Cerium,manganese and cerium/manganese ceramic monolithic catalysts.Study of VOCs and PM removal
来源期刊：Journal of Rare Earths2016年第7期
论文作者：COLMAN-LERNER Esteban PELUSO Miguel Andrés SAMBETH Jorge THOMAS Horacio
文章页码：675 - 682
摘 要：Ceramic supported cerium, manganese and cerium-manganese catalysts were prepared by direct impregnation of aqueous precursor, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Brunauer-Emmett-Teller method（BET）, temperature programmed reduction（H2-TPR）, X-ray photoelectron spectroscopy（XPS） acidity measurements and electrical conductivity. The catalytic activity was evaluated for volatile organic compounds（VOC）（ethanol, methyl ethyl ketone and toluene） oxidation. Additionally, catalysts were tested in particulate matter（PM） combustion. The characterization results indicated that Ce was in the form of Ce4+ and Ce3+, and Mn existed in the form of Mn4+ and Mn3+ on the surface of the Mn/AC sample and in the form of Mn4+ in the Ce/Mn/AC monolith. VOC oxidation results revealed that the Ce/Mn/AC sample showed an excellent performance compared with ceramic supported CeO2（Ce/AC） and MnOx（Mn/AC） samples. The PM combustion was also higher on Ce/Mn/AC monoliths. The enhanced catalytic activity was mainly attributed to the Ce and Mn interaction which enhanced the acidity, conductivity and the reducibility of the oxides.
COLMAN-LERNER Esteban1,2,3，PELUSO Miguel Andrés1,2，SAMBETH Jorge1,2，THOMAS Horacio1,4
1. Centro de Investigación y Desarrollo en Ciencias Aplicadas “Dr.Jorge J.Ronco” CONICET CCT La Plata, UNLP2. Fac.de Ciencias Exactas,UNLP3. Centro de Investigaciones del Medio Ambiente (CIMA).Facultad de Ciencias Exactas,UNLP4. Planta Piloto Multipropósito PLAPIMU,CICPBA-UNLP
摘 要：Ceramic supported cerium, manganese and cerium-manganese catalysts were prepared by direct impregnation of aqueous precursor, and characterized by scanning electron microscopy（SEM）, X-ray diffraction（XRD）, Brunauer-Emmett-Teller method（BET）, temperature programmed reduction（H2-TPR）, X-ray photoelectron spectroscopy（XPS） acidity measurements and electrical conductivity. The catalytic activity was evaluated for volatile organic compounds（VOC）（ethanol, methyl ethyl ketone and toluene） oxidation. Additionally, catalysts were tested in particulate matter（PM） combustion. The characterization results indicated that Ce was in the form of Ce4+ and Ce3+, and Mn existed in the form of Mn4+ and Mn3+ on the surface of the Mn/AC sample and in the form of Mn4+ in the Ce/Mn/AC monolith. VOC oxidation results revealed that the Ce/Mn/AC sample showed an excellent performance compared with ceramic supported CeO2（Ce/AC） and MnOx（Mn/AC） samples. The PM combustion was also higher on Ce/Mn/AC monoliths. The enhanced catalytic activity was mainly attributed to the Ce and Mn interaction which enhanced the acidity, conductivity and the reducibility of the oxides.
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