A perovskite-structured barium zirconate, BaZrO3 (BZ), support is demonstrated to enhance the activity, relative to γ-Al2O3, of Co nanoparticle catalysts decorated with Pt for CO2 methanation. The CO2 methanation reaction may play a central role in both CO2 utilization and energy storage strategies for renewable energy. These catalysts require cooperative hydrogen transport between the supporte...

The current work investigates the feasibility of a novel Carbon Capture and Utilization (CCU) approach—also known as Underground Sun Conversion (USC) or geo-methanation. overall objective is comprehensive assessment on technical, economic legal aspects well greenhouse gas impacts to be concerned for establishing USC technology concept. This achieved by applying multidisciplinary research approa...

Samarium oxide (Sm2O3) is a versatile surface for CO2 and H2 interaction conversion. oxide-supported Ni, samarium Co-Ni, Ru-Ni catalysts were tested methanation characterized by X-ray diffraction, nitrogen physisorption, infrared spectroscopy, H2-temperature programmed reduction, photoelectron spectroscopy. Limited dissociation widely available carbonate formate species over 20 wt.% dispersed S...

The transient operation of methanation reactors can become desirable when coupled with fluctuating renewable energies in Power-to-Gas scenarios, which requires suitable kinetic approaches that describe the catalytic phenomena. A combined experimental and theoretical investigation CO2 is conducted using concentration forcing to derive a microkinetic model. Methanation experiments are performed N...

Zirconia was used to support Ru, Ni, and Ru-Ni bimetallic nanoparticles for CO2 methanation. The formation of an alloy detected in Ru K-edge spectra. Ru/ZrO2 exhibited the highest reaction rate (1.35 mol/molmetal.s) with a CH4 selectivity 97.3%. diffuse reflectance infrared fourier transform spectroscopy experiments suggest that formates serve as intermediates converting CO via reverse water–ga...

CO/CO2-Methanation can contribute to the storage of intermittently produced renewable energy. In order be able design this heterogenous catalytic process well with models, a solid diffusion model is necessary. Thus, effects selection are simulated in context under steady-state and unsteady-state conditions. Therefore, dusty gas Wilke-Bosanquet compared binary friction model. The operation condi...

The methanation of CO over a 20 wt % Ni/Al2O3 catalyst was studied with different transient experiments. dissociation found to be reversible and faster than the formation methane. SSITKA ...