{"id":38199,"date":"2026-05-29T00:10:59","date_gmt":"2026-05-28T18:25:59","guid":{"rendered":"https:\/\/www.revoscience.com\/en\/?p=38199"},"modified":"2026-05-29T00:12:20","modified_gmt":"2026-05-28T18:27:20","slug":"chinese-researchers-unveil-scalable-catalyst-strategy-to-boost-plastic-waste-upcycling","status":"publish","type":"post","link":"https:\/\/www.revoscience.com\/en\/chinese-researchers-unveil-scalable-catalyst-strategy-to-boost-plastic-waste-upcycling\/","title":{"rendered":"Chinese researchers unveil scalable catalyst strategy to boost plastic waste upcycling"},"content":{"rendered":"\n
\"\"
Schematic illustration of the entropy-confinement effect induced by the silane coupling process.<\/sup><\/em><\/figcaption><\/figure>\n\n\n\n

BEIJING, May 29 \u2013 A team of researchers in China has unveiled a new catalyst engineering strategy that could accelerate efforts to recycle plastic waste, according to a study published in Engineering<\/em>.<\/p>\n\n\n\n

Scientists from Soochow University and partner institutions said they developed a universal entropy\u2011reduction method that improves the hydrogenolysis of waste polyolefins \u2013 the most widely used plastics \u2013 by reconstructing catalyst surface polarity. The approach, they said, offers a scalable pathway for chemical upcycling in the circular economy.<\/p>\n\n\n\n

Polyolefin hydrogenolysis has long been viewed as a promising recycling route, but the high entropy of polymer chains creates thermodynamic barriers that limit catalytic activity. Previous entropy\u2011reduction techniques often relied on precisely designed porous structures, which are difficult to scale and less effective with mixed plastic waste.<\/p>\n\n\n\n

The team modified conventional supported metal catalysts using silane coupling agents, tailoring the polarity match between polymers and catalyst supports. This confined the molecular freedom of polyolefins during hydrogenolysis and stabilized transition\u2011state adsorption.<\/p>\n\n\n\n

Ruthenium\u2011based catalysts prepared via wet\u2011impregnation and modified with silane coupling showed improved performance. Tests confirmed the modification did not cause metal leaching or alter the ruthenium active sites, but transformed catalyst surfaces from hydrophilic to hydrophobic, strengthening van der Waals interactions with polymer chains.<\/p>\n\n\n\n

Further analysis using solid\u2011state nuclear magnetic resonance and molecular dynamics simulations revealed that the modified surfaces reduced conformational entropy and increased adsorption density of polyethylene chains. The enhanced activity was consistent across different oxide supports, including alumina, zirconia and titania.<\/p>\n\n\n\n

The optimized catalyst demonstrated recyclability and stability in repeated runs and long\u2011term tests, and proved effective in converting a range of polyolefin materials \u2013 from low\u2011density and high\u2011density polyethylene to polypropylene \u2013 as well as commercial plastic waste such as bags, films and bottles.<\/p>\n\n\n\n

Researchers said the entropy\u2011engineering approach provides a versatile and scalable modification route for traditional supported metal catalysts, helping overcome entropy\u2011related activity limitations and supporting the development of industrially viable plastic upcycling technologies.<\/p>\n","protected":false},"excerpt":{"rendered":"

BEIJING, May 29 \u2013 A team of researchers in China has unveiled a new catalyst engineering strategy that could accelerate efforts to recycle plastic waste, according to a study published in Engineering.<\/p>\n","protected":false},"author":2,"featured_media":38200,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,17],"tags":[],"class_list":["post-38199","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-innovation","category-research"],"featured_image_urls":{"full":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",819,460,false],"thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-200x200.webp",200,200,true],"medium":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-675x379.webp",675,379,true],"medium_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-768x431.webp",750,421,true],"large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",750,421,false],"1536x1536":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",819,460,false],"2048x2048":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",819,460,false],"ultp_layout_landscape_large":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",819,460,false],"ultp_layout_landscape":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect.webp",819,460,false],"ultp_layout_portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-600x460.webp",600,460,true],"ultp_layout_square":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-600x460.webp",600,460,true],"newspaper-x-single-post":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-760x460.webp",760,460,true],"newspaper-x-recent-post-big":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-550x360.webp",550,360,true],"newspaper-x-recent-post-list-image":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-95x65.webp",95,65,true],"web-stories-poster-portrait":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-640x460.webp",640,460,true],"web-stories-publisher-logo":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-96x96.webp",96,96,true],"web-stories-thumbnail":["https:\/\/www.revoscience.com\/en\/wp-content\/uploads\/2026\/05\/illustration-of-the-entropy-confinement-effect-150x84.webp",150,84,true]},"author_info":{"info":["RevoScience"]},"category_info":"Innovation<\/a> Research<\/a>","tag_info":"Research","comment_count":"0","_links":{"self":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/38199","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/comments?post=38199"}],"version-history":[{"count":2,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/38199\/revisions"}],"predecessor-version":[{"id":38202,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/posts\/38199\/revisions\/38202"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media\/38200"}],"wp:attachment":[{"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/media?parent=38199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/categories?post=38199"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.revoscience.com\/en\/wp-json\/wp\/v2\/tags?post=38199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}