Reaction Mechanism of Coal Chemical Looping Process for Syngas Production with CaSO4 Oxygen Carrier in the CO2 Atmosphere

2012 ◽  
Vol 51 (31) ◽  
pp. 10364-10373 ◽  
Author(s):  
Yongzhuo Liu ◽  
Qingjie Guo ◽  
Yu Cheng ◽  
Ho-Jung Ryu
Keyword(s):  
Reaction Mechanism ◽  
Oxygen Carrier ◽  
Chemical Looping ◽  
Syngas Production ◽  
Caso4 Oxygen Carrier ◽  
Co2 Atmosphere

scholarly journals Catalyzed Ethanol Chemical Looping Gasification Mechanism on the Perfect and Reduced Fe2O3 Surfaces

Energies ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1663
Author(s):  
Laixing Luo ◽  
Xing Zheng ◽  
Jianye Wang ◽  
Wu Qin ◽  
Xianbin Xiao ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Reaction Mechanism ◽  
Density Functional ◽  
Oxygen Carrier ◽  
Catalytic Decomposition ◽  
Density Functional Theory Calculations ◽  
Chemical Looping ◽  
Functional Theory ◽  
Barrier Energy ◽  
Gasification Technology

Biomass chemical looping gasification (CLG) is a novel gasification technology for hydrogen production, where the oxygen carrier (OC) transfers lattice oxygen to catalytically oxidize fuel into syngas. However, the OC is gradually reduced, showing different reaction activities in the CLG process. Fully understanding the CLG reaction mechanism of fuel molecules on perfect and reduced OC surfaces is necessary, for which the CLG of ethanol using Fe2O3 as the OC was introduced as the probe reaction to perform density functional theory calculations to reveal the decomposition mechanism of ethanol into the synthesis gas (including H2, CH4, ethylene, formaldehyde, acetaldehyde, and CO) on perfect and reduced Fe2O3(001) surfaces. When Fe2O3(001) is reduced to FeO0.375(001), the calculated barrier energy decreases and then increases again, suggesting that the reduction state around FeO(001) favors the catalytic decomposition of ethanol to produce hydrogen, which proves that the degree of reduction has an important effect on the CLG reaction.

Syngas production by chemical looping co-gasification of rice husk and coal using an iron-based oxygen carrier

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122100
Author(s):  
Ming Luo ◽  
Haiyan Zhang ◽  
Shuxiang Wang ◽  
Jianjun Cai ◽  
Yanjun Qin ◽  
...  
Keyword(s):  
Rice Husk ◽  
Oxygen Carrier ◽  
Chemical Looping ◽  
Syngas Production ◽  
Iron Based

Syngas production via chemical looping reforming biomass pyrolysis oil using NiO/dolomite as oxygen carrier, catalyst or sorbent

2019 ◽  
Vol 198 ◽  
pp. 111835 ◽  
Author(s):  
Tingting Xu ◽  
Bo Xiao ◽  
Gift Gladson Moyo ◽  
Fanghua Li ◽  
Zhihua Chen ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Chemical Looping ◽  
Pyrolysis Oil ◽  
Biomass Pyrolysis ◽  
Syngas Production

Investigation into compound CaSO4 oxygen carrier for chemical-looping combustion

2011 ◽  
Vol 39 (3) ◽  
pp. 161-168 ◽  
Author(s):  
Ning DING ◽  
Ying ZHENG ◽  
Cong LUO ◽  
Qi-long WU ◽  
Pei-fang FU ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Caso4 Oxygen Carrier

Biomass chemical looping gasification for syngas production using ilmenite as oxygen carrier in a 1.5 kWth unit

2021 ◽  
Vol 405 ◽  
pp. 126679
Author(s):  
Oscar Condori ◽  
Francisco García-Labiano ◽  
Luis F. de Diego ◽  
María T. Izquierdo ◽  
Alberto Abad ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Chemical Looping ◽  
Syngas Production

Chemical-looping combustion of methane with CaSO4 oxygen carrier in a fixed bed reactor

2008 ◽  
Vol 49 (11) ◽  
pp. 3178-3187 ◽  
Author(s):  
Qilei Song ◽  
Rui Xiao ◽  
Zhongyi Deng ◽  
Huiyan Zhang ◽  
Laihong Shen ◽  
...  
Keyword(s):  
Oxygen Carrier ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Caso4 Oxygen Carrier
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