Reaction kinetics of homogeneous and heterogeneous catalytic aldol condensation reaction 醛酮液相催化缩合反应的均相与非均相反应动力学研究
A mechanism of homogeneous and non-homogeneous catalytic oxidation of thiols is suggested. The homogeneous oxidation reaction follows an ion-free radical mechanism at initial stage and a ligand group substitution mechanism at finial steady stage. 提出了均相和非均相催化氧化反应机理,在均相催化氧化中,在初始阶段按离子-自由基反应机理进行,在速度稳定阶段按配位基置换机理进行。
Meanwhile, process of reactive absorption designed according to NY homogeneous catalytic system organically combined absorption with reaction, which may obviously shorten the process flow. 同时,针对NY均相催化体系设计的环氧乙烷吸收反应流程,将环氧乙烷的吸收和反应有机的结合在一起,这将大大缩短催化水合法的工艺流程。
This paper describes the application of supercritical fluid technology in enzymatic reaction, heterogeneous catalytic reaction, organometallic reaction, homogeneous catalytic reaction, macromolecular polymerization, supercritical water reaction. 综合评述了超临界流体技术在酶催化反应、多相催化反应、金属有机反应、均相催化反应、高分子聚合反应、超临界水化学反应中的应用。
Study on Electrochemical Methods of Controlled Convolution& A simple electron transfer reaction followed by a homogeneous catalytic reaction(ⅰ) 控制卷积量变化的电化学方法研究&伴有后续均相催化反应的电极过程(Ⅰ)
In the literature, oxidative carbonylation method for DPC synthesis uses homogeneous catalytic reaction. In the case, it is not easy to scale up the process due to problems of product separation and catalyst recovery. 但目前国内外大多采用均相催化氧化羰基化合成DPC,由于均相催化存在着催化剂回收、产品后续分离困难等问题,致使该工艺的开发举步为艰。
Homogeneous hydrogenation of Succinic anhydride to γ-butyrolactone using various metal complexes has been studied. The effects of ligand, solvent and PPh 3/ Ru mole ratio on catalytic reaction have been investigated. 研究了不同催化剂对琥珀酸酐加氢生成γ-丁内酯的反应,并考察了配体、溶剂及PPh3/Ru摩尔比对催化反应的影响。
Catalytic reaction can be divided into two types, Homogeneous and heterogeneous catalytic reaction, the latter dominated. 催化反应分为均相和多相两种,以后者为主。
In the homogeneous catalytic reaction between fine chemicals and catalytic reactions, ionic liquid has below disadvantages: large dosage of ionic liquid; difficulty in separating the catalyst from catalytic system. 在精细化工与催化反应的均相催化反应中,离子液体以下几个缺点:离子液体的用量大;在催化体系中催化剂分离较困难。
Homogeneous catalytic oxidation system has faster reaction and simple operation, but the manganese ion may cause the second pollution to the environment and the catalyst is hard to be recycled. 其中,均相催化氧化技术虽然操作简便、反应迅速,但存在因催化剂不易回收再利用而造成的成本高、Mn2+对自然环境可能造成潜在的二次污染和生物毒性等问题。