Abstract CO 2 methanation can be a key technology for realizing sustainable society. CH 4 is used as an energy carrier and raw material chemical products, thereby contributing to the reduction of emissions. Methanation with plasma catalysis lowers process temperature, which improve throughput stability. In this study, we investigated effect gas flow rate discharge volume on methanation, using l...

The Ni-based catalyst has been intensively studied for CO methanation. Here, MCM-41 is selected as support to prepare xNi/MCM-41 catalysts with various Ni contents and the catalytic performance methanation in a slurry-bed reactor investigated under different reaction conditions. conversion gradually increases temperature or pressure rises. As content increases, specific surface area pore volume...

The detection, by Auger electron spectroscopy (AES), of fractional monolayers of carbon on Ru is difficult because of the interference between the Ru (273 eV) and C (272 eV) transitions [I ,2]. In attempting to deal with this problem, two methods of analysis have been used. In the first, the ratio of the 273 eV signal (p-p height) to the 231 eV Ru signal is monitored [3,4]. Because the 231 eV s...

This study aims to clarify the effect of twist angle in spiral-type catalyst on CO2 auto-methanation (AM) performance. The catalysts with different angles 360°, 540°, 720°, and 1080° were constructed investigated for their methanation properties. By increasing angle, high performance was obtained at lower temperature range. Furthermore, as a result calculation heat transfer coefficient (U) Nuss...

In recent years, carbon dioxide hydrogenation leading to synthetic fuels and value-added molecules has been proposed as a promising technology for stabilizing anthropogenic greenhouse gas emissions. Methanation or Sabatier are possible reactions valorize the CO2. present work, thermal CO2 methanation non-thermal plasma (NTP)-assisted was performed over 15Ni/CeO2 promoted with 1 5 wt% of cobalt....

The kinetics of the reaction of H, and CO over single crystals of nickel ((100) and (111)) and ruthenium ((110) and (001)) have been studied as a function of pressure and Hz/CO ratio. A striking correlation has been observed between the measured surface carbide concentration and the rate of methane production while varying the Ha/CO ratio and the total pressure. This correlation is shown to be ...

Hydrogen is one of the main energy carriers playing a prominent role in future decarbonization economy. However, several aspects regarding transport and storage this gas are challenging. The intermediary conversion hydrogen into high-density molecules may be crucial step until technological conditions ready to attain significant reduction fossil fuel use industrial sector. process transforming ...

Zeolite 13X and 5A supported Ni catalysts were synthesized for CO2 methanation using the evaporation impregnation method. The influence of different precursors (nitrate, citrate, acetate) as well calcination temperatures on catalyst properties performance investigated. XRD, SEM-EDX, TEM, STEM-EDX, N2 physisorption, H2-TPR, TPD-NH3 TG/DTA used detailed characterization catalysts. parent structur...