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      Capturing ethylene glycol with dimethyl carbonate towards depolymerisation of polyethylene terephthalate at ambient temperature

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          Abstract

          A strategy of capturing ethylene glycol with dimethyl carbonate in the catalytic methanolysis of polyethylene terephthalate enabled depolymerization at ambient temperature.

          Abstract

          Depolymerisation of polyethylene terephthalate (PET) via alkali metal alkoxide catalysed methanolysis efficiently proceeded at ambient temperature by capturing ethylene glycol (EG) with dimethyl carbonate (DMC), which biased the equilibrium toward dimethyl terephthalate (DMT) due to the thermal stability of ethylene carbonate (EC).

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          Production, use, and fate of all plastics ever made

          We present the first ever global account of the production, use, and end-of-life fate of all plastics ever made by humankind.
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            Marine pollution. Plastic waste inputs from land into the ocean.

            Plastic debris in the marine environment is widely documented, but the quantity of plastic entering the ocean from waste generated on land is unknown. By linking worldwide data on solid waste, population density, and economic status, we estimated the mass of land-based plastic waste entering the ocean. We calculate that 275 million metric tons (MT) of plastic waste was generated in 192 coastal countries in 2010, with 4.8 to 12.7 million MT entering the ocean. Population size and the quality of waste management systems largely determine which countries contribute the greatest mass of uncaptured waste available to become plastic marine debris. Without waste management infrastructure improvements, the cumulative quantity of plastic waste available to enter the ocean from land is predicted to increase by an order of magnitude by 2025.
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              Challenges for Rechargeable Li Batteries†

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                Author and article information

                Contributors
                (View ORCID Profile)
                (View ORCID Profile)
                Journal
                GRCHFJ
                Green Chemistry
                Green Chem.
                Royal Society of Chemistry (RSC)
                1463-9262
                1463-9270
                November 29 2021
                2021
                : 23
                : 23
                : 9412-9416
                Affiliations
                [1 ]Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology, 305-8565, Tsukuba, Japan
                Article
                10.1039/D1GC02298A
                3eed84f7-5d3a-4be1-a5fc-db89aba188c9
                © 2021

                http://rsc.li/journals-terms-of-use

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