New Directions for the Synthesis and Degradation of Renewable and Recyclable Plastics Using Homogeneous Catalytic (De)hydrogenation

利用均相催化（脱）加氢合成和降解可再生和可回收塑料的新方向

• 批准号: MR/W007460/1
• 负责人: Amit Kumar
• 金额: $ 158.07万
• 依托单位: University of St Andrews
• 依托单位国家: 英国
• 项目类别: Fellowship
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=MR%2FW007460%2F1
• 关键词: New; Directions; Synthesis; Degradation; Renewable

Many of the items we use on a daily basis are made of plastics. In particular, certain types of plastics such as polyureas, polyurethanes, and polycarbonates have significant applications in construction materials and the biomedical industry and have a global market value of £86 billion/year. However, their industrial production involves toxic and hazardous starting materials such as diisocyanates and phosgene gas. Thus, the development of greener methods that avoid such fatal starting materials to produce useful plastic is a pressing need of current society. The proposed fellowship aims to develop a new green and sustainable approach for the synthesis of such plastics by the process of dehydrogenative coupling of diols/diamines with methanol. The proposed methodology will substitute the use of deadly reagents (such as diisocyanates, and phosgene gas) with methanol which is not just less toxic and cheaper than the currently used reagents but is also renewable and can be produced from biomass or CO2. The potential applications of the synthesized polymers in multiple areas such as environmental studies, drug delivery, and medical imaging will also be studied in collaboration with experts in the corresponding areas. The success of the research outlined in this proposal will benefit the environment, the economy, and human safety.Another related and serious problem is that of plastic pollution. In fact, more than 1 million birds and over 100,000 sea mammals die from eating or getting tangled in plastic waste. Aside from harming wildlife, plastic waste is an untapped resource, because existing uses for it are few and inefficient. The proposed program will unlock the economic potential of plastic waste by developing a new route for chemical recycling of plastic wastes of type polyureas, polyurethanes, and polycarbonates using the approach of catalytic hydrogenation. Overall, using a combined approach of catalytic dehydrogenation (for the synthesis of plastic) and hydrogenation (for degradation of plastic waste) this program envisions establishing the closed-loop production of plastics to enable a circular economy, which addresses the economic needs of humanity while reducing harm on the biosphere.

我们日常使用的许多物品都是由塑料制成的。特别是，某些类型的塑料，如聚脲、聚氨酯和聚碳酸酯，在建筑材料和生物医学行业中有着重要的应用，全球市场价值为860亿英镑/年。然而，它们的工业生产涉及有毒和危险的起始材料，如二异氰酸酯和光气。因此，开发更环保的方法，避免这种致命的起始材料来生产有用的塑料是当前社会的迫切需要。拟议的研究金旨在开发一种新的绿色和可持续的方法，通过二醇/二胺与甲醇的缩合偶联工艺合成此类塑料。拟议的方法将用甲醇取代致命试剂（如二异氰酸酯和光气），甲醇不仅比目前使用的试剂毒性更小，更便宜，而且可再生，可以从生物质或二氧化碳中生产。合成聚合物在环境研究、药物输送和医学成像等多个领域的潜在应用也将与相应领域的专家合作进行研究。这项提案中概述的研究的成功将有利于环境、经济和人类安全。另一个相关的严重问题是塑料污染。事实上，超过100万只鸟类和10万只海洋哺乳动物因进食或被塑料垃圾缠绕而死亡。除了危害野生动物，塑料垃圾是一种未开发的资源，因为现有的用途很少而且效率低下。该计划将通过使用催化氢化方法开发聚脲，聚氨酯和聚碳酸酯类塑料废物的化学回收新途径，释放塑料废物的经济潜力。总体而言，该计划采用催化脱氢（用于塑料合成）和加氢（用于塑料废物降解）的组合方法，设想建立塑料的闭环生产，以实现循环经济，满足人类的经济需求，同时减少对生物圈的危害。

项目成果

Dehydrogenation Reactions with 3d Metals

3d 金属的脱氢反应

• DOI: 10.1007/3418_2023_96
• 发表时间: 2024
• 作者: Brodie C

Predicting ruthenium catalysed hydrogenation of esters using machine learning

使用机器学习预测钌催化的酯氢化

• DOI: 10.1039/d3dd00029j
• 发表时间: 2023
• 期刊: Digital Discovery
• 作者: Mishra C

Manganese-Catalyzed Hydrogenation of Amides and Polyurethanes: Is Catalyst Inhibition an Additional Barrier to the Efficient Hydrogenation of Amides and Their Derivatives?

锰催化的酰胺和聚氨酯的氢化：催化剂抑制是否是酰胺及其衍生物有效氢化的额外障碍？

• DOI: 10.1021/acs.organomet.3c00399
• 发表时间: 2024-01-22
• 期刊: Organometallics
• 影响因子: 2.8
• 作者: Luk J;Oates CL;Fuentes Garcia JA;Clarke ML;Kumar A
• 通讯作者: Kumar A

Catalysis for a Sustainable Environment - Reactions, Processes and Applied Technologies

可持续环境的催化 - 反应、过程和应用技术

• DOI: 10.1002/9781119870647.ch16
• 发表时间: 2024
• 作者: Espinosa-Jalapa N

Manganese catalysed dehydrogenative synthesis of polyureas from diformamide and diamines.

• DOI: 10.1039/d3cy00284e
• 发表时间: 2023-06-19
• 期刊: Catalysis science & technology
• 影响因子: 5