气候变化领域集成服务门户(CCPortal): Valorization of waste biodegradable polyester for methyl methacrylate production

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DOI	10.1038/s41893-023-01082-z
	Valorization of waste biodegradable polyester for methyl methacrylate production
	Sun, Bo; Zhang, Jie; Wang, Maolin; Yu, Shixiang; Xu, Yao; Tian, Shuheng; Gao, Zirui; Xiao, Dequan; Liu, Guosheng; Zhou, Wu; Wang, Meng; Ma, Ding
发表日期	2022
ISSN	2398-9629
页码	11
英文摘要	Biodegradation of polyesters such as polylactic acid (PLA), which could serve as a carbon source for value-added chemicals, leads to CO2 emissions. Here the authors develop a two-step catalytic process to convert PLA into methyl methacrylate, a key building-block molecule, for sustainable valorization of waste PLA. Biodegradable polyesters such as polylactic acid are promising alternatives to conventional plastics as they do not accumulate in the environment upon disposal. However, their biodegradation leads to CO2 emissions. Alternatively, waste biodegradable polyesters could serve as a carbon source for the production of value-added chemicals. Valorization of waste biodegradable polyesters not only avoids CO2 emissions during their biodegradation but also achieves sustainable carbon use. Here, we report a two-step catalytic process to convert polylactic acid waste into methyl methacrylate, a key building-block molecule. Polylactic acid is first transformed into methyl propionate with near-quantitative yields (conversion >99%, selectivity 98%) over the alpha-MoC catalyst in methanol solution, which is followed by reacting the obtained methyl propionate with formaldehyde to produce methyl methacrylate with a conversion of 81% and selectivity of 90%. This study opens up a new path for managing end-of-life biodegradable polyester plastics and contributing to a circular economy.
学科领域	Green & Sustainable Science & Technology; Environmental Sciences; Environmental Studies
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
WOS记录号	WOS:000942695900004
来源期刊	NATURE SUSTAINABILITY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/272812
作者单位	Chinese Academy of Sciences; Peking University; University New Haven; Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Sun, Bo,Zhang, Jie,Wang, Maolin,et al. Valorization of waste biodegradable polyester for methyl methacrylate production[J],2022:11.
APA	Sun, Bo.,Zhang, Jie.,Wang, Maolin.,Yu, Shixiang.,Xu, Yao.,...&Ma, Ding.(2022).Valorization of waste biodegradable polyester for methyl methacrylate production.NATURE SUSTAINABILITY,11.
MLA	Sun, Bo,et al."Valorization of waste biodegradable polyester for methyl methacrylate production".NATURE SUSTAINABILITY (2022):11.