The effects of MoO3 impregnation order on the catalytic activity for propane combustion over Pt/ZrO2 catalysts: The crucial roles of Pt-MoO3 interfacial sites density

2021 ◽  
Author(s):  
Jian Chen ◽  
Mengfei Luo ◽  
Jiqing Lu ◽  
Chufeng Liu ◽  
Weiyue Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Propane Combustion

MoO3 promoted Pt/ZrO2 catalysts were prepared by co-impregnation (Pt-Mo/ZrO2) or stepwise impregnation (Pt/Mo/ZrO2 and Mo/Pt/ZrO2) for propane combustion. Impregnation order affects the density of active Pt-MoO3 interfacial sites, which is...

Insights into propane combustion over MoO3 promoted Pt/ZrO2 catalysts: The generation of Pt-MoO3 interface and its promotional role on catalytic activity

2020 ◽  
Vol 391 ◽  
pp. 80-90
Author(s):  
Pei-Pei Zhao ◽  
Jian Chen ◽  
Hong-Bo Yu ◽  
Bing-Heng Cen ◽  
Wei-Yue Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Propane Combustion

scholarly journals Lanthanum based high surface area perovskite-type oxide and application in CO and propane combustion

2018 ◽  
Vol 34 (1) ◽  
pp. 31
Author(s):  
Paulo Roberto Nagipe Da Silva ◽  
Ana Brígida Soares
Keyword(s):  
Catalytic Activity ◽  
Photoelectron Spectroscopy ◽  
Perovskite Phase ◽  
High Surface ◽  
High Surface Area ◽  
Propane Combustion ◽  
Total Oxidation ◽  
X Ray ◽  
Co Precipitation ◽  
Perovskite Type

The perovskite-type oxides using transition metals present a promising potential as catalysts in total oxidation reaction. The present work investigates the effect of synthesis by oxidant co-precipitation on the catalytic activity of perovskite-type oxides LaBO3 (B= Co, Ni, Mn) in total oxidation of propane and CO. The perovskite-type oxides were characterized by means of X-ray diffraction, nitrogen adsorption (BET method), thermo gravimetric and differential thermal analysis (ATG-DTA) and X-ray photoelectron spectroscopy (XPS). Through a method involving the oxidant co-precipitation it’s possible to obtain catalysts with different BET surface areas, of 33-44 m2/g, according the salts of metal used. The characterization results proved that catalysts have a perovskite phase as well as lanthanum oxide, except LaMnO3, that presents a cationic vacancies and generation for known oxygen excess. The results of catalytic test showed that all oxides have a specific catalytic activity for total oxidation of CO and propane even though the temperatures for total conversion change for each transition metal and substance to be oxidized.

Preparation of alumina-supported LaFeO3 catalysts and their catalytic activity for propane combustion

2008 ◽  
Vol 139 (1-2) ◽  
pp. 37-42 ◽  
Author(s):  
Teruaki Asada ◽  
Teppei Kayama ◽  
Hajime Kusaba ◽  
Hisahiro Einaga ◽  
Yasutake Teraoka
Keyword(s):  
Catalytic Activity ◽  
Propane Combustion

Robust and well-controlled TiO2–Al2O3 binary nanoarray-integrated ceramic honeycomb for efficient propane combustion

CrystEngComm ◽  
2019 ◽  
Vol 21 (17) ◽  
pp. 2727-2735 ◽  
Author(s):  
Juxia Xiong ◽  
Zhu Luo ◽  
Ji Yang ◽  
Yanbing Guo ◽  
Adimali Piyadasa ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Propane Oxidation ◽  
Propane Combustion ◽  
Ceramic Honeycomb

Well-tuned TiO2–Al2O3 binary nanoarrays had been fabricated onto ceramic honeycombs and exhibited excellent robustness and catalytic activity for propane oxidation.

Oxidation state of palladium as a factor controlling catalytic activity of Pd/SiO2–Al2O3 in propane combustion

1998 ◽  
Vol 19 (3-4) ◽  
pp. 261-266 ◽  
Author(s):  
Yoshiteru Yazawa ◽  
Hisao Yoshida ◽  
Nobuyuki Takagi ◽  
Shin-ichi Komai ◽  
Atsushi Satsuma ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxidation State ◽  
Propane Combustion

High resolution electron microscopy of lanthanum phosphate crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 274-275
Author(s):  
J. C. Wheatley ◽  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
High Resolution ◽  
Petroleum Industry ◽  
High Resolution Electron Microscopy ◽  
Lanthanum Phosphate ◽  
Good Catalyst ◽  
Resolution Electron ◽  
Good Catalytic Activity ◽  
Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

Sign in / Sign up

Export Citation Format

Share Document