On the ensemble requirement of fully selective chemical looping methane partial oxidation over La-Fe-based perovskites

2021 ◽  
pp. 120788
Author(s):  
Jie Yang ◽  
Erlend Bjørgum ◽  
Hui Chang ◽  
Ka-Ke Zhu ◽  
Zhi-Jun Sui ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Selective Chemical

scholarly journals Boosting methane partial oxidation on ceria through exsolution of robust Ru nanoparticles

2021 ◽  
Author(s):  
Alfonso Juan Carrillo del Teso ◽  
Laura Navarrete ◽  
Marwan Laqdiem ◽  
Maria Balaguer ◽  
Jose Manuel Serra
Keyword(s):  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Partial Oxidation ◽  
Added Value ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Gas Emissions ◽  
Ru Nanoparticles

Finding sustainable routes for the transformation of CO2 into fuels and added-value chemicals is key for mitigating greenhouse gas emissions. In this respect, chemical-looping reforming coupled with CO2 splitting emerges...

Oxygen vacancy promoted methane partial oxidation over iron oxide oxygen carriers in the chemical looping process

2016 ◽  
Vol 18 (47) ◽  
pp. 32418-32428 ◽  
Author(s):  
Zhuo Cheng ◽  
Lang Qin ◽  
Mengqing Guo ◽  
Mingyuan Xu ◽  
Jonathan A. Fan ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Oxygen Vacancy ◽  
Partial Oxidation ◽  
Oxygen Vacancies ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Oxygen Carriers

We found that oxygen vacancies can promote CH4 partial oxidation on iron oxide oxygen carriers during the chemical looping process.

scholarly journals Near 100% CO selectivity in nanoscaled iron-based oxygen carriers for chemical looping methane partial oxidation

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Yan Liu ◽  
Lang Qin ◽  
Zhuo Cheng ◽  
Josh W. Goetze ◽  
Fanhe Kong ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Density Functional ◽  
Bond Cleavage ◽  
Oxygen Carrier ◽  
Value Added ◽  
Silica Matrix ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Oxidation Reactions

AbstractChemical looping methane partial oxidation provides an energy and cost effective route for methane utilization. However, there is considerable CO2 co-production in current chemical looping systems, rendering a decreased productivity in value-added fuels or chemicals. In this work, we demonstrate that the co-production of CO2 can be dramatically suppressed in methane partial oxidation reactions using iron oxide nanoparticles embedded in mesoporous silica matrix. We experimentally obtain near 100% CO selectivity in a cyclic redox system at 750–935 °C, which is a significantly lower temperature range than in conventional oxygen carrier systems. Density functional theory calculations elucidate the origins for such selectivity and show that low-coordinated lattice oxygen atoms on the surface of nanoparticles significantly promote Fe–O bond cleavage and CO formation. We envision that embedded nanostructured oxygen carriers have the potential to serve as a general materials platform for redox reactions with nanomaterials at high temperatures.

Chemical looping beyond combustion: production of synthesis gas via chemical looping partial oxidation of methane

RSC Advances ◽  
2014 ◽  
Vol 4 (88) ◽  
pp. 47254-47267 ◽  
Author(s):  
Saurabh Bhavsar ◽  
Götz Veser
Keyword(s):  
Partial Oxidation ◽  
Synthesis Gas ◽  
Partial Oxidation Of Methane ◽  
Methane Partial Oxidation ◽  
Chemical Looping ◽  
Oxidation Of Methane ◽  
Systematic Development

Systematic development of Fe–Ni bimetallic carrier results in efficient and safe chemical looping process for methane partial oxidation to syngas.

Enhanced Methane Conversion using Ni-doped Calcium Ferrite Oxygen Carriers in Chemical Looping Partial Oxidation Systems with CO2 Utilization

2021 ◽  
Author(s):  
Vedant Shah ◽  
Zhuo Cheng ◽  
Pinak Mohapatra ◽  
Liang-Shih Fan
Keyword(s):  
Partial Oxidation ◽  
Methane Conversion ◽  
Liquid Fuels ◽  
Calcium Ferrite ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Co2 Utilization ◽  
High Quality ◽  
Novel Technology

Chemical looping partial oxidation (CLPO) is a novel technology for converting methane into high quality syngas that can be further converted into liquid fuels. In the present work, Ni-doped Ca2Fe2O5...

scholarly journals Cyclic oxygen exchange capacity of Ce-doped V2O5 materials for syngas production via high-temperature thermochemical-looping reforming of methane

RSC Advances ◽  
2021 ◽  
Vol 11 (37) ◽  
pp. 23095-23104
Author(s):  
Asim Riaz ◽  
Wojciech Lipiński ◽  
Adrian Lowe
Keyword(s):  
High Temperature ◽  
Partial Oxidation ◽  
Exchange Capacity ◽  
Oxygen Exchange ◽  
High Oxygen ◽  
Methane Partial Oxidation ◽  
Syngas Production ◽  
Redox Pair ◽  
Cerium Doping ◽  
Fast Rates

Cerium doping into the V2O5 lattice forms a reversible V2O3/VO redox pair after sequential methane partial oxidation and CO2/H2O splitting reactions and produces syngas (H2, CO) with fast rates and high oxygen exchange capacity.

Hetero-Metallic Active Sites in Omega (MAZ) Zeolite-Catalyzed Methane Partial Oxidation: A DFT Study

2021 ◽  
Vol 60 (6) ◽  
pp. 2400-2409
Author(s):  
Linzhe Wang ◽  
Zhi Li ◽  
Zhixia Wang ◽  
Xinyu Chen ◽  
Weiyu Song ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Active Sites ◽  
Dft Study ◽  
Methane Partial Oxidation
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