SYNTHESIS OF CuO-Cu1.5Mn1.5O4 COMPOSITE OXIDE BY USING A BIMETALLIC ORGANIC FRAMEWORK FOR CATALYTIC PROPANE TOTAL OXIDATION

FENG Chao; XIONG Gaoyan; WANG Yunxia; PAN Yuan; LIU Yunqi

doi:10.13205/j.hjgc.202208009

Volume 40 Issue 8

Nov. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2022 > 40(8): 69-77

FENG Chao, XIONG Gaoyan, WANG Yunxia, PAN Yuan, LIU Yunqi. SYNTHESIS OF CuO-Cu1.5Mn1.5O4 COMPOSITE OXIDE BY USING A BIMETALLIC ORGANIC FRAMEWORK FOR CATALYTIC PROPANE TOTAL OXIDATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(8): 69-77. doi: 10.13205/j.hjgc.202208009

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FENG Chao, XIONG Gaoyan, WANG Yunxia, PAN Yuan, LIU Yunqi. SYNTHESIS OF CuO-Cu_1.5Mn_1.5O₄ COMPOSITE OXIDE BY USING A BIMETALLIC ORGANIC FRAMEWORK FOR CATALYTIC PROPANE TOTAL OXIDATION[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(8): 69-77. doi: 10.13205/j.hjgc.202208009

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SYNTHESIS OF CuO-Cu_1.5Mn_1.5O₄ COMPOSITE OXIDE BY USING A BIMETALLIC ORGANIC FRAMEWORK FOR CATALYTIC PROPANE TOTAL OXIDATION

doi: 10.13205/j.hjgc.202208009

College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China

Received Date: 2021-08-24
Publish Date: 2022-11-08

Abstract

Abstract

In the paper, Cu and Mn bimetallic organic framework materials were prepared using the gas-assisted ion replacement method. A series of CuO-Cu_1.5Mn_1.5O₄ composite oxides were prepared through controlled calcination, and the effect of various n(Mn)/n(Cu) on the catalytic performance of propane total oxidation was studied. The results revealed that with an increase in the n(Mn)/n(Cu), CuO-Cu_1.5Mn_1.5O₄ catalysts showed enhanced propane total oxidation catalytic activities. When n(Mn)/n(Cu) was 31∶69, the complete combustion temperature (T₉₀) of propane was just 309.8 ℃, signifying that the activity was much higher than that of CuO and Mn₂O₃. The experimental and density functional theory (DFT) calculation results revealed that the synergetic effect of Mn and Cu increased the n(Mn⁴⁺)/n(Mn³⁺) and n(Cu⁺)/n(Cu²⁺) on the surface, which enhanced the redox ability at low-temperature. Meanwhile, the increase of n(Cu⁺)/n(Cu²⁺) led to a higher concentration of oxygen vacancies, and made it easier to adsorb and activate oxygen and propane molecules on the surface, thereby boosted the propane catalytic oxidation performance.
- CuO-Cu_1.5Mn_1.5O₄ composite oxides,
- catalytic propane oxidation,
- redox properties,
- MOF material,
- syneretic effect

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References

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