题目：

Layered Double Hydroxide Derivatives for Polyolefin Upcycling

作者：

Mingyu Chu^1#, Xianpeng Wang^,2, Xuchun Wang,³ Panpan Xu⁴, Lin Zhang¹,Shengming Li¹, Kun Feng¹, Jun Zhong¹, Lu Wang^1*, Youyong Li¹, Le He¹, Muhan Cao^1*, Qiao Zhang¹, Lifeng Chi^1,2, Jinxing Chen^1*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, P. R. China

²Macao Institute of Materials Science and Engineering, Macau University of Science and Technology, Macau SAR Taipa 999078, P. R. China

³X-ray Science Division, Argonne National Laboratory, Lemont, IL 60439, United States

⁴Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Advanced Materials Division, Suzhou Insti-tute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, P. R. China.

摘要：

While Ru-catalyzed hydrogenolysis holds significant promise in converting waste polyolefins into value-added alkane fuels, a major constraint is the high cost of noble metal catalysts. In this work, we propose, for the first time, that Co-based catalysts derived from CoAl-layered double hydroxide (LDH) are alternatives for efficient polyolefin hydrogenolysis. Leveraging the chemical flexibility of the LDH platform, we reveal that metallic Co species serve as highly efficient active sites for polyolefin hydrogenolysis. Furthermore, we introduced Ni into the Co framework to tackle the issue of restricted hydrogenation ability associated with contiguous Co–Co sites. In-situ analysis indicates that the integration of Ni induces electron transfer and facilitates hydrogen spillover. This dual effect synergistically enhances the hydrogenation/desorption of olefin intermediates, resulting in a significant reduction in the yield of low-value CH₄ from 27.1 to 12.6%. Through leveraging the unique properties of LDH, we have developed efficient and cost-effective catalysts for the sustainable recycling and valorization of waste polyolefin materials.

影响因子：

16.383

分区情况：

一区

链接：

https://pubs.acs.org/doi/10.1021/jacs.4c00327