Relationship between the Conductivities of CeO2-ZrO2-MOx (M = Bi, Ca, Sn, Ni, Fe) Solid Solutions and Catalytic Activities during Methane Oxidation

2018 ◽  
Vol 91 (2) ◽  
pp. 158-164 ◽  
Author(s):  
Minchan Jeong ◽  
Naoyoshi Nunotani ◽  
Nobuhito Imanaka
Keyword(s):  
Methane Oxidation ◽  
Solid Solutions ◽  
Catalytic Activities

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.

Surface and bulk properties, catalytic activities and selectivities in methane oxidation on near-stoichiometric calcium hydroxyapatites

1996 ◽  
Vol 6 (3) ◽  
pp. 459 ◽  
Author(s):  
Shigeru Sugiyama ◽  
Toshimitsu Minami ◽  
Toshihiro Moriga ◽  
Hiromu Hayashi ◽  
Kichiro Koto ◽  
...  
Keyword(s):  
Methane Oxidation ◽  
Bulk Properties ◽  
Catalytic Activities

scholarly journals Microstructural Changes in La0.5Ca0.5Mn0.5Fe0.5O3 Solid Solutions under the Influence of Catalytic Reaction of Methane Combustion

Catalysts ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 563
Author(s):  
Evgeny Yu. Gerasimov ◽  
Vladimir A. Rogov ◽  
Igor P. Prosvirin ◽  
Lyubov A. Isupova ◽  
Sergey V. Tsybulya
Keyword(s):  
Methane Oxidation ◽  
Solid Solutions ◽  
Perovskite Structure ◽  
Oxidation Reaction ◽  
Perovskite Phase ◽  
Reaction Medium ◽  
Methane Combustion ◽  
Planar Defects ◽  
In Situ Xrd

This article attempts to study changes in the microstructure of solid solutions with the perovskite structure La0.5Ca0.5Mn0.5Fe0.5O3 under the action of the methane oxidation reaction medium. By the methods of XRD, XPS and HRTEM the initial condition of the structure and the surface of the perovskite were both investigated. A feature of the structure of this solid solution is the presence of planar defects in the direction of the planes (101). After the methane oxidation reaction, a similar study of perovskite structure was conducted to obtain the changes. It was shown that under the action of the reaction medium, Ca1−xMnxO particles form on the surface of the perovskite phase, while planar defects in La0.5Ca0.5Mn0.5Fe0.5O3 structure remain. In situ XRD experiments on perovskite calcination in helium current up to 750 °C showed the formation of a similar Ca1−xMnxO phase on the perovskite surface.

Synthesis of homogeneous La1 − x Ca x MnO3 solid solutions by the Pechini method and their activity in methane oxidation

2009 ◽  
Vol 50 (6) ◽  
pp. 886-891 ◽  
Author(s):  
L. A. Isupova ◽  
E. Yu. Gerasimov ◽  
V. I. Zaikovskii ◽  
S. V. Tsybulya ◽  
N. A. Kulikovskaya ◽  
...  
Keyword(s):  
Methane Oxidation ◽  
Solid Solutions ◽  
Pechini Method

Surface electronic structures of lithium nickel oxide solid solutions: selective methane oxidation

2014 ◽  
Vol 41 (10) ◽  
pp. 7405-7412 ◽  
Author(s):  
T. Miyazaki ◽  
R. Sumii ◽  
H. Tanaka ◽  
K. Amemiya ◽  
S. Hino
Keyword(s):  
Nickel Oxide ◽  
Methane Oxidation ◽  
Solid Solutions ◽  
Electronic Structures ◽  
Lithium Nickel Oxide
Sign in / Sign up

Export Citation Format

Share Document