Palladium catalysts deposited on silicon nitride in the deep oxidation of methane

被引：3
作者：
Kurzina, I. A. [2 ,1 ]
Aires, F. J. Cadete Santos
Cervantes, G. Garcia
Bertolini, J. C.
机构：
[1] Tomsk State Univ, Tomsk 634050, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY | 2006年 / 80卷 / 10期
关键词：
Palladium; Silicon Nitride; Methane Conversion; Palladium Catalyst; Deep Oxidation;
D O I：
10.1134/S0036024406100190
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The physicochemical and catalytic properties of palladium catalysts were studied in the deep oxidation of methane. The catalysts were deposited on silicon nitride from aqueous (Pd/Si3N4-a) and toluene (Pd/Si3N4-t) solutions of palladium acetate. The use of aqueous and organic solutions of palladium acetate, all other preparation conditions being equal, resulted in the formation of palladium systems with different catalytic properties. The sample from Pd/Si3N4-t was characterized by high activity and stability. The systems studied had different structures and adsorption properties of palladium nanoparticles, which influenced the form of reagent adsorption, catalytic properties, and mechanism of surface reactions. The suggestion was made that the solvent played a key role in the formation of the active surface of Pd-containing catalytic systems.
引用
收藏
页码：1661 / 1665
页数：5
相关论文
共 11 条
[1]  
Bomben, 1992, HDB XRAY PHOTOELECTR
[2]  
Bukhtiyarov VI, 2001, USP KHIM+, V70, P167
[3]   Catalyst microstructure and methane oxidation reactivity during the Pd⇆PdO transformation on alumina supports [J].
Datye, AK ;
Bravo, J ;
Nelson, TR ;
Atanasova, P ;
Lyubovsky, M ;
Pfefferle, L .
APPLIED CATALYSIS A-GENERAL, 2000, 198 (1-2) :179-196
[4]   Progress in silicon-based non-oxide structural ceramics [J].
Dressler, W ;
Riedel, R .
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS, 1997, 15 (1-3) :13-47
[5]   Preparation and characterization of model catalysts:: from ultrahigh vacuum to in situ conditions at the atomic dimension [J].
Freund, HJ ;
Bäumer, M ;
Libuda, J ;
Risse, T ;
Rupprechter, G ;
Shaikhutdinov, S .
JOURNAL OF CATALYSIS, 2003, 216 (1-2) :223-235
[6]   Total oxidation of methane over Pd catalysts supported on silicon nitride - Influence of support nature [J].
Kurzina, I ;
Aires, FJCS ;
Bergeret, G ;
Bertolini, JC .
CHEMICAL ENGINEERING JOURNAL, 2005, 107 (1-3) :45-53
[7]   Kinetics of PdO combustion catalysis [J].
McCarty, JG .
CATALYSIS TODAY, 1995, 26 (3-4) :283-293
[8]   The role of Pd precursors in the oxidation of carbon monoxide over Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts [J].
Monteiro, RS ;
Dieguez, LC ;
Schmal, M .
CATALYSIS TODAY, 2001, 65 (01) :77-89
[9]  
Nolte J., 2003, ICP EMISSION SPECTRO
[10]  
SANTONSAIRES FJC, 2003, NOVAS FRONTEIRAS CAT, P836
12