The role of size and structure of catalytic active sites in polyolefin hydrogenolysis

IF 11.5 Q1 CHEMISTRY, PHYSICAL
Jueun Kim, Simin Sun, Donghyeon Kim, Byung Gwan Park, Hojeong Lee, Wenyu Huang, Kwangjin An
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引用次数: 0

Abstract

The increasing amount of plastic waste poses serious environmental problems that threaten both ecosystems and human well-being. Hydrogenolysis has been widely studied as an effective approach for converting polyolefins into high-value liquids and waxy fuels. Their multifaceted reaction mechanism, including dehydrogenation, C–C bond cleavage, and hydrogenation, highlights the need for sophisticated catalyst design. The suppression of methane production, a persistent challenge in polyolefin hydrogenolysis, requires precise control of the cleavage site and inhibition of successive C–C bond cleavage. This delicate balance is achieved by carefully tuning the size and structure of metals. In this review, we investigate the effects of the size and structure of active sites on their catalytic activity and selectivity for the hydrogenolysis of polyolefins, including polyethylene and polypropylene. A fundamental understanding of hydrogenolysis mechanisms, combined with strategic synthetic methodologies, is crucial for creating efficient catalysts with tailored properties.

Abstract Image

催化活性位点的大小和结构在聚烯烃氢解中的作用
日益增多的塑料垃圾带来了严重的环境问题,威胁着生态系统和人类福祉。氢解作为一种将聚烯烃转化为高价值液体和含蜡燃料的有效方法,已被广泛研究。聚烯烃的反应机理是多方面的,包括脱氢、C-C 键裂解和氢化,因此需要复杂的催化剂设计。抑制甲烷的产生是聚烯烃氢解过程中的一项长期挑战,需要精确控制裂解位点并抑制连续的 C-C 键裂解。这种微妙的平衡是通过精心调整金属的尺寸和结构来实现的。在本综述中,我们研究了活性位点的大小和结构对聚烯烃(包括聚乙烯和聚丙烯)氢解催化活性和选择性的影响。从根本上了解氢解机理,并结合战略性合成方法,对于创造具有定制特性的高效催化剂至关重要。
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来源期刊
CiteScore
10.50
自引率
6.40%
发文量
0
期刊介绍: Chem Catalysis is a monthly journal that publishes innovative research on fundamental and applied catalysis, providing a platform for researchers across chemistry, chemical engineering, and related fields. It serves as a premier resource for scientists and engineers in academia and industry, covering heterogeneous, homogeneous, and biocatalysis. Emphasizing transformative methods and technologies, the journal aims to advance understanding, introduce novel catalysts, and connect fundamental insights to real-world applications for societal benefit.
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