Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 330, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apcatb.2023.122575
Keywords
CO 2 hydrogenation; Bifunctional catalysts; Rice husk; Aromatics; Intimacy criterion
Ask authors/readers for more resources
In this study, integrated ZnZrOx/ZSM-5 catalysts with adjustable intimacy of the two components were designed for CO2 hydrogenation to aromatics. The intimacy was tuned using rice husk derived-SiO2 (bio-SiO2) as a platform, and the amount of biomass during catalyst fabrication was changed. It was found that optimizing the intimacy significantly improved the aromatics selectivity. Importantly, the dimensionless number intimacy was quantified, and it acted as a descriptor governing the aromatics selectivity by boosting the transfer and conversion of intermediates from metallic sites to acidic sites.
Herein, we designed integrated ZnZrOx/ZSM-5 catalysts with adjustable intimacy of the two components for CO2 hydrogenation to aromatics. The rice husk derived-SiO2 (denoted as bio-SiO2) was employed as a platform to tune the intimacy, which can be adjusted by changing the amount of biomass during the catalyst fabrication. It was found that the optimization of intimacy significantly improved the aromatics selectivity from 28% to 74.7%. Importantly, the dimensionless number intimacy was quantified by considering the particle size, density, specific surface areas, and the limiting distance for methanol back-mixing. The intimacy acted as a descriptor governing the aromatics selectivity in the CO2 hydrogenation reaction, which boosted the transfer and conversion of intermediates from metallic sites to acidic sites. These findings shed light on the understanding of the intimacy criterion for boosting CO2 hydrogenation to aromatics with the controlled spatial distributions of the two components on a porous bio-platform.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available