Steam reforming of methane mixtures with ethylene over an industrial nickel catalyst

Tar removal from biomass pyrolysis gas in two-step function of decomposition and adsorption

“…It is remarkable that steam has a strong influence on their yield. Their reactions with steam promoted the production of hydrogen and carbon monoxide [22][23][24]. In case of the air reforming conditions, the results of gas distributions at the ER of 0.2 showed the highest formation of fuel-gas products.…”

Catalytic Effect of Ni and Fe Addition to Gasifier Bed Material in the Steam Reforming of Producer Gas

“…Another possible explanation for low CH 4 conversion is that the presence of C 2 H 4 may have a negative effect on the CH 4 conversion for Ni-based catalysts under reforming conditions. 29 The performance of the three Ni-and Fe-based catalysts, (1.00Ni+0.00Fe), (0.75Ni+0.25Fe), and (0.50Ni+0.50Fe) catalysts, is studied at reforming temperatures of 700, 800, 30 With an increase in the reaction temperature, the C 7 H 8 and C 2 H 4 conversions increase for all three catalysts, and the highest conversions are noted for the (1.00Ni+0.00Fe) catalyst at 900 °C. However, no consistent trend is observed for the temperature dependence of the CH 4 conversion for all three catalysts.…”

“…Another possible explanation for low CH 4 conversion is that the presence of C 2 H 4 may have a negative effect on the CH 4 conversion for Ni-based catalysts under reforming conditions. 29 The performance of the three Ni-and Fe-based catalysts, (1.00Ni+0.00Fe), (0.75Ni+0.25Fe), and (0.50Ni+0.50Fe) catalysts, is studied at reforming temperatures of 700, 800, and 900°C. The results are presented in Table 2 in context with the C 7 H 8 , C 2 H 4 , and CH 4 conversions, CO 2 selectivity, and H 2 -to-CO ratio.…”

“…Furthermore, only a few studies ,− have reported collective tar removal efficiency of Ni-based catalysts in the context of a raw producer gas mixture containing hydrocarbons such as toluene (C 7 H 8 ), ethylene (C 2 H 4 ), and methane (CH 4 ), for a potential downstream usage of the cleaned producer gas. For example, the utilization of producer gas in fuel cells is an emerging technology in which it is desirable to reform CH 4 present in the raw producer gas before the cooling stage.…”

Dealing with fuel contaminants in biogas-fed solid oxide fuel cell (SOFC) and molten carbonate fuel cell (MCFC) plants: Degradation of catalytic and electro-catalytic active surfaces and related gas purification methods

“…Sidjabat and Trimm [87] mgC/gcath "spent" Ni catalysts surface for steam reforming. Furthermore, Didenko et al [109] showed how Ni catalysts in presence of 2.7 mol % of ethene in methane steam reforming at 750°C highlighted that the high value of the ratio of the catalytic surface area to the free reaction volume (S/V) reduces the negative effect of ethylene in terms of carbon formation. It was supposed that the positive influence of this factor is due to an increase in the contribution of the heterogeneous component of steam reforming and the corresponding increase in the rate of interaction of coke with water vapor.…”