
[物化] 多相催化
The application of Mssbauer spectroscopy to the study of heterogeneous catalysis is briefly described.
本文簡要介紹了穆斯堡爾譜學在多相催化研究中的應用。
The treatment of aniline wastewater was investigated using novel electro-heterogeneous catalysis reactor.
本文設計一種新型的電-多相催化反應器處理苯胺廢水。
Nanomania has reached the area of heterogeneous catalysis, a new concept namely called nanocatalysis is thus generated.
“納米熱”已滲透到多相催化領域的研究中,由此産生了一個新概念———納米催化。
The impulse-response technique is widely used for heterogeneous catalysis study to evaluate transfer and adsorption coefficients and kinetic constant.
脈沖-應答技術廣泛應用于多相催化研究中求取傳遞與吸附系數和動力學常數。
This invention relates to a heterogeneous catalysis palladium catalyst, in addition to its preparing method and usage.
本發明涉及一種非均相钯催化劑、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:本文對甲烷催化氧化制含氧化合物的研究,從多相催化和液相催化兩個 方面進行了綜述;
Fractal geometry has been applied to the research of heterogeneous catalysis since 80′s.
80年代以來,分數維幾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.
同樣,以HAP基材料作為多相可循環催化劑也已顯示出其在催化領域的優勢。
In this review, a brief introduction of application of surface science for the advancement of environmental heterogeneous catalysis is provided.
簡要介紹環境多相催化研究過程中應用表面科學的研究方法的必要性和将會遇到的挑戰和機遇。
It is a hot research topic in the field of nano-science and heterogeneous catalysis at current.
屬當前納米科學和異相催化領域熱門研究課題。
It is also the first elementary step in heterogeneous catalysis and the fundamental to understanding of catalytic mechanism.
目前理論也越來越多的被證實是一個有效的研究手段。
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.
近年來将SPS和EFISPS技術應用于多相催化研究領域,顯示出其檢測靈敏度高、再現性好、操作簡單等特點。
These hollow spheres are used as confined reaction vessels, drug carriers, dye dispersants, and carrier systems in heterogeneous catalysis et al.
納米膠囊的應用領域非常廣泛,已經或正在應用于微型反應器、藥物載體、染料分散劑、非均相催化劑載體等方面。
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.
二者結合為在分子水平上設計構築催化中心提供了一條可借鑒的分子研究途徑和方法,已發展成為催化基礎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.
通過對催化反應機理推導過程的描述和分析,建立相應的程式算法。
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.
隨着固體高分辨核磁共振技術的日益發展.已廣泛應用于研究吸附及催化問題。
The preparation of bio***sel is briefly introduced and research actuality of bio***sel synthesis via heterogeneous base catalysis is reviewed in this paper.
該文簡要介紹生物柴油制備方法,綜述多相堿催化制備生物柴油研究現狀。
In order to address these problems, heterogeneous Pd catalysis is a promising option.
要解決上述問題,利用異相的钯催化劑是個不錯的選擇。
The FBS (fluorous biphase system) makes homogeneous catalysis and heterogeneous separation possible and easy to separate the catalysts dissolved in PFC (perfluorocarbons).
氟兩相體系實現了均相催化多相化,可以方便地分離溶解在PFC中的催化劑。
It is suggested that the ice surface shows catalytic character for the heterogeneous reaction through structure catalysis and.
計算結果表明在冰表面上在平流層條件下标題反應是通過結構催化和水催化進行反應的。
The field of catalysis is mainly divided into heterogeneous one and homogeneous one.
多相催化和勻相催化是催化領域的兩大類型。
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)是一種化學反應加速機制,其核心特征是催化劑與反應物處于不同的物理相态(如固體催化劑與氣态或液态反應物)。該技術廣泛應用于工業生産和環境治理領域,其作用機理可分為三個關鍵步驟:
表面吸附
反應物分子通過化學吸附或物理吸附作用與催化劑表面活性位點結合。例如,合成氨反應中氮氣分子在鐵基催化劑表面的解離吸附(來源:國際純粹與應用化學聯合會)。
表面反應
吸附态分子在催化劑表面發生化學鍵重組。以汽車尾氣淨化為例,鉑催化劑促使一氧化碳與氮氧化物轉化為二氧化碳和氮氣(來源:《工業催化原理》第三版,中國科學院出版社)。
産物脫附
生成物脫離催化劑表面,使活性位點恢複催化能力。此特性使催化劑可循環使用,如煉油工業中沸石分子篩的持續再生(來源:美國化學會《化學評論》期刊)。
非均相催化的核心優勢體現在:
目前全球90%以上的化工生産過程依賴該技術,包括哈伯法合成氨、費托合成燃料等關鍵工藝(來源:德國馬克斯·普朗克學會催化研究所年度報告)。
heterogeneous catalysis(多相催化)是化學領域的重要概念,具體解釋如下:
指催化劑與反應物處于不同相态的催化反應,例如氣-固、液-固等相态組合。催化劑和反應物之間存在相界面,催化反應發生在界面處。
多相催化反應動力學(heterogeneous catalysis kinetics)是研究重點,涉及反應速率、催化劑表面活性位點等機制分析。例如烯烴環氧化反應的多相催化研究,推動了新型催化劑開發。
與均相催化(homogeneous catalysis)不同,多相催化避免了催化劑溶解于反應體系的問題,但可能因相界面限制導緻反應效率差異。
【别人正在浏覽】