Efficient propane mineralization over unsaturated Pd cluster/CeO2 with prominent C-C cleavage capacity driven by inherent oxygen activation ability

Lianghui Xia; Shuai Xu; Yanfei Jian; Xiangbo Feng; Zeyu Jiang; Jingjing Wang; Yuliang Li; Yao Wang; Shouning Chai; Yujie Liu; Honggeng Peng; Reem Albilali; Chi He

doi:10.1016/j.jhazmat.2023.132509

Efficient propane mineralization over unsaturated Pd cluster/CeO₂ with prominent C-C cleavage capacity driven by inherent oxygen activation ability

J Hazard Mater. 2024 Jan 5:461:132509. doi: 10.1016/j.jhazmat.2023.132509. Epub 2023 Sep 12.

Authors

Lianghui Xia¹, Shuai Xu², Yanfei Jian¹, Xiangbo Feng³, Zeyu Jiang¹, Jingjing Wang¹, Yuliang Li², Yao Wang¹, Shouning Chai¹, Yujie Liu¹, Honggeng Peng⁴, Reem Albilali⁵, Chi He⁶

Affiliations

¹ State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China.
² Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region, Ministry of Education, School of Water and Environment, Chang'an University, Xi'an 710064, PR China.
³ Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, PR China. Electronic address: fengxiangbo@xjtu.edu.cn.
⁴ School of Resources and Environment, Nanchang University, Nanchang 330031, Jiangxi, PR China. Electronic address: penghonggen@ncu.edu.cn.
⁵ Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia.
⁶ State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, PR China; National Engineering Laboratory for VOCs Pollution Control Material & Technology, University of Chinese Academy of Sciences, Beijing 101408, PR China. Electronic address: chi_he@xjtu.edu.cn.

PMID: 37741210
DOI: 10.1016/j.jhazmat.2023.132509

Abstract

Light alkanes extensively presented in industrial exhausts have led tremendous harm to the atmospheric environment and human health. However, the catalytic destruction of light alkanes generally operates at elevated temperatures and the consequent reaction by-products are inevitably produced. It is therefore of great significance to engineer catalysts with superior thermal stability, internal activity and selectivity. Herein, we developed a Pd cluster/CeO₂ catalyst (Pd_n/CeO₂) by a scalable deposition precipitation strategy, which demonstrates unexpected activity and thermal stability in the presence of 5% H₂O attributing to abundant unsaturated Pd metal sites and excellent oxygen dissociation performance. Pd_n/CeO₂ possesses a highly efficient C-C cleavage capability due to the persistent formation of a large number of oxygen vacancies. In comparison, the Pd₁/CeO₂ catalyst, which is preferential for C-H bond cleavage and inactive for C-C bond cracking, produces remarkable hazardous organic by-products such as propyne and propylene, inhibiting the continuous decomposition of propane. The present study sheds critical insights into engineering efficient and stable catalysts for light alkane destruction.

Keywords: C-C bond dissociation; Oxygen vacancies; Propane destruction; Selectivity; Thermal stability.