{"title":"利用 Zn-Co DMC/c-CTA 催化系统提高生产二氧化碳基多元醇的活性","authors":"Tao Liu, Youcai Zhu, Yue Mu, Xindi Feng, Zhen Liu","doi":"10.1016/j.mcat.2024.114693","DOIUrl":null,"url":null,"abstract":"<div><div>CO<sub>2</sub>-based polyols have a unique terminal hydroxyl group structure that makes them suitable for the production of high-performance polyurethane foams. Zn-Co double metal cyanides (DMC) are an important class of catalysts for the copolymerization reaction of CO<sub>2</sub> with propylene oxide (PO). In the DMC-catalyzed CO<sub>2</sub>/PO copolymerization to produce CO<sub>2</sub>-based polyols, the crucial role of chain transfer agents (CTAs) is emphasized. In this work, a high-performance composite CTA (c-CTA) was successfully developed by investigating various dicarboxylic acids and polypropylene glycol (PPG-400) as CTAs. This system combines the high reaction rate of the DMC/PPG-400 system with the high CO<sub>2</sub> insertion rate of the DMC/sebacic acid (SA) system, achieving 2-3 times higher activity than that of single CTA (PPG-400 or SA), reaching 0.5 kg/g. The molecular characteristics of the CO<sub>2</sub>-based polyols synthesized by different DMC/CTAs systems were analyzed by FTIR and <sup>1</sup>H NMR. The reasons for the high catalytic activity of the DMC/c-CTA system were elucidated by analyzing the hydrogen bond distribution in each DMC/CTA systems. Overall, this work provides a theoretical guidance for the development of novel CO<sub>2</sub>-based materials with high industrial application value.</div></div>","PeriodicalId":393,"journal":{"name":"Molecular Catalysis","volume":"571 ","pages":"Article 114693"},"PeriodicalIF":3.9000,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhanced activity for producing CO2-based polyols enabled by Zn-Co DMC/c-CTA catalytic system\",\"authors\":\"Tao Liu, Youcai Zhu, Yue Mu, Xindi Feng, Zhen Liu\",\"doi\":\"10.1016/j.mcat.2024.114693\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>CO<sub>2</sub>-based polyols have a unique terminal hydroxyl group structure that makes them suitable for the production of high-performance polyurethane foams. Zn-Co double metal cyanides (DMC) are an important class of catalysts for the copolymerization reaction of CO<sub>2</sub> with propylene oxide (PO). In the DMC-catalyzed CO<sub>2</sub>/PO copolymerization to produce CO<sub>2</sub>-based polyols, the crucial role of chain transfer agents (CTAs) is emphasized. In this work, a high-performance composite CTA (c-CTA) was successfully developed by investigating various dicarboxylic acids and polypropylene glycol (PPG-400) as CTAs. This system combines the high reaction rate of the DMC/PPG-400 system with the high CO<sub>2</sub> insertion rate of the DMC/sebacic acid (SA) system, achieving 2-3 times higher activity than that of single CTA (PPG-400 or SA), reaching 0.5 kg/g. The molecular characteristics of the CO<sub>2</sub>-based polyols synthesized by different DMC/CTAs systems were analyzed by FTIR and <sup>1</sup>H NMR. The reasons for the high catalytic activity of the DMC/c-CTA system were elucidated by analyzing the hydrogen bond distribution in each DMC/CTA systems. Overall, this work provides a theoretical guidance for the development of novel CO<sub>2</sub>-based materials with high industrial application value.</div></div>\",\"PeriodicalId\":393,\"journal\":{\"name\":\"Molecular Catalysis\",\"volume\":\"571 \",\"pages\":\"Article 114693\"},\"PeriodicalIF\":3.9000,\"publicationDate\":\"2024-11-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Molecular Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2468823124008757\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Molecular Catalysis","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468823124008757","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Enhanced activity for producing CO2-based polyols enabled by Zn-Co DMC/c-CTA catalytic system
CO2-based polyols have a unique terminal hydroxyl group structure that makes them suitable for the production of high-performance polyurethane foams. Zn-Co double metal cyanides (DMC) are an important class of catalysts for the copolymerization reaction of CO2 with propylene oxide (PO). In the DMC-catalyzed CO2/PO copolymerization to produce CO2-based polyols, the crucial role of chain transfer agents (CTAs) is emphasized. In this work, a high-performance composite CTA (c-CTA) was successfully developed by investigating various dicarboxylic acids and polypropylene glycol (PPG-400) as CTAs. This system combines the high reaction rate of the DMC/PPG-400 system with the high CO2 insertion rate of the DMC/sebacic acid (SA) system, achieving 2-3 times higher activity than that of single CTA (PPG-400 or SA), reaching 0.5 kg/g. The molecular characteristics of the CO2-based polyols synthesized by different DMC/CTAs systems were analyzed by FTIR and 1H NMR. The reasons for the high catalytic activity of the DMC/c-CTA system were elucidated by analyzing the hydrogen bond distribution in each DMC/CTA systems. Overall, this work provides a theoretical guidance for the development of novel CO2-based materials with high industrial application value.
期刊介绍：
Molecular Catalysis publishes full papers that are original, rigorous, and scholarly contributions examining the molecular and atomic aspects of catalytic activation and reaction mechanisms. The fields covered are:
Heterogeneous catalysis including immobilized molecular catalysts
Homogeneous catalysis including organocatalysis, organometallic catalysis and biocatalysis
Photo- and electrochemistry
Theoretical aspects of catalysis analyzed by computational methods
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