Interações hiperfinas em catalisadores metálicos

Química Nova

Henrique Saitovitch²  Paulo R. J. Silva²  Fabio B. Passos¹ 

[1] ,Ministério de Ciência e Tecnologia Centro Brasileiro de Pesquisas Físicas Rio de Janeiro RJ

关键词: angular correlation;    hyperfine interactions;    supported metallic catalysts;   

DOI  :  10.1590/S0100-40422005000300027

来源: SciELO

【 摘 要 】

Heterogeneous catalysts are of fundamental importance in several modern chemical processes. The characterization of catalysts is an issue of very present interest as it can provide a better understanding of the fundamental aspects of the catalytic phenomena, thus helping in the development of more efficient catalysts. In order to extend and improve the characterization of catalysts, new and less conventional methods are being applied, such as nuclear spectroscopies. In this paper we focus on the application of angular correlation, with can be used to resolve different local environments of probe atoms in solids and can be applied, as shown here, in the characterization of heterogeneous catalysts. A brief theoretical introduction is given and experimental results related to catalytic systems of alumina and niobia-supported Pt-In and Pd-In catalysts are presented.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License