Constructing the Al deficiency in Si-O(H)-Al units based on Pt/ZSM-5 for enhanced hydrocracking of polyethylene into high-quality liquid fuel

doi:10.1007/s12274-024-6894-9

IMR OpenIR

	Constructing the Al deficiency in Si-O(H)-Al units based on Pt/ZSM-5 for enhanced hydrocracking of polyethylene into high-quality liquid fuel
	Zhong, Xia 1,2; Liu, Jie 1,3; Gao, Li 1,2; Chen, Junnan 1,2; Wang, Xiyang 4; Zhang, Ying 1,5; Wu, Yimin A.4; Shakeri, Mozaffar 6; Zhang, Xia 3; Zhang, Bingsen 1,2
通讯作者	Zhang, Bingsen(bszhang@imr.ac.cn)
	2024-08-09
发表期刊	NANO RESEARCH
ISSN	1998-0124
页码	11
摘要	Hydrocracking catalysis is a controllable route to plastic waste upgrading. However, the mismatched acid site-driven C-C cleavage and C=C hydrogenation process on metal restrict the efficiency and selectivity in conventional metal/acid bi-functional catalyst. Herein, we introduce Al deficiency in Si-O(H)-Al structural units of Pt/zeolite socony mobil-5 (Pt/ZSM-5) through discharge driven reduction (DR) process to precisely control the ratio of metal to acid, achieving hydrocracking of low-density polyethylene (LDPE) waste at 270 degrees C with 87.7% conversion and liquid fuel (C5-C21) selectivity of 77.8%. Pair distribution function (PDF) and nuclear magnetic resonance (NMR) spectroscopy demonstrate the partial absent Al sites further resulting short-range local disorder Si-O(H)-Al. Upon pyridine infrared spectroscopy (Py-IR) and CO diffuse reflectance Fourier-transform infrared (CO DRIFT) analysis, the extraction of Al modulates Br & oslash;nsted acid density of Pt/ZSM-5 with DR process (Pt/Z5DR), improves the interaction between Pt and ZSM-5 support, enhances the cationic of Pt. The metal-acid balance and electron-deficient Pt favor the matching speed of light olefins hydrogenation and the cracking of macromolecule intermediates. Moreover, density functional theory (DFT) calculations identify the thermodynamic stability of Pt/Z5DR and moderate adsorption capability towards light olefins. This work confirms the great potential of precisely controlled molar of metal to acid in metal/zeolite catalysts for LDPE upcycling, providing a viable path for dealing with PE plastic wastes.
关键词	plastic upcycling hydrocracking low-density polyethylene liquid fuel Pt zeolites
资助者	National Natural Science Foundation of China ; Iran National Science Foundation ; Research Fund of Shenyang National Laboratory for Materials Science
DOI	10.1007/s12274-024-6894-9
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52161145403] ; Iran National Science Foundation[4001399] ; Research Fund of Shenyang National Laboratory for Materials Science
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:001287477300001
出版者	TSINGHUA UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188847
专题	中国科学院金属研究所
通讯作者	Zhang, Bingsen
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Northeastern Univ, Coll Sci, Dept Chem, Shenyang 110819, Peoples R China 4.Univ Waterloo, Waterloo Inst Nanotechnol, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada 5.Liaoning Petrochem Univ, Sch Petrochem Engn, Fushun 113001, Peoples R China 6.Chem & Chem Engn Res Ctr Iran, Dept Chem & Petr Engn, Lab Heterogeneous Catalysis, Tehran 16363, Iran
推荐引用方式 GB/T 7714	Zhong, Xia,Liu, Jie,Gao, Li,et al. Constructing the Al deficiency in Si-O(H)-Al units based on Pt/ZSM-5 for enhanced hydrocracking of polyethylene into high-quality liquid fuel[J]. NANO RESEARCH,2024:11.
APA	Zhong, Xia.,Liu, Jie.,Gao, Li.,Chen, Junnan.,Wang, Xiyang.,...&Zhang, Bingsen.(2024).Constructing the Al deficiency in Si-O(H)-Al units based on Pt/ZSM-5 for enhanced hydrocracking of polyethylene into high-quality liquid fuel.NANO RESEARCH,11.
MLA	Zhong, Xia,et al."Constructing the Al deficiency in Si-O(H)-Al units based on Pt/ZSM-5 for enhanced hydrocracking of polyethylene into high-quality liquid fuel".NANO RESEARCH (2024):11.