Abstract
Mesopore incorporation into ZSM-5 enhances the dispersion of Pd nanoparticles significantly accelerating m-cresol conversion relative to a conventional microporous ZSM-5, and dramatically increasing selectivity towards the desired methylcyclohexane deoxygenated product.
Highlights
Mesopore incorporation into ZSM-5 enhances the dispersion of Pd nanoparticles throughout the hierarchical framework, significantly accelerating m-cresol conversion relative to a conventional microporous ZSM-5, and dramatically increasing selectivity towards the desired methylcyclohexane deoxygenated product
Bifunctional transition metal-solid acid HDO catalysts are advantageous in combining a metallic component to promote C C and C O hydrogenation, and an acid component to dehydrate aliphatic oxygenates (e.g. Al-SBA-15, ZSM-5 and beta zeolites, and sulfated metal oxides such as SO4/ZrO2)
Hierarchical mesoporous zeolites may be advantageous for improving the dispersion of promoters throughout the porous architecture, rather than their localisation on the external surface of conventional microporous counterparts.[20]
Summary
Mesopore incorporation into ZSM-5 enhances the dispersion of Pd nanoparticles throughout the hierarchical framework, significantly accelerating m-cresol conversion relative to a conventional microporous ZSM-5, and dramatically increasing selectivity towards the desired methylcyclohexane deoxygenated product. Increasing the acid site density further promotes m-cresol conversion and methylcyclohexane selectivity through efficient dehydration of the intermediate methylcyclohexanol.
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