Understanding of tri-reforming of methane over Ni/Mg/Al hydrotalcite-derived catalyst for CO2 utilization from flue gases from natural gas-fired power plants

被引：35

作者：

Swirk Da Costa, Katarzyna ^{[1
,2
,4
]}

Grams, Jacek ^{[3
]}

Motak, Monika ^{[2
]}

Da Costa, Patrick ^{[1
]}

Grzybek, Teresa ^{[2
]}

机构：

[1] Sorbonne Univ, Inst Jean Le Rond dAlembert, CNRS, St Cyr Lecole, France

[2] AGH Univ Sci & Technol, Fac Energy & Fuels, Krakow, Poland

[3] Lodz Univ Technol, Fac Chem, Inst Gen & Ecol Chem, Lodz, Poland

[4] Univ Montpellier, ENSCM, CNRS, ICGM, Montpellier, France

来源：

JOURNAL OF CO2 UTILIZATION | 2020年 / 42卷

关键词：

Tri-reforming of methane; Hydrotalcite; Mixed oxides; Nickel; Flue gas; Carbon dioxide; Syngas; NI-BASED CATALYSTS; PARTIAL OXIDATION; CARBON-MONOXIDE; PERFORMANCE; CONVERSION; STABILITY; HYDROGEN; PROGRESS; SYNGAS;

D O I：

10.1016/j.jcou.2020.101317

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Tri-reforming of methane was examined over Ni/Mg/Al hydrotalcite-derived catalyst for CO2 utilization directly from simulated flue gas mixtures from natural gas-fired power plants. This catalyst showed promising results for the studied experimental conditions, revealing the following order of CH4 conversion: TRM3 (75.9 %) < TRM2 (91.9 %) < TRM1 (98.2 %). The activity trend was related to the Ni crystallite size, with smaller particles leading to increased conversion. The highest TOF value was found for gas feed with elevated CH4 concentration (TRM3), possibly due to a significant contribution of side reactions parallelly occurring during tri-reforming of methane. The HTNi catalyst after TRM3 showed bigger Ni-0 particles, which are prone to participate in the formation of graphitic-like carbon. The presence of encapsulated Ni particles and carbon nanotubes was confirmed by XRD, TGA, HRTEM, and ToF-SIMS for HTNi used in TRM3.

引用

页数：7

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