发布时间：

2026-07-28

论文名称：

Achieving Stable Syngas Production during Photothermal synergistic Dry Reforming of Methane over Layered Double Hydroxides-Based Catalysts with anti-coking Performance

发表刊物：

Catalysis Science & Technology

关键字：

Dry Reforming of Methane, Photothermal Synergistic Catalytic, Layered Double Hydroxide, Nickel-based Catalysts, Carbon Deposition

摘要：

Dry reforming of methane (DRM) offers a promising route to convert CH4 and CO2 into syngas, addressing both greenhouse gas mitigation and carbon resource utilization. However, its practical application is hindered by high energy consumption and severe catalyst deactivation due to coking. Leveraging the structural tunability of layered double hydroxides (LDH), we synthesized three LDH-derived spinel-supported Ni-based catalysts (Ni/XAl2O4, X = Mg, Co, Cu) and evaluated them in photothermal synergistic catalytic DRM (PTSC-DRM). Substituting Cu with Mg in the support markedly increased the specific surface area from 44.81 to 181.29 m2·g-1, significantly enhanced CO2 adsorption capacity, and strengthened the metal-support interactions. Under 600 °C and 2.91 W·cm-2 illumination, Ni/MgAl2O4 achieved CH4 and CO2 conversions of 38.49% and 42.13%, respectively, and maintained stable performance over 45.5 h of continuous operation. The coking rate was drastically reduced from 5.00 mgC·gcat-1·h-1 (for Ni/CoAl2O4) to 0.98 mgC·gcat-1·h-1, with no reactor clogging observed. Mechanistically, light irradiation continuously promotes CO2 activation through photogenerated electron-hole pairs, synergistically enhancing coking resistance alongside the thermal catalytic pathway. This work capitalizes on the structural versatility of LDH materials and provides a new strategy for designing low-cost, high-stability, and coke-resistant catalysts for PTSC-DRM.

合写作者：

Tengfei Li,Yuhao Liu,Lingzhao Kong

第一作者：

Juntao Li

通讯作者：

Yang Guo,Pengjie Miao

学科门类：

工学

文献类型：

J

卷号：

16

期号：

12

页面范围：

4134-4148

是否译文：

否

发表时间：

2026-06-22

收录刊物：

SCI