
[物化] 多相催化
The application of Mssbauer spectroscopy to the study of heterogeneous catalysis is briefly described.
本文简要介绍了穆斯堡尔谱学在多相催化研究中的应用。
The treatment of aniline wastewater was investigated using novel electro-heterogeneous catalysis reactor.
本文设计一种新型的电-多相催化反应器处理苯胺废水。
Nanomania has reached the area of heterogeneous catalysis, a new concept namely called nanocatalysis is thus generated.
“纳米热”已渗透到多相催化领域的研究中,由此产生了一个新概念———纳米催化。
The impulse-response technique is widely used for heterogeneous catalysis study to evaluate transfer and adsorption coefficients and kinetic constant.
脉冲-应答技术广泛应用于多相催化研究中求取传递与吸附系数和动力学常数。
This invention relates to a heterogeneous catalysis palladium catalyst, in addition to its preparing method and usage.
本发明涉及一种非均相钯催化剂、合成方法和用途。
Abstract: Emphasis is put on the recent development concerning the catalytic oxidation of methane to oxygenates by heterogeneous catalysis and liquid catalysis.
文摘:本文对甲烷催化氧化制含氧化合物的研究,从多相催化和液相催化两个 方面进行了综述;
Fractal geometry has been applied to the research of heterogeneous catalysis since 80′s.
80年代以来,分数维几何已用于非均相催化研究。
Also, HAP-based material acting as a catalyst shows its advantage in heterogeneous catalysis system.
同样,以HAP基材料作为多相可循环催化剂也已显示出其在催化领域的优势。
In this review, a brief introduction of application of surface science for the advancement of environmental heterogeneous catalysis is provided.
简要介绍环境多相催化研究过程中应用表面科学的研究方法的必要性和将会遇到的挑战和机遇。
It is a hot research topic in the field of nano-science and heterogeneous catalysis at current.
属当前纳米科学和异相催化领域热门研究课题。
It is also the first elementary step in heterogeneous catalysis and the fundamental to understanding of catalytic mechanism.
目前理论也越来越多的被证实是一个有效的研究手段。
Recently, the techniques of SPS and EFISPS have been applied in heterogeneous catalysis stu***s, they are characterized by high sensitivity, good reappearance and simplicity in operation.
近年来将SPS和EFISPS技术应用于多相催化研究领域,显示出其检测灵敏度高、再现性好、操作简单等特点。
These hollow spheres are used as confined reaction vessels, drug carriers, dye dispersants, and carrier systems in heterogeneous catalysis et al.
纳米胶囊的应用领域非常广泛,已经或正在应用于微型反应器、药物载体、染料分散剂、非均相催化剂载体等方面。
Their combination provided a method to design and construct in molecular level catalytic active centres, which was established to be one of the important goals in the field of heterogeneous catalysis.
二者结合为在分子水平上设计构筑催化中心提供了一条可借鉴的分子研究途径和方法,已发展成为催化基础研究的重要方向之一。
With the analysis and description of mechanism of heterogeneous catalysis, we founded programmed arithmetic and designed correlative programmer and database.
通过对催化反应机理推导过程的描述和分析,建立相应的程序算法。
With the development in technology of high resolution solid state NMR, it has been used to study the adsorption and catalytic process in heterogeneous catalysis.
随着固体高分辨核磁共振技术的日益发展.已广泛应用于研究吸附及催化问题。
The preparation of bio***sel is briefly introduced and research actuality of bio***sel synthesis via heterogeneous base catalysis is reviewed in this paper.
该文简要介绍生物柴油制备方法,综述多相碱催化制备生物柴油研究现状。
In order to address these problems, heterogeneous Pd catalysis is a promising option.
要解决上述问题,利用异相的钯催化剂是个不错的选择。
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。
It is suggested that the ice surface shows catalytic character for the heterogeneous reaction through structure catalysis and.
计算结果表明在冰表面上在平流层条件下标题反应是通过结构催化和水催化进行反应的。
The field of catalysis is mainly divided into heterogeneous one and homogeneous one.
多相催化和匀相催化是催化领域的两大类型。
Catalysis may be either homogeneous or heterogeneous.
催化可以是均相的,也可以是多相的。
|heterogeneous catalyst;[物化]多相催化
非均相催化(Heterogeneous Catalysis)是一种化学反应加速机制,其核心特征是催化剂与反应物处于不同的物理相态(如固体催化剂与气态或液态反应物)。该技术广泛应用于工业生产和环境治理领域,其作用机理可分为三个关键步骤:
表面吸附
反应物分子通过化学吸附或物理吸附作用与催化剂表面活性位点结合。例如,合成氨反应中氮气分子在铁基催化剂表面的解离吸附(来源:国际纯粹与应用化学联合会)。
表面反应
吸附态分子在催化剂表面发生化学键重组。以汽车尾气净化为例,铂催化剂促使一氧化碳与氮氧化物转化为二氧化碳和氮气(来源:《工业催化原理》第三版,中国科学院出版社)。
产物脱附
生成物脱离催化剂表面,使活性位点恢复催化能力。此特性使催化剂可循环使用,如炼油工业中沸石分子筛的持续再生(来源:美国化学会《化学评论》期刊)。
非均相催化的核心优势体现在:
目前全球90%以上的化工生产过程依赖该技术,包括哈伯法合成氨、费托合成燃料等关键工艺(来源:德国马克斯·普朗克学会催化研究所年度报告)。
heterogeneous catalysis(多相催化)是化学领域的重要概念,具体解释如下:
指催化剂与反应物处于不同相态的催化反应,例如气-固、液-固等相态组合。催化剂和反应物之间存在相界面,催化反应发生在界面处。
多相催化反应动力学(heterogeneous catalysis kinetics)是研究重点,涉及反应速率、催化剂表面活性位点等机制分析。例如烯烃环氧化反应的多相催化研究,推动了新型催化剂开发。
与均相催化(homogeneous catalysis)不同,多相催化避免了催化剂溶解于反应体系的问题,但可能因相界面限制导致反应效率差异。
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