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有着重要的应用，全球市场价值达 860 亿英镑。然而，它们的工业生产涉及有毒有害的原材料，例如二异氰酸酯和光气，因此，开发避免使用此类致命原材料来生产有用塑料的绿色方法是当今社会的迫切需要。该奖学金旨在通过二醇/二胺与甲醇的脱氢偶联过程开发一种新的绿色可持续方法来合成此类塑料。所提出的方法将用甲醇替代致命试剂（例如二异氰酸酯和光气）的使用。它不仅比目前使用的试剂毒性更小、更便宜，而且是可再生的，可以由生物质或二氧化碳生产。合成聚合物在环境研究、药物等多个领域的潜在应用。该提案中概述的研究的成功将有利于环境、经济和人类安全。另一个相关且严重的问题是塑料污染。事实上，超过 100 万只鸟类和超过 10 万只海洋哺乳动物因误食或被塑料垃圾缠住而死亡，除了危害野生动物之外，塑料垃圾还是一种尚未开发的资源，因为其现有用途很少且效率低下。经济总体而言，采用催化脱氢（用于塑料合成）和氢化（用于降解）的组合方法，通过化学回收聚脲、聚氨酯和聚碳酸酯类型的塑料废物的新途径来挖掘塑料废物的潜力。该计划设想建立塑料闭环生产，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?

• 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

Direct Chemoselective Reduction of Plant Oils using Silane Catalysed by Rh(III) Complexes at Ambient Temperature

Rh(III) 配合物催化的硅烷在环境温度下直接化学选择性还原植物油

• DOI: 10.1039/d3su00481c
• 发表时间: 2024
• 期刊: RSC Sustainability
• 作者: Prieto-Pascual U