Catalytic hydrodeoxygenation of simulated phenolic bio-oil to cycloalkanes and aromatic hydrocarbons over bifunctional metal/acid catalysts of Ni/HBeta, Fe/HBeta and NiFe/HBeta

Bifunctional metal/acid catalysts of 5wt% Ni/HBeta, 5wt% Fe/HBeta, 2.5wt% Ni-2.5wt% Fe/HBeta (NiFe-5/HBeta) and 5wt% Ni-5wt% Fe/HBeta (NiFe-10/HBeta) were used for hydrodeoxygenation (HDO) of a simulated phenolic bio-oil consisting of phenol (50wt%), o-cresol (25wt%) and guaiacol (25wt%). Nickel and...

Full description

Saved in:
Bibliographic Details
Published in:Journal of industrial and engineering chemistry (Seoul, Korea) 2016, 35(0), , pp.268-276
Main Authors: Shafaghat, Hoda, Rezaei, Pouya Sirous, Daud, Wan Mohd Ashri Wan
Format: Article
Language:English
Subjects:
Bifunctional catalyst
Bimetallic NiFe/HBeta
Catalysis
Catalysts
Hydrocarbons
Hydrogenation
Hydrogenolysis
Iron
Iron compounds
Nickel
Nickel base alloys
Phenolic bio-oil
Simulation
화학공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bifunctional metal/acid catalysts of 5wt% Ni/HBeta, 5wt% Fe/HBeta, 2.5wt% Ni-2.5wt% Fe/HBeta (NiFe-5/HBeta) and 5wt% Ni-5wt% Fe/HBeta (NiFe-10/HBeta) were used for hydrodeoxygenation (HDO) of a simulated phenolic bio-oil consisting of phenol (50wt%), o-cresol (25wt%) and guaiacol (25wt%). Nickel and iron metals were supported on hydrogen form Beta zeolite (HBeta) under similar ion-exchange conditions. BET surface area and acid sites density of Ni/HBeta, Fe/HBeta, NiFe-5/HBeta and NiFe-10/HBeta were 463, 445, 455, 417m2/g and 0.53, 0.48, 0.50, 0.38mmol/g, respectively. Cycloalkanes (21.39wt%) and aromatic hydrocarbons (20.21wt%) were the dominant hydrocarbons obtained over monometallic catalysts of Ni/HBeta and Fe/HBeta through reactions of hydrogenation and hydrogenolysis, respectively. It was revealed that both hydrogenation and hydrogenolysis mechanisms were effectively proceeded over the bimetallic catalyst of NiFe/HBeta which showed enhanced HDO efficiency compared to monometallic catalysts of Ni/HBeta and Fe/HBeta due to the synergistic effect between the two metals. The effect of reaction temperature on HDO efficiency of NiFe-10/HBeta catalyst was investigated at 220, 260, 300 and 340°C. Maximum catalytic activity and hydrocarbons selectivity was observed at 300°C. Replacement of water with methanol as solvent in HDO of the simulated phenolic bio-oil over NiFe-10/HBeta remarkably reduced the selectivity towards hydrocarbons.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2016.01.001