Ghosh Sourav, Ourlin Thibault, Fazzini Pier-Francesco, Lacroix Lise-Marie, Tricard Simon, Esvan Jerome, Cayez Simon, Chaudret Bruno
LPCNO (Laboratoire de Physique et Chimie des Nano-Objets), Université de Toulouse, CNRS, INSA, UPS, 31077, Toulouse, France.
CIRIMAT-ENSIACET, INP-ENSIACET, 4 allée Emile Monso, BP 44362, 31030, Toulouse cedex 4, France.
ChemSusChem. 2023 Jan 9;16(1):e202201724. doi: 10.1002/cssc.202201724. Epub 2022 Dec 7.
A new selective and efficient catalytic system for magnetically induced catalytic CO methanation was developed, composed of an abundant iron-based heating agent, namely a commercial iron wool, combined with supported Nickel nanoparticles (Ni NPs) as catalysts. The effect of metal oxide support was evaluated by preparing different 10 wt % Ni catalyst (TiO , ZrO , CeO , and CeZrO ) via organometallic decomposition route. As-prepared catalysts were thoroughly characterized using powder X-ray diffraction, electron microscopy, elemental analysis, vibrating sample magnetometer, and X-ray photoelectron spectroscopy techniques. High conversion and selectivity toward methane were observed at mid-temperature range, hence improving energy efficiency of the process with respect to the previous results under magnetic heating conditions. To gain further insight into the catalytic system, the effects of the synthesis method and of 0.5 wt % Ru doping were evaluated. Finally, the dynamic nature of magnetically induced heating was demonstrated through fast stop-and-go experiments, proving the suitability of this technology for the storage of intermittent renewable energy through P2G process.
开发了一种用于磁诱导催化CO甲烷化的新型选择性高效催化体系，该体系由一种丰富的铁基加热剂（即商业铁棉）与负载型镍纳米颗粒（Ni NPs）作为催化剂组成。通过有机金属分解路线制备不同的10 wt% Ni催化剂（TiO 、ZrO 、CeO 和CeZrO ）来评估金属氧化物载体的效果。使用粉末X射线衍射、电子显微镜、元素分析、振动样品磁强计和X射线光电子能谱技术对制备的催化剂进行了全面表征。在中温范围内观察到对甲烷的高转化率和选择性，因此相对于之前磁加热条件下的结果提高了该过程的能源效率。为了进一步深入了解催化体系，评估了合成方法和0.5 wt% Ru掺杂的影响。最后，通过快速启停实验证明了磁诱导加热的动态特性，证明了该技术通过P2G过程存储间歇性可再生能源的适用性。
