2O diffused outside from the cell.───当溶液中加入MPO的底物(H_2Q和H_2O_2)后,它们可以**到细胞内,并在细胞内MPO的催化下发生反应生成BQ和水,生成的BQ和水**到细胞外。
45 、As a green solvent of high -performance,it is playing an important role in chemical separation,
catalysis
and electrochemistry,etc.───作为一种高效绿色溶剂,室温离子液体在化学分离、催化、电化学等方面发挥着重要的作用。
46 、In this paper,the latest advances in the application of silicoaluminophosphate (SAPO) molecular sieves to isomeric
catalysis
are reviewed.───介绍了SAPO分子筛在烯烃异构、烷烃异构、芳烃异构、异构脱蜡等化工过程的最新应用;
47 、Numerous applications of two phase
catalysis
to hydroformylation, hydrogenation and other organic reactions are also described.───两相催化在烯烃的氢甲酰化反应、不饱和化合物的加氢反应以及其它有机反应中获得了广泛的应用。
48 、Mimic enzyme
catalysis
is a new challenging project in green chemistry.───仿酶催化是绿色化学研究中的一个重要课题。
49 、Additional contributio to
catalysis
can come from bound water molecules, metal io , or other factors.───其它促成催化的因素来自结合水分子,金属离子或其它因子。
50 、Progress in research of CO 2 activated by plasma and plasma
catalysis
is summarized.───本文综述了近年来利用等离子体活化及等离子体与催化剂协同活化二氧化碳转化的研究进展。
51 、The
catalysis
and catalysts of synthesis of vinyl acetate(VAc )by reductive carbonylation have been reviewed in this paper.───本文着重对羰化法制醋酸乙烯的催化技术进行了评述。
52 、The methods for immobilization and the applications of immobilized ionic liquids in
catalysis
and separation processes are reviewed in this paper.───本工作介绍了离子液体的固定化方法以及固定化离子液体在催化、分离方面的应用进展。
53 、The imperfections of market economy often function as
catalysis
to such personality deficiencies as individualism, utilitarianism, selfish departmentalism and opportunism.───市场经济自身的不完善引起人们种种的人格缺陷;个人主义、功利主义、本位主义和机会主义。
54 、The FBC(fluorous biphase
catalysis
) is a new nonaqueous immobilization and phase-separation tech-nique.───氟两相催化体系(FBC)是一种新型均相催化剂固定化(多相化)和相分离技术。
55 、S. B. Liu, Editor, Proceedings of the 3rd Conference of Indo-Pacific Catalysis Association, Academia Sinica, Taipei, Taiwan (2003).───刘尚斌,吴纪圣”第二十一届台湾区触媒及反应工程研讨会”论文集主编,中央研究院出版(2003).
56 、Abstract: The elementary principles and methods of carbon dioxide fixation by coordination and insertion reactions of transition metal complexes
catalysis
are reviewed.───文摘:综述了利用过渡金属配合物和二氧化碳的配位及**入反应实现二氧化碳固定的基本方法、原理及其研究现状。
57 、In addition, the applications of polyoxometalate in the area of biomimetic
catalysis
are discussed.───同时也关注了多金属氧酸盐在仿生催化领域的应用。
58 、Electricity for powering a fuel-cell car is produced when electrons are stripped from hydrogen atoms at
catalysis
sites on the membrane surface.───当隔膜表面的触媒使氢原子上的电子游离时,即产生电力,供应燃料电池汽车动力。
59 、This paper reviews the recent research work on the 4th China-Japan -USA.Symposium in organometallic chemstry and
catalysis
in Japan Tsukuba.───本文回顾在日本筑波市举行的第四次中、日、座谈会上关于有机金属化学和催化作用最新的研究成果。
60 、Consequently, H_2Q and H_2O_2 could enter the cell and react under the
catalysis
of PO to produce BQ and H_2O.───当溶液中加入PO的底物(H_2Q和H_2O_2)后,它们可以**到细胞内,并在细胞内PO的催化下反应生成BQ和水。
61 、Method Photochemical
catalysis
traps,fly catchers,and cockroach catchers were used in this study.───方法采用光催化诱捕器捕蚊,捕蝇笼诱捕法捕蝇,粘蟑盒诱捕法捕蜚蠊。
62 、The immobilization methods of enzyme catalyst and the applications in
catalysis
reaction were introd...───并对固定化方法进行了比较和评价。
63 、Moreover, we investigate the
catalysis
of four transition metal ions Cu~(2+), Mn~(2+),Co~(2+) and Zn~(2+) on the Fenton reaction.───另外,还考察了过渡金属离子Cu~(2+)、Mn~(2+)、Co~(2+)、Zn~(2+)对Fenton试剂的协同催化作用。
64 、The corresponding reaction of acetaldehyde is subject to general base
catalysis
.───乙醛相应的反应服从广义的碱催化。
