Aussie-Sino Studies

2017, (4) P134-P138

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Research for the Effect of Different Mass Fraction of γ-Al2O3 on the Thermal Stability of Mesoporous Rare-earth Oxides

Guo Junwu 1 & Zhang Dan 2

摘要(Abstract):

A mesoporous La/Ce/Zr composite oxide catalyst is prepared,in whichγ-Al2O3 works as the main modification component to replace different mass percent of Ce/Zr solid solution matrix. The structures and performances of the composite oxide catalyst powder are characterized by ICP analyzer, scanning electron micro-scope(SEM),specific surface analyzer, laser particle size analyzer, thermal gravimetric analyzer(TGA) and other characterization techniques. The results show thatγ-Al2O3 adjunction significantly improves the sintering degree of the surface of the catalyst powder under high service temperature, increases the thermal stability and anti-aging performance of the catalyst, and simultaneously helps to improve NOx reduction rate and CO2 generation rate of the catalyst. The results of this study have an important value in an engineering application for the simultaneous removal of marine diesel engine exhaust pollutants of PM and NOx.

关键词(KeyWords): γ-Al2O3, Mesoporous material, rare-earth metal, thermal stability

Abstract:

Keywords:

基金项目(Foundation): National Natural Science Foundation of China Item number: 11272213.

作者(Author): Guo Junwu 1 & Zhang Dan 2

Email: guojun.wu@163.com

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