Catalytic combustion of diesel soot over Fe and Ag-doped manganese oxides: role of heteroatoms in the catalytic performances

2018 ◽  
Vol 8 (7) ◽  
pp. 1905-1914 ◽  
Author(s):  
Yasutaka Kuwahara ◽  
Akihiro Fujibayashi ◽  
Hiroki Uehara ◽  
Kohsuke Mori ◽  
Hiromi Yamashita
Keyword(s):  
Catalytic Combustion ◽  
Manganese Oxides ◽  
Diesel Soot ◽  
Lattice Oxygen ◽  
Oxygen Species ◽  
Soot Combustion ◽  
Catalytic Activities ◽  
Activated Surface ◽  
Catalytic Performances

Fe/Ag-doped manganese oxides show promising catalytic activities in diesel soot combustion, which occurviamechanisms involving activated surface/lattice oxygen species.

scholarly journals Diesel Soot Combustion over Mn 2 O 3 Catalysts with Different Morphologies: Elucidating the Role of Active Oxygen Species in Soot Combustion

2020 ◽  
Vol 15 (13) ◽  
pp. 2005-2014 ◽  
Author(s):  
Yasutaka Kuwahara ◽  
Genki Kato ◽  
Akihiro Fujibayashi ◽  
Kohsuke Mori ◽  
Hiromi Yamashita
Keyword(s):  
Active Oxygen Species ◽  
Diesel Soot ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Soot Combustion

Heterostructured Copper–Ceria and Iron–Ceria Nanorods: Role of Morphology, Redox, and Acid Properties in Catalytic Diesel Soot Combustion

Langmuir ◽  
2018 ◽  
Vol 34 (8) ◽  
pp. 2663-2673 ◽  
Author(s):  
Putla Sudarsanam ◽  
Brendan Hillary ◽  
Mohamad Hassan Amin ◽  
Nils Rockstroh ◽  
Ursula Bentrup ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Soot Combustion ◽  
Acid Properties ◽  
Redox And Acid Properties

Role of surface oxygen species of mesoporous CeCu oxide catalyst in OVOCs catalytic combustion

2017 ◽  
Vol 5 (2) ◽  
pp. 2068-2076 ◽  
Author(s):  
Xiao Tan ◽  
Hai Lan ◽  
Hongmei Xie ◽  
Guilin Zhou ◽  
Yi Jiang
Keyword(s):  
Catalytic Combustion ◽  
Oxide Catalyst ◽  
Oxygen Species ◽  
Surface Oxygen

On the role of lattice/surface oxygen in ceria–zirconia catalysts for diesel soot combustion

2012 ◽  
Vol 181 (1) ◽  
pp. 108-115 ◽  
Author(s):  
Eleonora Aneggi ◽  
Carla de Leitenburg ◽  
Alessandro Trovarelli
Keyword(s):  
Diesel Soot ◽  
Surface Oxygen ◽  
Soot Combustion ◽  
Lattice Surface

scholarly journals Catalytic Combustion of Diesel Soot on Ce/Zr Series Catalysts Prepared by Sol-Gel Method

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 646 ◽  
Author(s):  
Chaoqian Ai ◽  
Yaoyao Zhang ◽  
Pan Wang ◽  
Wei Wang
Keyword(s):  
Solid Solution ◽  
Catalytic Activity ◽  
Ignition Temperature ◽  
Catalytic Combustion ◽  
Sol Gel ◽  
Diesel Soot ◽  
Lattice Oxygen ◽  
Gel Method ◽  
X Ray ◽  
Test Platform

Cerium-zirconium (Ce-Zr) solid solutions have been extensively used in a wide variety of catalytic processes due to their unique catalytic features in conjunction with lower cost compared to noble metal-based systems. A series of Ce-Zr-based catalysts was prepared by the sol-gel method. The structure and morphology of these catalysts were characterized by X-ray diffraction, thermogravimetric-differential scanning calorimetry, scanning electron microscopy, energy dispersive spectroscopy, and X-ray photoelectron spectroscopy. Furthermore, investigation on catalytic performance was carried out by constructing a test platform, and the result indicated that the catalysts apparently decreased the soot ignition temperature. These catalysts exhibited higher catalytic activity for soot oxidation under narrow contact conditions. The results revealed that some soot particles could react with adsorbed oxygen, and other part of diesel soot reacted with lattice oxygen. The activity of these catalysts was attributed to synergistic effect arising from the combination of K/Co/Zr and Ce-Zr solid solution, which led to the decrease in the ignition temperature to 294 °C (data from the test platform). The catalyst still keeps good stability and catalytic activity after the cycle oxidation experiment. A reaction pathway was proposed to explain catalytic combustion process of soot, i.e., combination of K/Co/Zr with Ce-Zr solid solution reduced the binding energy of Ce-Zr solid solution, which was conducive to provide more active sites to release the active oxygen (O2−) or lattice oxygen (O2−).

scholarly journals Facile synthesis of spinel Cu1.5Mn1.5O4 microspheres with high activity for the catalytic combustion of diesel soot

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20451-20459 ◽  
Author(s):  
H. Zhao ◽  
X. X. Zhou ◽  
L. Y. Pan ◽  
M. Wang ◽  
H. R. Chen ◽  
...  
Keyword(s):  
High Activity ◽  
Catalytic Combustion ◽  
Diesel Soot ◽  
Soot Combustion ◽  
Facile Synthesis ◽  
Excellent Activity

Optimized Cu1.5Mn1.5O4 microspheres, possessing abundant Oads and active Cu+–Mn4+ sites for NO2 formation, exhibit excellent activity for soot combustion.

Preparation of ultrafine Ce-based oxide nanoparticles and their catalytic performances for diesel soot combustion

2014 ◽  
Vol 32 (2) ◽  
pp. 124-130 ◽  
Author(s):  
Yuechang WEI ◽  
Zhen ZHAO ◽  
Jinqing JIAO ◽  
Jian LIU ◽  
Aijun DUAN ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Oxide Nanoparticles ◽  
Soot Combustion ◽  
Catalytic Performances

Effects of Synthesis Routes on the States and Catalytic Performance of Manganese Oxides Used for Diesel Soot Combustion

2014 ◽  
Vol 144 (7) ◽  
pp. 1210-1218 ◽  
Author(s):  
Fangfang Dai ◽  
Yifu Yu ◽  
Ming Meng ◽  
Jing Zhang ◽  
Lirong Zheng ◽  
...  
Keyword(s):  
Manganese Oxides ◽  
Catalytic Performance ◽  
Diesel Soot ◽  
Soot Combustion ◽  
Synthesis Routes
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