Title
Development of Bifunctional Hydrodeoxygenation Catalyst Rh-HY for the Generation of Biomass-Derived High-Energy-Density Fuels
Date Issued
01 June 2019
Access level
open access
Resource Type
journal article
Author(s)
Granados Fócil A.A.
Granados Fócil S.
Conde Sotelo V.M.
Grimm R.L.
González García F.
Rojas Santiago E.
Vera Ramírez M.A.
de los Reyes Heredia J.A.
Instituto Politécnico Nacional
Publisher(s)
Wiley-VCH Verlag
Abstract
Liquid-phase hydrodeoxygenation (HDO) of phenol, anisole, and guaiacol over rhodium-doped, high-silica content zeolite catalysts (Si/Al = 15), HY, is investigated in a high-pressure-fixed bed reactor. These catalysts are characterized by inductively coupled plasma optical emission spectrometry, scanning electron microscopy with energy-dispersive spectroscopy, thermogravimetric analysis, X-ray diffraction, N2 physisorption, ammonia temperature-programmed desorption, temperature-programmed oxidation, temperature-programmed reduction, 27Al magic angle spinning nuclear magnetic resonance, and X-ray photoelectron spectroscopy. The effects of reaction temperature (150–250 °C) and weight hourly space velocity (WSHV = 1.0–2.8 h−1) on activity, stability, and product distribution are investigated. The main products obtained from HDO reactions are methylcyclopentane, cyclohexane, methylcyclohexane, and bicyclohexyl. Cyclohexanone is the most abundant oxygenated product along with deactivation. For all tested catalysts, increasing the reaction temperature up to 250 °C improves the HDO reactions without significant activity or selectivity loss. Higher rhodium loading extends the catalyst life and increases the activity and cyclohexane selectivity for the guaiacol feed. The experiments indicate that anisole, phenol, and guaiacol undergo aromatic hydrogenation on rhodium particles first, followed by deoxygenation on the acid sites over zeolite combined with additional hydrogenation.
Volume
7
Issue
6
Language
English
OCDE Knowledge area
Tecnologías de bioprocesamiento, Biocatálisis, Fermentación
Scopus EID
2-s2.0-85064541630
Source
Energy Technology
ISSN of the container
21944288
Sources of information: Directorio de Producción Científica Scopus