Preparation method and application of ionic zinc catalyst

• Main Authors: HUANG XIANQIANG, ZONG LINA, ZHOU YINGMEI, JIANG XIUYAN, WANG CONGCONG, KONG FANHOU, ZHANG HAIZHEN, BAI JING
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2024
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a preparation method of an ionic zinc catalyst, which comprises the following steps: reacting salicylaldehyde, tetraethylenepentamine, zinc bromide and methanol in a round-bottom flask, filtering after the reaction is finished, and slowly volatilizing the filtrate to obtain the crystal of the ionic zinc catalyst. The method has the advantages of high reaction speed, simple reaction process, high product purity and simple post-treatment. In a carbon dioxide cycloaddition reaction, the conversion rate is as high as 99%, and the selectivity is as high as 99%. 本发明公开了离子型锌催化剂的制备方法，该种方法将水杨醛、四乙烯五胺、溴化锌、甲醇置于圆底烧瓶中反应，反应完毕后，过滤、滤液缓慢挥发，得到离子型锌催化剂的晶体。本发明方法具有反应速度快、反应过程简单，得到的产品纯度高，后处理简单。在二氧化碳环加成反应中，转化率高达99％，选择性高达99％。