发布时间：

2026-09-18

论文名称：

Enhanced Photothermal Synergistic Catalysis of Dry Reforming of Methane on High Metal Dispersion MOF-Derived Ni/CeO2 Catalysts

发表刊物：

Journal of Environmental Chemical Engineering

摘要：

A series of MOF-derived Ni/CeO2 (MD-Ni/CeO2) catalysts with varying loadings (0.5 wt%-5wt%) were successfully synthesized for photothermal synergistic catalysis of dry reforming of methane (PTSC-DRM). BET and HR-TEM results indicated that MD-Ni/CeO2 exhibited high specific surface area and nickel dispersion. A systematic study was conducted to investigate the effect of nickel loading on the activity and stability through catalytic evaluation and characterization. The results demonstrated that higher loadings tend to cause carbon deposition on the catalyst, while lower loadings are not favorable for H2 production. The MD-Ni/CeO2 catalyst with a 3 wt% loading was identified as the optimal concentration, achieving CO2 and CH4 conversion of 72.42 % and 66.93 % at 650°C, respectively, along with H2 and CO yields of 169.22 and 182.26 mmol·g−1·h−1. It also maintained good stability during a continuous catalytic evaluation over 70 h. XPS, CO pulse adsorption, and H2-TPR results indicate that the 3 wt% MD-Ni/CeO2 catalyst possesses relatively stable nickel nanoparticles, the highest concentration of oxygen vacancies, and the most active oxygen species. This enhances the synergistic effect between Ni and CeO2, thereby improving light absorption capacity and carbon dioxide activation ability, which in turn enhances catalytic activity and stability. Furthermore, density functional theory revealed the promoting effect of oxygen vacancies on CO2 adsorption on MD-Ni/CeO2.

合写作者：

Yuhao Liu, Xu Liu, Dan Li, Tengfei Li, Zhao Jiang, Yang Guo（通讯作者）

学科门类：

工学

文献类型：

J

卷号：

13

期号：

6

页面范围：

119293

是否译文：

否

发表时间：

2025-09-14

收录刊物：

SCI