{"id":80830,"date":"2020-11-02T06:55:28","date_gmt":"2020-11-02T05:55:28","guid":{"rendered":"https:\/\/rss.nova-institut.net\/public.php?url=https%3A%2F%2Fwww.chemie.de%2Fnews%2F1168337%2Ferster-katalysator-seiner-art-ahmt-natuerliche-prozesse-zum-abbau-von-kunststoffen-nach.html%3FWT.mc_id%3Dca0065"},"modified":"2020-11-01T14:06:35","modified_gmt":"2020-11-01T13:06:35","slug":"a-first-of-its-kind-catalyst-mimics-natural-processes-to-break-down-plastic-and-produce-valuable-new-products","status":"publish","type":"post","link":"https:\/\/renewable-carbon.eu\/news\/a-first-of-its-kind-catalyst-mimics-natural-processes-to-break-down-plastic-and-produce-valuable-new-products\/","title":{"rendered":"A first-of-its-kind catalyst mimics natural processes to break down plastic and produce valuable new products"},"content":{"rendered":"

While plastics recycling is not new science, current processes don\u2019t make it economically worthwhile– waste plastics get \u201cdown-cycled\u201d into lower grade, less useful material. It\u2019s a challenge that continues to be an obstacle in tackling a growing global pollution crisis in single use plastics.<\/strong><\/p>\n

A multi-institutional team of scientists led by the U.S. Department of Energy\u2019s Ames Laboratory has developed a first-of-its-kind catalyst that is able to process polyolefin plastics such as polyethylene and polypropylene, types of polymers widely used in things like plastic grocery bags, milk jugs, shampoo bottles, toys, and food containers. The process results in uniform, high-quality components that can be used to produce fuels, solvents, and lubricating oils, products that have high value and could potentially turn these and other used plastics into an untapped resource.<\/p>\n

\u201cWe\u2019ve made a big step forward with this work,\u201d said Aaron Sadow, a scientist at Ames Laboratory and the Director of the Institute for Cooperative Upcycling of Plastics (iCOUP). \u201cWe hypothesized that we could borrow from nature, and mimic the processes by which enzymes precisely break apart macromolecules like proteins and cellulose. We succeeded in doing that, and we\u2019re excited to pursue optimizing and developing this process further.\u201d<\/p>\n

The unique process relies on nanoparticle technology<\/a>. Ames Lab scientist Wenyu Huang designed a mesoporous silica nanoparticle consisting of a core of platinum with catalytic active sites, surrounded by long silica pores, or channels, through which the long polymer chains thread through to the catalyst. With this design, the catalyst is able to hold on to and cleave the longer polymer chains into consistent, uniform shorter pieces that have the most potential to be upcycled into new, more useful end products.<\/p>\n

\u201cThis type of controlled catalysis process has never before been designed based on inorganic materials,\u201d Huang, who specializes in the design of structurally well-defined nano-catalysts. \u201cWe were able to show that the catalytic process is capable of performing multiple identical deconstruction steps on the same molecule before releasing it.\u201d<\/p>\n

Ames Laboratory\u2019s solid state NMR expert Fred Perras\u2019 measurements allowed the team to scrutinize the catalyst\u2019s activity at the atomic scale, and confirmed that the long polymer chains moved readily through the catalyst pores in the manner resembling the enzymatic processes that the scientists were aiming to emulate.<\/p>\n

This research will be expanded and continued under direction of the Institute for Cooperative Upcycling of Plastics (iCOUP), led by Ames Laboratory. iCOUP is an Energy Frontier Research Center <\/a>consisting of scientists from Ames Laboratory, Argonne National Laboratory, UC Santa Barbara, University of South Carolina, Cornell University, Northwestern University, and the University of Illinois Urbana-Champaign.<\/p>\n

The research is further discussed in the paper, \u201cCatalytic upcycling of high-density polyethylene via a processive mechanism,<\/a>\u201d authored by Akalanka Tennakoon\u200a, Xun Wu, Alexander L. Paterson\u200a, Smita Patnaik, Yuchen Pei, Anne M. LaPointe, Salai C. Ammal\u200a, Ryan A. Hackler, Andreas Heyden, Igor I. Slowing\u200a, Geoffrey W. Coates, Massimiliano Delferro\u200a, Baron Peters, Wenyu Huang\u200a, Aaron D. Sadow\u200a, and Fr\u00e9d\u00e9ric A. Perras; and published in Nature Catalysis.<\/p>\n

Ames Laboratory<\/a> is a U.S. Department of Energy<\/a> Office of Science<\/a> national laboratory operated by Iowa State University. Ames Laboratory creates innovative materials, technologies and energy solutions. We use our expertise, unique capabilities and interdisciplinary collaborations to solve global problems. DOE\u2019s Office of Science is the single largest supporter of basic research in the physical sciences in the United States, and is working to address some of the most pressing challenges of our time. For more information, please visit science.energy.gov<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Kunststoffrecycling ist zwar keine neue Wissenschaft, aber durch die derzeitigen Verfahren lohnt es…<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_seopress_robots_primary_cat":"","nova_meta_subtitle":"","footnotes":""},"categories":[17143],"tags":[15152,6162,13345],"supplier":[2250,11236],"class_list":["post-80830","post","type-post","status-publish","format-standard","hentry","category-recycling","tag-catalyst","tag-cellulose","tag-plastic","supplier-ames-laboratory-us-department-of-energy","supplier-u-s-department-of-energy"],"_links":{"self":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/80830","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/comments?post=80830"}],"version-history":[{"count":0,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/posts\/80830\/revisions"}],"wp:attachment":[{"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/media?parent=80830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/categories?post=80830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/tags?post=80830"},{"taxonomy":"supplier","embeddable":true,"href":"https:\/\/renewable-carbon.eu\/news\/wp-json\/wp\/v2\/supplier?post=80830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}