Active manganese oxide on MnO x –CeO 2 catalysts for low-temperature NO oxidation: Characterization and kinetics study

2018 ◽  
Vol 36 (2) ◽  
pp. 142-147 ◽  
Author(s):  
Lingkun Meng ◽  
Jun Wang ◽  
Zhihui Sun ◽  
Jinxin Zhu ◽  
Hang Li ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
No Oxidation ◽  
Kinetics Study

The Experimental of Low Temperature Color Slip for Decorative on Earthenware Body

2016 ◽  
Vol 690 ◽  
pp. 282-285
Author(s):  
Soravich Mulinta
Keyword(s):  
Low Temperature ◽  
Physical Properties ◽  
Manganese Oxide ◽  
Ferric Oxide ◽  
Potassium Feldspar ◽  
Raw Material ◽  
Blue Color ◽  
X Ray ◽  
Yellow Color

The purpose of the study was to investigate the effects of dolomite body, frit and potassium feldspar on the properties of color slip for decorative method of color slip on earthen ware production. The characterization of raw material was analyzed by X-ray fluorescence (XRF). The experiment started with triaxial blend of dolomite body, frit and potassium feldspar in the defined ratio and then to painting of color slips on earthenware production. After that, firing specimens at 950 °C in oxidation atmosphere. Finally, the specimens were tested microstructure and physical properties. The results showed that the ratio of 50% dolomite body, 40% frit and 10% potassium feldspar were optimum properties for decorative on earthenware body. In color slip consisting of blue color added Cobalt oxide 1% ,Green colors added chromic oxide 10% , Gray color added manganese oxide 10% ,yellow color added stain 2225 10% and hazel color added ferric oxide 2 wt %.

Low-Temperature Green Synthesis of Multivalent Manganese Oxide Nanowires

2013 ◽  
Vol 1 (9) ◽  
pp. 1070-1074 ◽  
Author(s):  
Harish Veeramani ◽  
Deborah Aruguete ◽  
Niven Monsegue ◽  
Mitsuhiro Murayama ◽  
Urs Dippon ◽  
...  
Keyword(s):  
Low Temperature ◽  
Green Synthesis ◽  
Manganese Oxide ◽  
Oxide Nanowires

Low-temperature NO oxidation using lattice oxygen in Fe-site substituted SrFeO3−δ

2020 ◽  
Vol 22 (42) ◽  
pp. 24181-24190
Author(s):  
Kazuki Tamai ◽  
Saburo Hosokawa ◽  
Kazuo Kato ◽  
Hiroyuki Asakura ◽  
Kentaro Teramura ◽  
...  
Keyword(s):  
Fine Structure ◽  
Low Temperature ◽  
Lattice Oxygen ◽  
No Oxidation ◽  
Oxygen Release ◽  
X Ray ◽  
Absorption Fine ◽  
Perovskite Catalysts ◽  
X Ray Absorption

The dynamics of lattice oxygen release from perovskite catalysts during NO oxidation was investigated by dispersive X-ray absorption fine structure.

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.

A theoretical kinetics study on low-temperature reactions of methyl acetate radicals with molecular oxygen

2018 ◽  
Vol 196 ◽  
pp. 45-53 ◽  
Author(s):  
Qinghui Meng ◽  
Xudong Zhao ◽  
Lidong Zhang ◽  
Peng Zhang ◽  
Liusi Sheng
Keyword(s):  
Low Temperature ◽  
Molecular Oxygen ◽  
Methyl Acetate ◽  
Kinetics Study

Low-temperature synthesis of manganese oxide–carbon nanotube-enhanced microwave-absorbing nanocomposites

2018 ◽  
Vol 53 (24) ◽  
pp. 16288-16302 ◽  
Author(s):  
Huifang Pang ◽  
Ahmed M. Abdalla ◽  
Rakesh P. Sahu ◽  
Yuping Duan ◽  
Ishwar K. Puri
Keyword(s):  
Carbon Nanotube ◽  
Low Temperature ◽  
Manganese Oxide ◽  
Low Temperature Synthesis ◽  
Temperature Synthesis ◽  
Microwave Absorbing

Manganese oxide nanostructures: low-temperature selective synthesis and thermal conversion

RSC Advances ◽  
2015 ◽  
Vol 5 (32) ◽  
pp. 25250-25257 ◽  
Author(s):  
Leilei Lan ◽  
Guangrui Gu ◽  
Quanjun Li ◽  
Huafang Zhang ◽  
Ke Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Manganese Oxide ◽  
Thermal Conversion ◽  
High Yield ◽  
Selective Synthesis ◽  
Temperature Reduction ◽  
Oxide Nanostructures ◽  
Low Temperature Reduction

γ-MnOOH nanorods, δ-MnO2 nanosheets, α-Mn2O3 nanocubes, and Mn3O4 nanoparticles were selectively prepared via a facile, high-yield and low-temperature reduction route.

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