65 、In order for the flux to have different levels of intonation there must be a
catalysis
of some kind.───持有不同音调水平的适宜的流量一定是某种性质的催化作用。
66 、Pentachlorobenzene cyanide was synthesized by means of gas solid
catalysis
and chlorination using cyanobenzene and chlorine as the raw materials.───以苯甲腈和氯气为原料,用气固催化氯化法研制了五氯苯甲腈。
67 、According to the results and data reported, it was given that the
catalysis
activity of iodine in acid and alcohol esterfication is not high.───将实验结果与文献数据综合分析,得出了碘作为催化剂在酸醇直接酯化反应中的催化活性不高。
68 、Catalysis may be either homogeneous or heterogenous.───催化可以是均相的,也可以是多相的。
69 、Applications including enzyme
catalysis
in SCF fermentation in SCF, SCF sterilization and cell disruption were reviewed.───已在生物工程领域应用的超临界流体技术有超临界流体酶催化、超临界流体发酵、超临界流体灭菌和细胞破碎技术等。
70 、Engine control systems and vehicle exhaust control systems such as ternary
catalysis
conversion devices, etc.───发动机管理系统、三元催化转化装置等汽车尾气排放控制系统。
71 、Method: The activity of GST in the tissues was detected by substract
catalysis
method.───方法:用GST底物催化测定法检测成熟、未成熟猪囊尾蚴头节及囊壁匀浆的GST活性。
72 、The elementary principles and methods of carbon dioxide fixation by coordination and insertion reactions of transition metal complexes
catalysis
are reviewed.───摘要综述了利用过渡金属配合物和二氧化碳的配位及**入反应实现二氧化碳固定的基本方法、原理及其研究现状。
73 、UV Raman spectroscopy and its applications in
catalysis
are introduced.───本文介绍了紫外拉曼光谱及其在催化研究中的应用。
74 、Increased rate of reaction, in the presence of catalyzer, is called
catalysis
, of catalytic action.───有催化剂时反应速度的加快叫做催化作用。
75 、In the paper, the
catalysis
mechanism of FG is preliminarily discussed.───文中对FG的作用机理作了初步探讨。
76 、Catalysis chemistry evolves from the development of economic society and the progress of scientific technology.───催化化学是在经济社会的发展和科学技术的进步双重推动下应运而生的。
77 、The good dispersivity colloids have excellent
catalysis
for direct copper plating and its UV-VIS peaks are broadened.───分散性好的胶体钯溶液的紫外-可见吸收峰变宽,经过活化可以进行直接电镀。
78 、German chemist. He won a1909 Nobel Prize for work on
catalysis
and chemical equilibrium.───奥斯特瓦尔德,威廉1853-1932德国化学家。因其在催化作用和化学平衡方面的贡献获1909年诺贝尔奖。
79 、Niobic acid and compounds containing niobium are applied in a wide range of
catalysis
fields for their unique acidic property and thermal stability.───摘要铌酸和含铌化合物独特酸性和热稳定性,广泛的应用催化领域中。
80 、Pinna F. “Supported metal catalysts preparation”, Catalysis Today, 41, 129-137, 1998.───吴荣宗,“工业触媒概论”,国兴出版社,1989。
酶的原理是什么
酶作用原理
1.趋近效应(approximation)和定向效应(oientation)酶可以将它的底物结合在它的活性部位由于化学反应速度与反应物浓度成正比,若在反应系统的某一局部区域,底物浓度增高,则反应速度也随之提高,此外,酶与底物间的靠近具有一定的取向,这样反应物分子才被作用,大大增加了ES复合物进入活化状态的机率。
2.张力作用(distortionorstrain)
底物的结合可诱导酶分子构象发生变化,比底物大得多的酶分子的三、四级结构的变化,也可对底物产生张力作用,使底物扭曲,促进ES进入活性状态。
3.酸碱催化作用(acid-basecatalysis)
酶的活性中心具有某些氨基酸残基的R基团,这些基团往往是良好的质子供体或受体,在水溶液中这些广义的酸性基团或广义的碱性基团对许多化学反应是有力的催化剂。
4.共价催化作用(covalentcatalysis)
某些酶能与底物形成极不稳定的、共价结合的ES复合物,这些复合物比无酶存在时更容易进行化学反应。
例如:无酶催化的反应RX+H2O→ROH+Hx慢
有酶存在时RX+E桹H→ROH+EX快
EX+H2O→E桹H+HX快
酶的原理是什么
酶就是起催化作用.和化学里的催化剂是一样的道理.它本身不参与反应,反应前后其本身没有任何变化.生物酶有,蛋白质类、固醇类、RNA类!
补充:
酶作用机理
1.趋近效应(approximation)和定向效应(oientation)酶可以将它的底物结合在它的活性部位由于化学反应速度与反应物浓度成正比,若在反应系统的某一局部区域,底物浓度增高,则反应速度也随之提高,此外,酶与底物间的靠近具有一定的取向,这样反应物分子才被作用,大大增加了ES复合物进入活化状态的机率。
2.张力作用(distortionorstrain)
底物的结合可诱导酶分子构象发生变化,比底物大得多的酶分子的三、四级结构的变化,也可对底物产生张力作用,使底物扭曲,促进ES进入活性状态。
3.酸碱催化作用(acid-basecatalysis)
酶的活性中心具有某些氨基酸残基的R基团,这些基团往往是良好的质子供体或受体,在水溶液中这些广义的酸性基团或广义的碱性基团对许多化学反应是有力的催化剂。
4.共价催化作用(covalentcatalysis)
某些酶能与底物形成极不稳定的、共价结合的ES复合物,这些复合物比无酶存在时更容易进行化学反应。
例如:无酶催化的反应RX+H2O→ROH+Hx慢
有酶存在时RX+E桹H→ROH+EX快
EX+H2O→E桹H+HX快?