发布时间：

2026-09-18

论文名称：

Tailored Interfaces Promoting Photo-Activation of Molecular Enclosed CO2 on MOF-Derived Ni/CeZrO2 for Photothermal Synergistic Dry Reforming of Methane

发表刊物：

Chemical Engineering Journal

摘要：

Photothermal synergistic catalysis dry reforming of methane (PTSC-DRM) has attracted considerable interest due to its capability to convert CH4 and CO2 into syngas under mild conditions. The development of high-performance catalysts that efficiently harness both light and heat while resisting carbon deposition remains challenging. In this study, we present a Ni/CeZrO2 catalyst derived from metal-organic frameworks (MOF). Characterization techniques such as TEM confirmed the presence of abundant interface sites, which enhance the metal-support interactions. This configuration facilitates the establishment of a CO2 molecular fence around nickel nanoparticles, thereby increasing reaction rates and mitigating carbon deposition through enhanced CO2 photoactivation. At 650 °C, the conversion rates of CH4 and CO2 reached 63.9 % and 71.1 %, respectively. In situ DRFITS and CO2-TPD characterization, along with theoretical calculations, revealed superior CO2 adsorption at the Ni-O-Zr sites, promoting the formation of carbon-tolerant intermediates (CHxO*) under light irradiation, which are subsequently oxidized by OH* to produce CO and H2. This remarkable light-induced decarbonization mechanism allows the catalyst to effectively suppress carbon deposition and accelerate carbon oxidation. At 600 °C, unlike the severe carbon accumulation observed with Ni/CeO2 during 70 h of online testing, the Ni/CeZrO2 catalyst maintains stable PTSC-DRM activity for over 250 h without significant performance degradation.

合写作者：

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

学科门类：

工学

文献类型：

J

卷号：

512

页面范围：

162499

是否译文：

否

发表时间：

2025-05-15

收录刊物：

SCI