Desorption of Furfural from Bimetallic Pt-Fe Oxides/Alumina Catalysts

Materials

Gloria Lourdes Dimas-Rivera²  Javier Rivera de la Rosa²  Carlos J. Lucio-Ortiz²  José Antonio De los Reyes Heredia³  Virgilio González González¹ 

[1] Universidad Autónoma de Nuevo León, UANL, Centro de Innovación, Investigación y Desarrollo en Ingeniería y Tecnología (CIIDIT), Km 10 de la nueva carretera al Aeropuerto Internacional de Monterrey, PIIT Monterrey, Apodaca, Nuevo León 66600, Mexico; E-Mail:;Universidad Autónoma de Nuevo León, UANL, Facultad de Ciencias Químicas, Ave. Universidad S/N, Cd. Universitaria, San Nicolás de los Garza, N.L. 64451, Mexico; E-Mails:;Universidad Autónoma Metropolitana Iztapalapa, Departamento de Ingeniería Química, Mexico, D.F. 09340, Mexico; E-Mail:

关键词: furfural;    bimetallic;    Pt-Fe;    desorption;    impregnation;    γ-Al₂O₃;   

DOI  :  10.3390/ma7010527

来源: mdpi

【 摘 要 】

In this work, the desorption of furfural, which is a competitive intermediate during the production of biofuel and valuable aromatic compounds, was studied using pure alumina, as well as alumina impregnated with iron and platinum oxides both individually and in combination, using thermogravimetric analysis (TGA). The bimetallic sample exhibited the lowest desorption percentage for furfural. High-resolution transmission electron microscopy (HRTEM) imaging revealed the intimate connection between the iron and platinum oxide species on the alumina support. The mechanism of furfural desorption from the Pt-Fe/Al₂O₃ 0.5%-0.5% sample was determined using physisorbed furfural instead of chemisorbed furfural; this mechanism involved the oxidation of the C=O group on furfural by the catalyst. The oxide nanoparticles on γ-Al₂O₃ support helped to stabilize the furfural molecule on the surface.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland