在循环碳酸盐合成中的离子液体催化,用于开发基于大豆油的非异酸聚氨泡
Damian Kiełkiewicz1,2, Agnieszka Siewniak3, Rafał Gaida1
1Łukasiewicz Research Network-Institute of Heavy Organic Synthesis "Blachownia", Energetyków 9, 47-225 Kędzierzyn-Koźle, Poland.
Molecules (Basel, Switzerland)
|August 29, 2024
概括
研究人员开发了一种可持续的方法,使用基于大豆油的循环碳酸盐 (CC) 和离子液体制造非异酸聚氨 (NIPU) 泡. 这种工艺为高效的泡生产提供了更快的凝时间.
科学领域:
- 绿色化学 绿色化学
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
背景情况:
- 由于异酸盐的使用,传统的聚氨会引起环境和健康问题.
- 开发非异酸聚氨 (NIPU) 等可持续替代品对化学工业至关重要.
- 豆油为生物基聚合物合成提供可再生原料.
研究的目的:
- 开发一种高效的方法来合成非异酸聚氨 (NIPU) 泡从豆油衍生的循环碳酸盐 (CC).
- 研究离子液体 (ILs) 在从环氧化大豆油和CO2中合成CC中的催化作用.
- 评估IL合成的CC在NIPU泡生产中的性能,重点关注凝时间和材料特性.
主要方法:
- 从氧化大豆油和二氧化碳 (CO2) 中合成循环碳酸盐 (CC),使用各种离子液体 (IL) 作为催化剂.
- 合成的CC与乙二胺直接反应,在没有中间净化的情况下产生NIPU泡.
- 通过机械测试和形态分析对NIPU泡进行表征.
主要成果:
- 在测试的IL中,1-乙基-3-甲基 ([emim]Br) 显示出最高的选择性 (100%) 和CC收益率 (98%).
- 基于大豆油的CC合成与化物伊米达ILs导致明显更短的凝时间 ([emim]Br的8分50秒) 与TBAB催化剂 (26分15秒) 相比.
- 该研究成功地生产了NIPU泡,由于更快的交叉连接,其性能可能会得到改善.
结论:
- 离子液体,特别是化物和化物,是合成基于大豆油的循环碳酸盐的有效催化剂.
- 开发的方法为NIPU泡生产提供了一个更快,更可持续的途径.
- 需要进一步进行机械和形态分析,以充分描述产生的NIPU泡.
相关概念视频
Esters to Carboxylic Acids: Acid-Catalyzed Hydrolysis
2.8K
Hydrolysis of esters under acidic conditions proceeds through a nucleophilic acyl substitution. In the presence of excess water, the reaction proceeds in a reversible manner, forming carboxylic acids and alcohols.
During hydrolysis, the ester is first activated towards nucleophilic attack through the protonation of the carboxyl oxygen atom by the acid catalyst. The protonation makes the ester carbonyl carbon more electrophilic. In the next step, water acts as a nucleophile and adds to the...
During hydrolysis, the ester is first activated towards nucleophilic attack through the protonation of the carboxyl oxygen atom by the acid catalyst. The protonation makes the ester carbonyl carbon more electrophilic. In the next step, water acts as a nucleophile and adds to the...
2.8K
Olefin Metathesis Polymerization: Overview
2.0K
Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
Ruthenium-based Grubbs catalyst is the most commonly used catalyst for olefin metathesis polymerization. Grubbs catalyst consists...
2.0K
Alkylation of β-Diester Enolates: Malonic Ester Synthesis
3.4K
Malonic ester synthesis is a method to obtain α substituted carboxylic acids from ꞵ-diesters such as diethyl malonate and alkyl halides.
3.4K
Carboxylic Acids to Esters: Acid-Catalyzed (Fischer) Esterification Overview
17.9K
The Fischer esterification reaction was developed by the German chemist Emil Fischer in 1895. It is a condensation reaction between carboxylic acids and alcohols in an acidic medium to give esters and water.
17.9K
Anionic Chain-Growth Polymerization: Overview
2.1K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.1K
Carboxylic Acids to Esters: Acid-Catalyzed (Fischer) Esterification Mechanism
7.8K
Carboxylic acids react with alcohols to yield esters via an acid-catalyzed condensation reaction called Fischer esterification. This is a nucleophilic acyl substitution reaction that proceeds via a tetrahedral intermediate, where a water molecule is eliminated as the leaving group.
7.8K


