MOCVD palladium and platinum supported on alumina catalysts: preparation and characterization

Z. K. Lopez, J. R. Vargas, M. A. Valenzuela, D. R. Acosta

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

An horizontal hot-wall MOCVD reactor was used to prepare palladium and platinum catalysts supported on alumina. A conventional impregnated Pt on alumina catalyst was prepared as comparison. The solids were characterized by XRD, Auger spectroscopy, HREM and H2-TPR. The operation conditions of the MOCVD reactor were fixed preparing several Pd catalysts until to find the appropriate deposition zone. The particle size of Pt catalysts impregnated catalyst, measured by XRD. The HREM image of the Pt MOCVD catalyst showed a narrower particle size ranging from 1 to 4 nm. After calcination three Pt compounds were detected by TPR, which were attributed to PtO, PtO2 and Pt-Al2O3 interaction in MOCVD preparation. Additionally, a clear reduction of surface oxygens of alumina was also observed.

Original languageEnglish
Pages (from-to)87-92
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume497
StatePublished - 1998
Externally publishedYes
EventProceedings of the 1997 MRS Fall Symposium - Boston, MA, USA
Duration: 1 Dec 19973 Dec 1997

Fingerprint

Dive into the research topics of 'MOCVD palladium and platinum supported on alumina catalysts: preparation and characterization'. Together they form a unique fingerprint.

Cite this