OXIDATIVE DEHYDROGENATION OF PROPANE BY RARE EARTH PHOSPHATES SUPPORTED ON AL-PILC

Avances en Ciencias e Ingeniería. 2012;3(4):103-115

 

Journal Homepage

Journal Title: Avances en Ciencias e Ingeniería

ISSN: 0718-8706 (Online)

Publisher: Executive Business School

LCC Subject Category: Technology: Engineering (General). Civil engineering (General) | Science: Science (General)

Country of publisher: Chile

Language of fulltext: Spanish; Castilian

Full-text formats available: PDF

 

AUTHORS

Carolina De Los Santos
Pilar Yeste
Marta Sergio
Jorge Castiglioni

EDITORIAL INFORMATION

Peer review

Editorial Board

Instructions for authors

Time From Submission to Publication: 14 weeks

 

Abstract | Full Text

Catalytic activity in propane oxidative dehydrogenation of rare earth phosphates LnPO4 (where Ln = La, Ce, Pr, Nd, Sm) and of the same supported by an aluminum pillared clay, of high specific surface area, is presented. The solids were characterized by TGA, XRD, nitrogen adsorption and immediate analysis after reaction in order to determine eventual carbon formation. Catalytic assays were performed at temperatures in the range 400oC-600oC, the reaction mixture was C3H8/O2/Ar = 10/10/80. All the catalysts were active. The reaction products were H2, CO, CO2, CH4, C2H4 and C3H6 and there were no organic oxygenated compounds detected. Although all the investigated systems were active, the Al-PILC supported catalysts presented a higher activity than the bulk materials. In this context, the samarium supported catalyst showed a propene yield increase from 4% to 10% compared with bulk samarium phosphate at 600°C. This effect was attributed to the increase in the specific surface area.