Supported mixed oxide catalysts for the total oxidation of volatile organic compounds

2011 ◽  
Vol 176 (1) ◽  
pp. 110-115 ◽  
Author(s):  
František Kovanda ◽  
Květa Jirátová
2007 ◽  
Vol 79 (9) ◽  
pp. 1300-1300
Author(s):  
U. Zavyalova ◽  
K. Pollok ◽  
F. Langenhorst ◽  
P. Scholz ◽  
B. Ondruschka

2011 ◽  
Vol 28 (4) ◽  
pp. 1139-1143 ◽  
Author(s):  
Moon Hyeon Kim ◽  
Kyung Ho Cho ◽  
Chae-Ho Shin ◽  
Seong-Eun Kang ◽  
Sung-Won Ham

2021 ◽  
Vol 10 (4) ◽  
pp. 97-102
Author(s):  
Nhung Nguyen Hong ◽  
Hung Khong Manh ◽  
Thang Le Minh ◽  
Phuong Pham Thi Mai ◽  
Nam Chu Thi Hai

Toluene is a component of volatile organic compounds which need to be converted into non-poisonous one. Thus, we study the spinel-typed catalyst as NiCo2O4 for total oxidation of toluene because the advantage of spinel catalyst is multi- defective. Based on the sol-gel method, the catalysts NiCo2O4 were successfully prepared with different ratios of Ni/Co. The characteristic properties of catalysts were evaluated by XRD, BET, H2-TPR and EPR experiments. Amongst these ratios, the catalyst with ratio Ni/Co as 0.5 had the best activity in the total oxidation of toluene, as 100% conversion reached at 250 oC.


Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4534
Author(s):  
Miguel Jose Marin Figueredo ◽  
Clarissa Cocuzza ◽  
Samir Bensaid ◽  
Debora Fino ◽  
Marco Piumetti ◽  
...  

A set of manganese oxide catalysts was synthesized via two preparation techniques: solution combustion synthesis (Mn3O4/Mn2O3-SCS and Mn2O3-SCS) and sol-gel synthesis (Mn2O3-SG550 and Mn2O3-SG650). The physicochemical properties of the catalysts were studied by means of N2-physisorption at −196 °C, X-ray powder diffraction, H2 temperature-programmed reduction (H2-TPR), soot-TPR, X-ray photoelectron spectroscopy (XPS) and field-emission scanning electron microscopy (FESEM). The high catalytic performance of the catalysts was verified in the oxidation of Volatile Organic Compounds (VOC) probe molecules (ethene and propene) and carbon soot in a temperature-programmed oxidation setup. The best catalytic performances in soot abatement were observed for the Mn2O3-SG550 and the Mn3O4/Mn2O3-SCS catalysts. The catalytic activity in VOC total oxidation was effectively correlated to the enhanced low-temperature reducibility of the catalysts and the abundant surface Oα-species. Likewise, low-temperature oxidation of soot in tight contact occurred over the Mn2O3-SG550 catalyst and was attributed to high amounts of surface Oα-species and better surface reducibility. For the soot oxidation in loose contact, the improved catalytic performance of the Mn3O4/Mn2O3-SCS catalyst was attributed to the beneficial effects of both the morphological structure that—like a filter—enhanced the capture of soot particles and to a probable high amount of surface acid-sites, which is characteristic of Mn3O4 catalysts.


2003 ◽  
Vol 40 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Salvatore Scirè ◽  
Simona Minicò ◽  
Carmelo Crisafulli ◽  
Cristina Satriano ◽  
Alessandro Pistone

2000 ◽  
Vol 59 (3-4) ◽  
pp. 249-259 ◽  
Author(s):  
Stuart H Taylor ◽  
Catherine S Heneghan ◽  
Graham J Hutchings ◽  
Ian D Hudson

Fuel ◽  
2009 ◽  
Vol 88 (11) ◽  
pp. 2122-2129 ◽  
Author(s):  
María Roxana Morales ◽  
Bibiana P. Barbero ◽  
Tessy Lopez ◽  
Albino Moreno ◽  
Luis E. Cadús

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