scholarly journals Catalytic Activity of Iron Oxides Supported on γ-Al2O3 for Methane Oxidation

2005 ◽  
Vol 48 (4) ◽  
pp. 223-228 ◽  
Author(s):  
Suminori Tanaka ◽  
Kazunori Nakagawa ◽  
Eiji Kanezaki ◽  
Masahiro Katoh ◽  
Kei-ichiro Murai ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Methane Oxidation

The Synthesis of Iron Oxides with Different Phases or Exposure Crystal Planes and their Catalytic Property for Propene Oxidation

2012 ◽  
Vol 463-464 ◽  
pp. 189-193
Author(s):  
Kong Zhai Li ◽  
Masaaki Haneda ◽  
Masakuni Ozawa
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Catalytic Property ◽  
Significant Influence ◽  
Catalytic Performance ◽  
Selective Growth ◽  
Crystal Plane ◽  
Low Density ◽  
Fe2o3 Nanoparticles ◽  
Propene Oxidation

Maghemite (γ-FeSubscript text2OSubscript text3) and hematite (α-Fe2O3) nanoparticles with various dominant exposure crystal planes were prepared by several different methods. The structure and the reducibility of these materials were investigated by XRD, Raman and H2-TPR technologies, and their catalytic performance for propene oxidation was also discussed. The maghemite (γ-FeSubscript text2OSubscript text3) showed a better reducibility than hematite (α-FeSubscript text2OSubscript text3), but its activity for propene oxidation is relatively lower. The exposure crystal plane of hematite has a significant influence on its catalytic activity for propene oxidation. Among the prepared four samples, the hematite-1 sample showed the best activity. The selective growth of any planes with a relative low density of Fe atoms for the α-FeSubscript text2OSubscript text3 catalyst would lead to an obvious decrease in the catalytic activity.

Application of S2O82-/FexOy Solid Super Acid as a Heterogeneous Fenton-Like Catalyst for the Degradation of Orange IV in Water

2010 ◽  
Vol 150-151 ◽  
pp. 1710-1713
Author(s):  
Ying Jie Zhang ◽  
Yue Xiao Tian ◽  
Da Peng Li ◽  
Guo Rui Liu ◽  
Li Zhang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Catalytic Decomposition ◽  
Optimal Conditions ◽  
Heterogeneous Fenton ◽  
Effective Catalyst ◽  
Preparation Conditions ◽  
Super Acid ◽  
Decomposition Of H2o2

A new Fenton-like catalyst was prepared to degrade Orange IV in water by catalytic decomposition of H2O2. The optimal preparation conditions were discussed. The catalytic activity of catalyst was evaluated by the degradation of Orange IV and the decomposition of H2O2. The results show that solid super acid (S2O82-/FexOy) soaked in (NH4)2S2O8 is the most effective catalyst among the synthesized iron oxides soaked in other oxidants. The optimal conditions for solid super acid preparation are calcined at 500 for 2 h in the air.

Improvement of Catalytic Activity of LaFe0.95Pd0.05O3 for Methane Oxidation under Transient Conditions

2010 ◽  
Vol 115 (4) ◽  
pp. 1231-1239 ◽  
Author(s):  
Arnim Eyssler ◽  
Evgueny Kleymenov ◽  
André Kupferschmid ◽  
Maarten Nachtegaal ◽  
M. Santhosh Kumar ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methane Oxidation ◽  
Transient Conditions

CATALYTIC ACTIVITY FOR METHANE OXIDATION OF GOETHITE SUPPORTED ON ALUMINA

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4249-4254 ◽  
Author(s):  
KEI-ICHIRO MURAI ◽  
KOHEI TOMITA ◽  
SUGURU TOJO ◽  
TOSHIHIRO MORIGA ◽  
ICHIRO NAKABAYASHI
Keyword(s):  
Catalytic Activity ◽  
Specific Surface ◽  
Methane Oxidation ◽  
Model Experiment ◽  
The Other ◽  
Catalytic Activities ◽  
Surface Areas ◽  
Oxidation Of Methane ◽  
Other Hand ◽  
Specific Surface Areas

Two kinds of α- Fe 2 O 3 catalysts supported on χ- Al 2 O 3 and γ- Al 2 O 3 were synthesized. α- Fe 2 O 3 was prepared from α- FeOOH . As a model experiment, an investigation was made with the oxidation of methane. As all catalysts with various Fe contents supported on χ- Al 2 O 3 with various Fe contents had higher specific surface areas than those supported on γ- Al 2 O 3, α- Fe 2 O 3/χ- Al 2 O 3 catalyst has higher catalytic activities than α- Fe 2 O 3/γ- Al 2 O 3 catalyst. From SEM-EDS analyses, it is concluded that in α- Fe 2 O 3/χ- Al 2 O 3 catalyst, α- Fe 2 O 3 exists mainly on the surface of the support, because of flatness of the surface of χ- Al 2 O 3. On the other hand, in the case of α- Fe 2 O 3/γ- Al 2 O 3 catalyst, as the surface of support, γ- Al 2 O 3, is uneven, α- Fe 2 O 3 do not partially exist on the surface but in the pores.

Catalytic Degradation of Acrylonitrile−Butadiene−Styrene into Fuel Oil 2. Changes in the Structure and Catalytic Activity of Iron Oxides

2001 ◽  
Vol 15 (3) ◽  
pp. 565-570 ◽  
Author(s):  
Mihai Brebu ◽  
M. Azhar Uddin ◽  
Akinori Muto ◽  
Yusaku Sakata ◽  
Cornelia Vasile
Keyword(s):  
Catalytic Activity ◽  
Iron Oxides ◽  
Acrylonitrile Butadiene Styrene ◽  
Catalytic Degradation ◽  
Fuel Oil ◽  
Butadiene Styrene

Catalytic activity of oxide-supported Pd catalysts on a honeycomb for low-temperature methane oxidation

2003 ◽  
Vol 239 (1-2) ◽  
pp. 169-179 ◽  
Author(s):  
Ryuji Kikuchi ◽  
Shingo Maeda ◽  
Kazunari Sasaki ◽  
Stefan Wennerström ◽  
Yasushi Ozawa ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Methane Oxidation ◽  
Pd Catalysts ◽  
Supported Pd Catalysts ◽  
Supported Pd

Self-oscillations during methane oxidation over Pd/Al 2 O 3 : Variations of Pd oxidation state and their effect on Pd catalytic activity

2016 ◽  
Vol 522 ◽  
pp. 40-44 ◽  
Author(s):  
V.Yu. Bychkov ◽  
Yu.P. Tulenin ◽  
M.M. Slinko ◽  
A.K. Khudorozhkov ◽  
V.I. Bukhtiyarov ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methane Oxidation ◽  
Oxidation State
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