Oxygen transport capacity and kinetic study of ilmenite ores for methane chemical-looping combustion

Energy ◽  
2019 ◽  
Vol 169 ◽  
pp. 329-337 ◽  
Author(s):  
Nima Khakpoor ◽  
Ehsan Mostafavi ◽  
Nader Mahinpey ◽  
Hector De la Hoz Siegler
Keyword(s):  
Kinetic Study ◽  
Oxygen Transport ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Transport Capacity ◽  
Oxygen Transport Capacity

Pressurized chemical looping combustion with CO: Reduction reactivity and oxygen-transport capacity of ilmenite ore

2016 ◽  
Vol 184 ◽  
pp. 132-139 ◽  
Author(s):  
Xuao Lu ◽  
Ryad A. Rahman ◽  
Dennis Y. Lu ◽  
Firas N. Ridha ◽  
Marc A. Duchesne ◽  
...  
Keyword(s):  
Oxygen Transport ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Transport Capacity ◽  
Oxygen Transport Capacity ◽  
Co Reduction

scholarly journals Characteristics of a CaSO4 composite oxygen carrier supported with an active material for in situ gasification chemical looping combustion of coal

RSC Advances ◽  
2018 ◽  
Vol 8 (41) ◽  
pp. 23372-23381 ◽  
Author(s):  
Yongzhuo Liu ◽  
Minggang Gao ◽  
Xintao Zhang ◽  
Xiude Hu ◽  
Qingjie Guo
Keyword(s):  
Oxygen Transport ◽  
Oxygen Carrier ◽  
Active Material ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Transport Capacity ◽  
Oxygen Transport Capacity ◽  
Physicochemical Stability

The upgraded CaSO4/clay composite oxygen carrier possessed high physicochemical stability and an oxygen transport capacity of 14.1 wt%.

scholarly journals Development of V-Based Oxygen Carriers for Chemical Looping Oxidative Dehydrogenation of Propane

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 119
Author(s):  
Tianwei Wu ◽  
Qingbo Yu ◽  
Kun Wang ◽  
Martin van Sint Annaland
Keyword(s):  
Oxidative Dehydrogenation ◽  
Oxygen Transport ◽  
Propane Conversion ◽  
Chemical Looping ◽  
Impregnation Method ◽  
Oxygen Carriers ◽  
Oxidative Dehydrogenation Of Propane ◽  
Transport Capacity ◽  
Mechanical Mixing ◽  
Oxygen Transport Capacity

Two different preparation methods, viz. incipient impregnation and mechanical mixing, have been used to prepare V-based oxygen carriers with different V loadings for chemical looping oxidative dehydrogenation of propane. The effect of the preparation method, V loading, and reaction temperature on the performance of these oxygen carriers have been measured and discussed. It was found that the VOx species can be well distributed on the support when the V loading is low (5 wt.% and 10 wt.%), but they may become aggregated at higher loadings. For oxygen carriers with a higher V loading, the oxygen transport capacity of the oxygen carrier, propane conversion and COx selectivities increase, while the propylene selectivity decreases. With a V-loading of 10 wt.%, the maximum propylene yield was achieved. The VOx species were better distributed over the support when applying the impregnation method; however, at higher V loadings the V-based oxygen carriers prepared by mechanical mixing showed a larger oxygen transport capacity. The oxygen carriers prepared by impregnation showed a better performance for the oxidative dehydrogenation of propane (ODHP) and re-oxidation reactions compared to oxygen carriers prepared by mechanical mixing. Higher reaction temperatures are favorable for the re-oxidation reaction, but unfavorable for the propylene production.

scholarly journals 41. Oxygen transport capacity in the neonatal period

1971 ◽  
Vol 5 (2) ◽  
pp. 91-92
Author(s):  
A Koivikko ◽  
E Länsimies ◽  
J Klossner
Keyword(s):  
Oxygen Transport ◽  
Neonatal Period ◽  
Transport Capacity ◽  
Oxygen Transport Capacity

scholarly journals Stable Mixed Fe-Mn Oxides Supported on ZrO2 Oxygen Carriers for Practical Utilization in CLC Processes

Catalysts ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1047
Author(s):  
Ewelina Ksepko ◽  
Rafal Lysowski
Keyword(s):  
Low Cost ◽  
Industrial Applications ◽  
Reduction Reaction ◽  
Chemical Looping Combustion ◽  
Chemical Looping ◽  
Oxygen Carriers ◽  
Practical Utilization ◽  
Cycle Number ◽  
Oxygen Transport Capacity ◽  
Mn Oxide

The objective of the research was to prepare Fe-based materials for use as oxygen carriers (OCs) and investigate their reactivity in terms of their applicability to energy systems. The performance of ZrO2 supported Fe-Mn oxide oxygen carriers with hydrogen/air in an innovative combustion technology known as chemical looping combustion (CLC) was analyzed. The influence of manganese addition (15–30 wt.%) on reactivity and other physical properties of oxygen carriers was discussed. Thermogravimetric analyses (TGA) were conducted to evaluate their performance. Multi-cycle tests were conducted in TGA with oxygen carriers utilizing gaseous fuel. The effect of redox cycle number and temperature on stability and oxygen transport capacity and redox reaction rate were also evaluated. Physical-chemical analysis such as phase composition was investigated by XRD, while morphology by SEM-EDS and surface area analyses were investigated by the BET method. For screening purposes, the reduction and oxidation were carried out from 800 °C to 1000 °C. Three-cycle TGA tests at the selected temperature range indicated that all novel oxygen carriers exhibited stable chemical looping combustion performance, apart from the reference material, i.e., Fe/Zr oxide. A stable reactivity of bimetallic OCs, together with complete H2 combustion without signs of FeMn/Zr oxide agglomeration, were proved. Oxidation reaction was significantly faster than the reduction reaction for all oxygen carriers. Furthermore, the obtained data indicated that the materials have a low cost of production, with superior reactivity towards hydrogen and air, making them perfect matching carriers for industrial applications for power generation.

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