Influence of the preparation conditions on the properties of perovskite-type oxide catalysts

1997 ◽  
Vol 101-103 ◽  
pp. 1195-1200 ◽  
Author(s):  
M HACKENBERGER
Keyword(s):  
Oxide Catalysts ◽  
Preparation Conditions ◽  
Perovskite Type Oxide ◽  
Perovskite Type

Novel Perovskite-Type Oxide Catalysts for Dehydrogenation of Ethylbenzene to Styrene

2009 ◽  
Vol 131 (1-2) ◽  
pp. 54-58 ◽  
Author(s):  
Ryo Watanabe ◽  
Yasushi Sekine ◽  
Masahiko Matsukata ◽  
Eiichi Kikuchi
Keyword(s):  
Oxide Catalysts ◽  
Perovskite Type Oxide ◽  
Dehydrogenation Of Ethylbenzene ◽  
Perovskite Type

The Structures and Preparation Methods of Perovskite-Type Oxide Catalysts for Natural Gas Catalytic Combustion

2013 ◽  
Vol 448-453 ◽  
pp. 2917-2921
Author(s):  
Jia Nan Hu ◽  
Ya Qin Bai ◽  
Rui Fu ◽  
Chun Li ◽  
Wen Yan Zhao ◽  
...  
Keyword(s):  
Catalytic Combustion ◽  
Low Cost ◽  
Methane Combustion ◽  
Oxide Catalysts ◽  
Preparation Methods ◽  
Perovskite Catalyst ◽  
Perovskite Type Oxide ◽  
Combustion Technology ◽  
Lower Temperature ◽  
Perovskite Type

Catalytic combustion technology can effectively reduce the temperature of the combustion reaction and significantly inhibit the formation of NOx. Perovskites catalyst materials have high stability, varied chemical composition, and low cost etc. A combination of catalytic combustion technology and perovskite catalyst materials has great significance for energy industry and environment protection. However, improving lower temperature catalytic activity and high temperature thermostability performance of perovskite catalyst is still major problem. Some researchers have improved the activity and stability of perovskite catalysts for methane combustion by different preparation methods. The structure and preparation methods of perovskite-type oxide catalysts are presented.

Complete Oxidation of Benzene Over Perovskite-Type Oxide Catalysts

2010 ◽  
Vol 53 (7-10) ◽  
pp. 629-634 ◽  
Author(s):  
Hisahiro Einaga ◽  
Shinya Hyodo ◽  
Yasutake Teraoka
Keyword(s):  
Oxide Catalysts ◽  
Complete Oxidation ◽  
Perovskite Type Oxide ◽  
Perovskite Type ◽  
Oxidation Of Benzene

Characterization of perovskite-type oxide catalysts RECoO3 by TPR

1986 ◽  
Vol 31 (1) ◽  
pp. 47-54 ◽  
Author(s):  
Ma Futai ◽  
Chen Yonghua ◽  
Louhui
Keyword(s):  
Oxide Catalysts ◽  
Perovskite Type Oxide ◽  
Perovskite Type

Fuel Gas Production by Gasification of Glycerol Waste over Perovskite-Type Oxide Catalysts

2010 ◽  
Vol 8 (1) ◽  
Author(s):  
Duangduen Atong ◽  
Siritha Ausadasuk ◽  
Viboon Sricharoenchaikul
Keyword(s):  
Metal Ion ◽  
Fixed Bed ◽  
Oxide Catalysts ◽  
Biodiesel Production ◽  
Fixed Bed Reactor ◽  
Perovskite Oxide ◽  
Gaseous Species ◽  
Fuel Gas ◽  
Perovskite Type Oxide ◽  
Perovskite Type

Gasification of glycerol waste which is a by-product from biodiesel production was carried out using LaNiO3 and LaCoO3 perovskite-type oxide catalysts in order to enhance the production of fuel gas while reducing tar from the process. This present work showed that perovskite-type oxide could be effectively applied for cracking of tar from gasification of glycerol waste. The perovskite catalysts were prepared by a sol-gel process using PVA. The optimum condition for synthesis of LaCoO3 and LaNiO3 perovskite oxide was identified when the precursor was mixed metal ion and PVA containing a mole ratio of metal ion to PVA monomer unit as 1:1 and dried at 120°C for 20 h. The synthesized materials were calcined at different temperature and the phases were characterized with x-ray diffraction (XRD). The results showed that the single crystalline phase of perovskite without intermediate phases was achieved from calcination at 800°C for LaNiO3 and only 700°C for LaCoO3. The specific surface areas of LaNiO3 and LaCoO3 catalysts were in the range of 2.46-5.55 m2/g and 3.13-7.68 m2/g, respectively. SEM micrographs of catalyst illustrated a fluffy and foam structure with porous network. Catalytic activity of the prepared samples was tested by conversion of glycerol waste in a fixed-bed reactor. The catalytic reaction was carried out at a temperature of 500-800°C. At high temperatures LaNiO3 appeared to be a superior catalyst which enhanced the production of favorable gaseous species. However further gas upgrading may be required because of low LHV and H2/CO ratios obtained at these conditions.

Sign in / Sign up

Export Citation Format

Share Document