Statistical analysis and optimization of temperature programmed reduction (TPR) analysis

Química Nova

Universidade Federal da Bahia, Salvador, Brasil¹  Centro de Tecnologia Mineral, Rio de Janeiro, Brasil¹  Moreno, Esteban Lopez¹  Universidade Federal de Rio de Janeiro, Rio de Janeiro, Brasil¹  Andrade, Heloysa Martins Carvalho¹  Nele, Marcio¹ 

关键词: TPR;    temperature programmed reduction;    experimental design.;   

DOI  :  10.1590/S0100-40422006000400003

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The effect of operational variables and their interaction in TPR profiles was studied using a fractional factorial experimental design. The heating rate and the reducing agent concentration were found to be the most important variables determining the resolution and sensitivity of the technique. They showed opposite effects. Therefore, they should be manipulated preferentially in order to obtain optimized TPR profiles. The effect of sample particle size was also investigated. The tests were carried out within a Cu/Zn/Al2O3 catalyst used for the water-gas shift reaction that presented two distinct species of Cu2+ in TPR profiles.

【 授权许可】

Unknown