Catalytic Reduction of SO2 with CO over LaCoO3 Perovskites Catalysts: Effect of Fe Doping and Pre-Sulfurization

Catalysts, Journal Year: 2025, Volume and Issue: 15(3), P. 291 - 291

Published: March 19, 2025

SO2 emissions are a major source of air pollution, and the catalytic reduction to elemental sulfur by CO represents promising solution. This study investigates effects Fe doping pre-sulfurization on performance LaCoO₃ perovskite catalysts. A series Fe-doped LaCoO3 perovskites were synthesized via sol–gel method evaluated for CO. The results showed that LaCo0.8Fe0.2O3 exhibited highest performance, achieving 84.0% conversion at 500 °C. oxygen-free sulfurization (OFS) treatment compared with oxygen-assisted (OAS) significantly enhanced activity, reaching 95.9% from 80.0% 450 °C lower byproduct generation. Characterization analyses demonstrated OFS facilitated formation active species oxygen vacancies catalyst surface while also enhancing adsorption capacity reactant gases. These factors identified as key contributors improved driven combination redox carbonyl sulfide (COS) intermediate mechanism. findings suggest is an effective strategy improve CO, offering more environmentally friendly solution emission control through resource utilization.

Language: Английский

Reactor Design and Process Optimization in Chemical Looping Combustion: Insights into Fuel Types, Oxygen Carriers, and Process Design

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116561 - 116561

Published: April 1, 2025

Language: Английский