发布时间：

2026-09-18

论文名称：

MOF-Derived Ni-Ir/CeO2@SiO2 Catalyst with Full Spectrum Utilization Ability for Anti-Coking Photothermal Dry Reforming of Methane

发表刊物：

Journal of Alloys and Compounds

摘要：

Photothermal synergistic catalysis for dry reforming of methane (PTSC-DRM) has garnered attention for its ability to efficiently convert CH4 and CO2 into syngas by coupling thermal and renewable solar energy. A critical challenge in this field is the development of catalysts that achieve both full-spectrum utilization and excellent anti-coking performance. This study presents a Ni-Ir/CeO2@SiO2 catalyst derived from a metal-organic framework (MOF). By loading a well-dispersed Ni-Ir bimetallic alloy onto MOF-derived CeO2, we achieved synergistic activation of CO2 and CH4, while the SiO2 shell enhanced full solar spectrum utilization. Under PTSC conditions at 650 °C, this catalyst exhibited CO2 and CH4 conversion of 80.9 % and 74.8 %, respectively. After continuous operation at 600 °C for 180 h, it maintained a very low coking amount of 3.21 % (coking rate of 0.178 mgC·gcat−1·h−1). Characterization results, including PL, indicated that the Ni-Ir/CeO2@SiO2 catalyst features a significantly optimized band gap structure (2.01 eV) and improved photogenerated electron lifetime. CO2-TPD and XPS analyses revealed the synergistic effect of the Ni-Ir bimetal to enhance CO2 activation and coking resistance. This research provides innovative structural design concepts and theoretical support for developing PTSC-DRM catalysts with high activity, anti-coking properties, and full-spectrum solar energy utilization.

合写作者：

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

学科门类：

工学

文献类型：

J

卷号：

1039

页面范围：

183091

是否译文：

否

发表时间：

2025-09-10

收录刊物：

SCI