PURPOSE: To obtain the catalyst having excellent stability at almost room temperature and excellent curing properties at high temperature and useful for curing an addition reaction cure-type organopolysiloxane composition by mixing a specific silicone resin with a platinum-based catalyst.FUJIKI HIRONAO...
reaction is recovered and, thereafter, is preserved for reusing the same in a process of producing an addition reaction product by subjecting an alkylene oxide and material to be added to the addition reaction in the presence of the resin catalyst and to provide its use.;SOLUTION: The resin ...
aIn addition, reaction temperature had a greater influence on the activity of the catalysts with promoters than that of the catalyst without promoters. 另外,反应温度比那有对催化剂的活动的更加巨大的影响与促进者催化剂,不用促进者。[translate]
ChemInform Abstract: Sc(OTf)3, an Efficient Catalyst for Addition of Allyltrimethylsilane to Aldehydes; Chemoselective Addition to Aldehydes in Presence of... ChemInform Abstract: Sc(OTf)3, an Efficient Catalyst for Addition of Allyltrimethylsilane to Aldehydes; Chemoselective Addition to Aldehydes in ...
The meaning of CATALYST is a substance that enables a chemical reaction to proceed at a usually faster rate or under different conditions (as at a lower temperature) than otherwise possible. How to use catalyst in a sentence. Word History of Catalyst
Catalyst activation is the process of preparing a catalyst for a reaction by depositing the active metal component onto a suitable substrate, allowing for the investigation of its chemical and catalytic properties. AI generated definition based on: Encyclopedia of Interfacial Chemistry, 2018 ...
and dried at room temperature. The resulting product was dissolved in a mixture of water and methanol (1:1) followed by the addition ofl-arginine (1 mmol), K2CO3(1.0 mmol), and NaI (1.0 mmol). The solution was stirred at room temperature for 24 h. the reaction mixture was then washe...
这个口岸不接受 (输出信号) 或取向指定的维度 [translate] athe formation of more active sites on the catalyst promotes further the hydrogenation reaction of olefins formed. 更加活跃的站点的形成在催化剂进一步促进被形成的烯烃的加氢反应。 [translate] ...
The activity after 0.5 h is slightly lower than when the reaction was run for an hour potentially suggesting a slow scavenging of the amine by the acid. This could be expected as dimethyl hexamine has a greasy chain and has therefore more affinity with the core of the micelle than with...
Considering that the homogeneous catalyst is difficult to separate and recover, several heterogeneous catalysts have been suggested for the cyclic addition reactions. Most of these catalysts, however, suffer from low activities or harsh reaction conditions such as, elevated temperature, high pressure of ...