Alkaline electrochemical water oxidation with multi-shelled cobalt manganese oxide hollow spheres

2017 ◽  
Vol 53 (62) ◽  
pp. 8641-8644 ◽  
Author(s):  
Arindam Indra ◽  
Prashanth W. Menezes ◽  
Chittaranjan Das ◽  
Dieter Schmeißer ◽  
Matthias Driess
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Hollow Spheres ◽  
Oxide Catalysts ◽  
Oxidation Activity ◽  
Manganese Oxide Catalysts

Promising multi-layered hollow spheres of cobalt manganese oxide catalysts have been synthesized which exhibit excellent water oxidation activity.

Highly active water oxidation on nanostructured biomimetic calcium manganese oxide catalysts

2016 ◽  
Vol 4 (17) ◽  
pp. 6585-6594 ◽  
Author(s):  
Feng Rong ◽  
Jiao Zhao ◽  
Zheng Chen ◽  
Yuxing Xu ◽  
Yaopeng Zhao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Manganese Oxide ◽  
Oxidation State ◽  
Water Oxidation ◽  
Oxide Catalysts ◽  
Structural Distortion ◽  
Manganese Oxide Catalysts ◽  
Highly Active

Nanostructured biomimetic birnessite CaxMnOy oxides with an intermediate Mn oxidation state and proper structural distortion show improved catalytic activity for the WOR.

scholarly journals Using nickel manganese oxide catalysts for efficient water oxidation

2015 ◽  
Vol 51 (24) ◽  
pp. 5005-5008 ◽  
Author(s):  
Prashanth W. Menezes ◽  
Arindam Indra ◽  
Ophir Levy ◽  
Kamalakannan Kailasam ◽  
Vitaly Gutkin ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Oxide System ◽  
Oxide Catalysts ◽  
Structure Activity Relationships ◽  
Manganese Oxide Catalysts ◽  
Structure Activity ◽  
Nickel Manganese

Here we explore the nickel manganese oxide system for efficient water oxidation and their structure–activity relationships.

Robust Mesoporous Manganese Oxide Catalysts for Water Oxidation

ACS Catalysis ◽  
2015 ◽  
Vol 5 (3) ◽  
pp. 1693-1699 ◽  
Author(s):  
Chung-Hao Kuo ◽  
Islam M. Mosa ◽  
Altug S. Poyraz ◽  
Sourav Biswas ◽  
Abdelhamid M. El-Sawy ◽  
...  
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Oxide Catalysts ◽  
Manganese Oxide Catalysts

Calcium manganese oxide catalysts for water oxidation: Unravelling the influence of various synthesis strategies

2016 ◽  
Vol 79 ◽  
pp. 133-137 ◽  
Author(s):  
Hasna Bourajoini ◽  
Anne-Riikka Rautio ◽  
Krisztian Kordas ◽  
Jyri-Pekka Mikkola
Keyword(s):  
Manganese Oxide ◽  
Water Oxidation ◽  
Oxide Catalysts ◽  
Manganese Oxide Catalysts

Manganese oxide catalysts for NOx reduction with NH3 at low temperatures

2007 ◽  
Vol 327 (2) ◽  
pp. 261-269 ◽  
Author(s):  
Min Kang ◽  
Eun Duck Park ◽  
Ji Man Kim ◽  
Jae Eui Yie
Keyword(s):  
Manganese Oxide ◽  
Low Temperatures ◽  
Nox Reduction ◽  
Oxide Catalysts ◽  
Manganese Oxide Catalysts

scholarly journals Catalytic Abatement of Volatile Organic Compounds and Soot over Manganese Oxide Catalysts

Materials ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 4534
Author(s):  
Miguel Jose Marin Figueredo ◽  
Clarissa Cocuzza ◽  
Samir Bensaid ◽  
Debora Fino ◽  
Marco Piumetti ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Low Temperature ◽  
Manganese Oxide ◽  
Organic Compounds ◽  
Catalytic Performance ◽  
Oxide Catalysts ◽  
X Ray ◽  
Manganese Oxide Catalysts ◽  
Volatile Organic ◽  
Temperature Programmed

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.

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