scholarly journals Catalytic Combustion Performance of Ethyl Acetate with Copper-Cobalt Composite Oxide Catalysts

2015 ◽  
Vol 05 (02) ◽  
pp. 27-33
Author(s):  
丰 邢
Keyword(s):  
Ethyl Acetate ◽  
Catalytic Combustion ◽  
Oxide Catalysts ◽  
Composite Oxide ◽  
Combustion Performance

High Efficiency CeCu Composite Oxide Catalysts Improved via Preparation Methods for Propyl Acetate Catalytic Combustion in Air

2016 ◽  
Vol 14 (3) ◽  
pp. 757-768 ◽  
Author(s):  
Hai Lan ◽  
Guilin Zhou ◽  
Cuijuan Luo ◽  
Yinrong Yu ◽  
Hongmei Xie ◽  
...  
Keyword(s):  
Solid Solution ◽  
Catalytic Combustion ◽  
Oxygen Vacancies ◽  
Oxide Catalysts ◽  
Oxygen Species ◽  
Propyl Acetate ◽  
Composite Oxide ◽  
Oxygen Desorption ◽  
Adsorbed Oxygen Species ◽  
Oxide Solid Solution

Abstract A famous hard-template method (HT), coprecipitation method (PC), and complex method (CA) were used to prepare CeCu composite oxide catalysts. The prepared catalysts were characterized via XRD, BET, Raman, XPS, FI–IR, and O2–TPD, and their catalytic activity and stability were evaluated for the propyl acetate catalytic combustion. The results showed that the CeCu oxide solid solution and oxygen vacancies were formed in the prepared CeCu oxide catalysts, even for CeCu–PC and CeCu–CA having a specific amount of isolated crystalline or amorphous CuO species. Comparing with the CeCu–PC and CeCu–CA of low porosity, CeCu–HT developed a mesoporous structure with a much larger specific surface area through a negative replica on the structure of KIT-6, and in it, CuO was completely dissolved in the CeO2 lattice to form more CeCu oxide solid solution and a large amount of oxygen vacancies. As a result, the CeCu–HT catalyst has more surface-adsorbed oxygen species, more –OH group which can also change into surface-adsorbed oxygen species at relatively high temperatures, higher oxygen desorption ability, and higher oxygen mobility than CeCu–PC and CeCu–CA. The CeCu–HT catalyst shows high and stable propyl acetate catalytic combustion performance at 190 °C. The propyl acetate catalytic combustion activity on the prepared CeCu oxide catalysts can be ranked as: CeCu–HT > CeCu–PC > CeCu–CA, which follows the orders of CeCu oxide solid solution content, surface-active oxygen content, and oxygen desorption and mobility of the CeCu composite oxide catalysts.

Promoting Effects of Ni for Toluene Catalytic Combustion Over CoNi/TiO2 Oxide Catalysts

2018 ◽  
Vol 16 (6) ◽  
Author(s):  
Hongmei Xie ◽  
Deping Xia ◽  
Guilin Zhou
Keyword(s):  
Catalytic Combustion ◽  
Chemical Properties ◽  
Oxide Catalysts ◽  
Molar Ratio ◽  
Impregnation Method ◽  
Oxygen Species ◽  
Composite Oxide ◽  
Surface Hydroxyl ◽  
Composite Catalysts ◽  
Ni Species

AbstractThe supported CoNi/TiO2composite oxide catalysts were prepared by impregnation method. The physical and chemical properties of the prepared catalysts were studied by XRD, XPS and H2-TPR. The results show that the Co3O4, NiO and NiCo2O4species are formed in the CoNi/TiO2composite oxide catalysts. The interaction between the Co and Ni species can effectively enhance the properties of the CoNi/TiO2oxide catalysts. The introduction of Ni species can effectively enhance the surface hydroxyl oxygen species and adsorbed oxygen species content, and the Co3+species content can be enhanced on the surface of the prepared CoNi/TiO2composite oxide catalysts. The low temperature reducibility and toluene catalytic combustion activity of the CoNi/TiO2composite oxide catalysts can be improved by the Ni species. The toluene catalytic combustion activity of CoNi/TiO2composite catalysts can be obviously affected by the Co/Ni molar ratio. The CoNi/TiO2composite oxide catalyst, which has a Co/Ni molar ratio of 1.0, has the best toluene catalytic combustion activity and wide scope of the concentration of toluene. The toluene catalytic combustion conversion can exceed 99 % at 340 °C. That is to say, the toluene concentration in air can be decreased to 80 ppm from 8000 ppm.

Catalytic combustion of ethyl acetate on supported copper oxide catalysts

2007 ◽  
Vol 139 (1) ◽  
pp. 140-145 ◽  
Author(s):  
Yuxia Yang ◽  
Xianlun Xu ◽  
Kunpeng Sun
Keyword(s):  
Copper Oxide ◽  
Ethyl Acetate ◽  
Catalytic Combustion ◽  
Oxide Catalysts

Pore topology control of supported on mesoporous silicas copper and cerium oxide catalysts for ethyl acetate oxidation

2013 ◽  
Vol 180 ◽  
pp. 156-161 ◽  
Author(s):  
Tanya Tsoncheva ◽  
Gloria Issa ◽  
José M. López Nieto ◽  
Teresa Blasco ◽  
Patricia Concepcion ◽  
...  
Keyword(s):  
Ethyl Acetate ◽  
Cerium Oxide ◽  
Topology Control ◽  
Oxide Catalysts ◽  
Mesoporous Silicas ◽  
Acetate Oxidation

Catalytic combustion of volatile organic compounds on gold/cerium oxide catalysts

2003 ◽  
Vol 40 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Salvatore Scirè ◽  
Simona Minicò ◽  
Carmelo Crisafulli ◽  
Cristina Satriano ◽  
Alessandro Pistone
Keyword(s):  
Volatile Organic Compounds ◽  
Cerium Oxide ◽  
Organic Compounds ◽  
Catalytic Combustion ◽  
Oxide Catalysts ◽  
Volatile Organic
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