Affiliation:
1. Department of Chemical Engineering, University of the Basque Country UPV/EHU, P.O. Box 644, 48080 Bilbao, Spain
Abstract
The adequate configuration and the effect of the reduction was studied for the In2O3-ZrO2/SAPO-34 catalyst with the aim of improving its performance (activity and selectivity in the pseudo-steady state) for the hydrogenation of CO, CO2 and CO2/CO (COx) mixtures into olefins. The experiments were carried out in a packed bed reactor at 400 °C; 30 bar; a H2/COx ratio of 3; CO2/COx ratios of 0, 0.5 and 1; a space time (referred to as In2O3-ZrO2 catalyst mass) of 3.35 gInZr h molC−1; and a time on stream up to 24 h. The mixture of individual catalyst particles, with an SAPO-34 to In2O3-ZrO2 mass ratio of 1/2, led to a better performance than hybrid catalysts prepared via pelletizing and better than the arrangement of individual catalysts in a dual bed. The deactivation of the catalyst using coke deposition and the remnant activity in the pseudo-steady state of the catalyst were dependent on the CO2 content in the feed since the synergy of the capabilities of the SAPO-34 catalyst to form coke and of the In2O3-ZrO2 catalyst to hydrogenate its precursors were affected. The partial reduction of the In2O3-ZrO2/SAPO-34 catalyst (corresponding to a superficial In0/In2O3 ratio of 0.04) improved its performance over the untreated and fully reduced catalyst in the hydrogenation of CO to olefins, but barely affected CO2/CO mixtures’ hydrogenation.
Funder
Ministry of Science, Innovation and Universities of the Spanish Government
Basque Government
European Regional Development Funds
European Commission
Subject
Physical and Theoretical Chemistry,Catalysis,General Environmental Science
Reference47 articles.
1. International Energy Agency (2023, July 02). Net Zero by 2050—Analysis—IEA. Available online: https://www.iea.org/reports/world-energy-outlook-2021.
2. A Techno-Economic and Life Cycle Assessment for the Production of Green Methanol from CO2: Catalyst and Process Bottlenecks;Ramirez;J. Energy Chem.,2022
3. A Viewpoint on the Refinery of the Future: Catalyst and Process Challenges;Alabdullah;ACS Catal.,2020
4. Gholami, Z., Gholami, F., Tišler, Z., and Vakili, M. (2021). A Review on the Production of Light Olefins Using Steam Cracking of Hydrocarbons. Energies, 14.
5. Gholami, Z., Gholami, F., Tišler, Z., Tomas, M., and Vakili, M. (2021). A Review on Production of Light Olefins via Fluid Catalytic Cracking. Energies, 14.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献