TY - JOUR

T1 - Catalytic process for methane production from atmospheric carbon dioxide utilizing renewable energy

AU - Veselovskaya, Janna V.

AU - Parunin, Pavel D.

AU - Okunev, Aleksey G.

PY - 2017/12/1

Y1 - 2017/12/1

N2 - Kinetics of CO2 methanation reaction over the commercial nickel catalyst NKM-2V was studied in a perfectly mixed reactor at T = 250–350 °C. It has been shown for the stoichiometric mixture of CO2 and H2 that both the catalyst activity and CO2 conversion increase with temperature. The decrease in CO2:H2 ratio at T = 300 °C have led to the rise of CO2 conversion to methane. The composite material K2CO3/Al2O3, which is a promising solid absorbent for direct CO2 capture from ambient air, has been synthesized and studied in the temperature-swing adsorption cycles. It has been shown that the increase in the adsorber temperature from 200 to 325 °C during the thermal regeneration step enhances the utilization extent of the composite sorbent in the cycle with the total CO2 uptake rising from 1.9 to 4.4 wt.%. The process combining thermal regeneration of the composite sorbent in hydrogen atmosphere at T = 325 °C and CO2 methanation reaction over the commercial nickel catalyst NKM-2V at T = 425 °C has been studied using the catalytic reactor connected to the outlet of the adsorber. It has been demonstrated that it is possible to transform CO2 into methane with conversion >99%.

AB - Kinetics of CO2 methanation reaction over the commercial nickel catalyst NKM-2V was studied in a perfectly mixed reactor at T = 250–350 °C. It has been shown for the stoichiometric mixture of CO2 and H2 that both the catalyst activity and CO2 conversion increase with temperature. The decrease in CO2:H2 ratio at T = 300 °C have led to the rise of CO2 conversion to methane. The composite material K2CO3/Al2O3, which is a promising solid absorbent for direct CO2 capture from ambient air, has been synthesized and studied in the temperature-swing adsorption cycles. It has been shown that the increase in the adsorber temperature from 200 to 325 °C during the thermal regeneration step enhances the utilization extent of the composite sorbent in the cycle with the total CO2 uptake rising from 1.9 to 4.4 wt.%. The process combining thermal regeneration of the composite sorbent in hydrogen atmosphere at T = 325 °C and CO2 methanation reaction over the commercial nickel catalyst NKM-2V at T = 425 °C has been studied using the catalytic reactor connected to the outlet of the adsorber. It has been demonstrated that it is possible to transform CO2 into methane with conversion >99%.

KW - Carbon dioxide

KW - Direct air capture

KW - Heterogeneous catalysis

KW - Power-to-gas

KW - Renewable energy

KW - Sabatier reaction

KW - GASES

KW - SORBENTS

KW - DIRECT CO2 CAPTURE

UR - http://www.scopus.com/inward/record.url?scp=85019496716&partnerID=8YFLogxK

U2 - 10.1016/j.cattod.2017.05.044

DO - 10.1016/j.cattod.2017.05.044

M3 - Article

AN - SCOPUS:85019496716

VL - 298

SP - 117

EP - 123

JO - Catalysis Today

JF - Catalysis Today

SN - 0920-5861

ER -