SURFACE-FEATURES AND CATALYTIC PERFORMANCE OF PLATINUM ALUMINA CATALYSTS IN SLURRY-PHASE HYDROGENATION

Citation
Ma. Gutierrezortiz et al., SURFACE-FEATURES AND CATALYTIC PERFORMANCE OF PLATINUM ALUMINA CATALYSTS IN SLURRY-PHASE HYDROGENATION, Industrial & engineering chemistry research, 32(11), 1993, pp. 2457-2463
Citations number
31
Categorie Soggetti
Engineering, Chemical
ISSN journal
08885885
Volume
32
Issue
11
Year of publication
1993
Pages
2457 - 2463
Database
ISI
SICI code
0888-5885(1993)32:11<2457:SACPOP>2.0.ZU;2-P
Abstract
Several platinum catalysts supported on three commercial gamma-alumina s were prepared by impregnation and anionic exchange using aqueous sol utions of H2PtCl6. A number of methods were used to characterize the p recursors as well as the final catalysts, including TGA, TPR, and hydr ogen chemisorption at 298 K. TPR measurements showed two reduction pea ks for the catalysts: the first one corresponding to reduction of the metal precursor to platinum and the second one associated to formation of a surface complex, Pt-Al2O3-x, with partial reduction of the suppo rt. The activity of the different catalysts was tested in the slurry-p hase hydrogenation of benzene. The results obtained in the activity me asurements have been correlated to the characteristics of the catalyst s.