Converting Plastic Wastes to Naphtha for Closing the Plastic Loop

被引：82

作者：

Li, Lin ^{[1
]}

Luo, Hu ^{[1
]}

Shao, Zilong ^{[1
]}

Zhou, Haozhi ^{[3
]}

Lu, Junwen ^{[1
,2
]}

Chen, Junjun ^{[1
,2
]}

Huang, Chaojie ^{[1
,2
]}

Zhang, Shunan ^{[3
]}

Liu, Xiaofang ^{[1
]}

Xia, Lin ^{[1
]}

Li, Jiong

Wang, Hui ^{[1
,3
]}

Sun, Yuhan ^{[1
,3
,4
]}

机构：

[1] Chinese Acad Sci, Shanghai Adv Res Inst, CAS Key Lab Low Carbon Convers Sci & Engn, Shanghai 201210, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] ShanghaiTech Univ, Inst Carbon Neutral, Shanghai 201203, Peoples R China

[4] Shanghai Inst Cleantech Innovat, Shanghai 201616, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2023年 / 145卷 / 03期

基金：

中国国家自然科学基金;

关键词：

HYDROGENOLYSIS; ACTIVATION;

D O I：

10.1021/jacs.2c11407

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To solve the serious environmental problem and huge resource waste of plastic pollution, we report a tandem catalytic conversion of low-density polyethylene (LDPE) into naphtha, the key feedstock for renewable plastic production. Using beta zeolite and silicalite-1-encapsulated Pt nanoparticles (Pt@S-1), a naphtha yield of 89.5% is obtained with 96.8% selectivity of C5-C9 hydrocarbons at 250 degrees C. The acid sites crack long-chain LDPE into olefin intermediates, which diffuse within the channels of Pt@S-1 to encounter Pt nanoparticles. The hydrogenation over confined metal matches cracking steps by selectively shipping the olefins with right size, and the rapid diffusion boosts the formation of narrow-distributed alkanes. A conceptual upgrading indicates it is suitable for closing the plastic loop, with a significant energy saving of 15% and 30% reduced greenhouse gas emissions.

引用

页码：1847 / 1854

页数：8

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