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- Acetylation between alcohol and benzoyl oxide was carried out using ZnBr2 as a Lewis acid catalyst in solvent-free condition. Some structures were characterized by NMR and IR. 以溴化锌为催化剂,在无溶剂条件下实现了醇与苯甲酸酐的酰化反应,部分产物经NMR和ir表征。
- Application of Green Lewis acid Catalyst - Indium Trihalide in Organic Synthesis 绿色路易斯酸三卤化铟在有机合成中的应用
- Study on Preparation and Catalytic Activity of a New Polymer Lewis Acid Catalyst 一种新的高分子Lewis酸催化剂的制备及其催化活性的研究
- A LEWIS ACID CATALYST SUPPORTED BY POLYMER POLYSTYRENE-TITANIUM TETRACHLORIDE COMPLEX 高分子载体Lewis酸催化剂聚苯乙烯-四氯化钛复合物
- Progress on Preparation and Application of Supported Lewis Acid Catalysts 负载型Lewis酸催化剂的制备与应用进展
- To optimize the process of prepartion isorotenone from rotenone by using Lewis acid AlCl3 as catalyst. 为了优化鱼藤酮异构化制备异鱼藤酮的工艺。采用三氯化铝催化下异构化。
- FePO 4 and AlPO 4 distribute at intervals, and there exist Lewis base sites (P=O and P-O-Fe) and Lewis acid sites (Fe 3+ and Al 3+) on the catalyst surface. FePO4 和AlPO4 间隔分布在催化剂表面 ;形成Lewis碱位 (P =O ;P O Fe)和Lewis酸位 (Fe3 + ;Al3 + ) .
- The results on synthesis of tetracosene (C 24 olefins)by dimerization with a complex composed of Lewis acid (L) and complexing agent A as catalyst are reported. 研究以L酸和络合剂A配制的络合物为催化剂,用于四聚丙烯齐聚制备二十四碳烯。
- On the other hand, both Br? nsted and Lewis acid sites are observed on PW/USY catalysts. 由于PW与USY孔壁的弱相互作用,PW和USY的酸性中心得到保存,PW/USY催化剂的酸量较USY和PW有较大提高,其表面同时存在B(Br?nsted)酸和L(Lewis)酸中心。
- Glycol glucoside was prepared from glucose and ethylene glycol in the presence of acid catalyst. 在酸性催化剂下,由葡萄糖和乙二醇经缩醛化反应制备了乙二醇葡糖苷。
- There existed both Lewis acid sites(Fe~(3+),Mo~(6+)) and Lewis base sites(oxygen of Mo=O and Mo-O-Fe bond) on the surface of the catalysts. 催化剂表面由Lewis碱位(MoO键的端氧和Fe-O-Mo键中的桥氧)及Lewis酸位构成。
- Trimethylsilyl cyclopropyl ethers can react with the silica gel to form the cyclopropanols when Lewis acid such as ZnX2 existed. 环丙烷基硅醚在卤化锌的作用下能够与硅胶反应生成环丙基醇。
- Solid acid catalyst can be substituted for sulphuric acid as esterification catalyst. 固体酸催化剂是能够代替硫酸作为酯化的催化剂。
- Researches in and application of Lewis acid,Bronsted acid,alkali, alkaline earth and molecular sieve catalysts were described in detail. 对采取烷基化法和酰基化法合成2,6-二烷基萘的工艺路线,尤其对所使用催化剂的研究进展进行了评述。
- Dioctyl phthalate was synthesized using di n octyl tin oxide as an aprotic acid catalyst. 用氧化二辛基锡催化合成邻苯二甲酸二辛酯。
- Researches in and application of Lewis acid, Bronsted acid, alkali, alkaline earth and molecular sieve catalysts were described in detail. 对采取烷基化法和酰基化法合成2,6-二烷基萘的工艺路线,尤其对所使用催化剂的研究进展进行了评述。
- It point out th solid acid catalyst that we have atudied are all good catalyst for synthesis of diamyl meleat. 指出固体酸催化剂是催化合成马来酸二戊酯的良好催化剂。
- Etherification of butanol with ethylene oxide by a new style solide acid catalyst is investigated. 研究了丁醇和环氧乙烷在一种新型固体酸催化剂上的醚化反应。
- In the presence of aminosulfonic acid catalyst,lactic acid reacted with n butyl alcohol to form n butyl lactate. 以氨基磺酸为催化剂,实现了乳酸与正丁醇反应合成乳酸正丁酯。
- The results indicated that the composite oxide composition influences its acid characteristics that TS?1 has higher Br?nsted acid sites and TS?4 has higher Lewis acid sites. 实验结果表明;TS系列载体随组成不同;其酸性特征也不一样;TS 1具有较多的B酸位;而TS 4则具有较强的L酸.