Fuel, Journal Year: 2024, Volume and Issue: 381, P. 133311 - 133311
Published: Oct. 9, 2024
Language: Английский
Results in Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 104359 - 104359
Published: Feb. 1, 2025
Language: Английский
Citations
3
Crystals, Journal Year: 2025, Volume and Issue: 15(1), P. 83 - 83
Published: Jan. 16, 2025
Spent selective catalytic reduction (SCR) catalysts are hazardous wastes containing many valuable metals whose improper disposal can cause environmental pollution and resource waste. Therefore, it is significant to recover from spent SCR catalysts. In this study, the molten salt electrolytic method was employed treat catalyst direct electrosynthesis titanium alloys, which more environmentally friendly economical obtain metal or alloy secondary resources. A systematic investigation carried out via experimental analysis thermodynamic calculation. The results show that high-temperature pretreatment induces aggregation of W formation CaWO4. Through electrolysis, alloys Ti(W) Ti5Si3 were formed, with a recovery rate 80–87%. process reaction mechanism also investigated. It suggested an effective way
Language: Английский
Citations
1
Ironmaking & Steelmaking Processes Products and Applications, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 22, 2025
With the widespread adoption of selective catalytic reduction (SCR) denitrification technology and enforcement ultra-low emissions regulations, annual production spent SCR catalyst, classified as hazardous waste, has been increasing. This study presents an innovative method integrating catalysts into carbon-containing pellets processed in a rotary hearth furnace. The research examines impact addition catalyst on comprehensive performance characteristics carbon-bearing pellets. results indicate that drop number for both green dry peaks at 5.0 wt-% addition. When reaches 7.5 wt-%, drops compressive strength reach their peaks. Additionally, direct iron (DRI) gradually increases from 1794 N/pre to 3476 N/pre. metallisation zinc removal rates DRI are maintained high levels, exceeding 90% 99%, respectively. interaction between TiO 2 FeO forms titanium–iron compounds, reducing low-melting eutectic formation. catalyst's active sites also promote CO production, which enhances oxide leads early formation grains, contributing increased strength. process not only provides effective way manage but improves pellet performance.
Language: Английский
Citations
0
Crystals, Journal Year: 2025, Volume and Issue: 15(2), P. 141 - 141
Published: Jan. 28, 2025
The molten-salt electrolytic method was employed to recycle spent SCR catalyst prepare TiC compound. A systematic investigation has been carried out through thermodynamic calculation and experimental analysis. effects of graphite content, cell voltage, electrolyzing temperature, time on products were explored. results show that a suitable amount high temperature are beneficial promote the formation compounds. It also found electroreduction catalyst/graphite can completely transform it into compound in relatively short time. final product is confirmed be solid solution (Ti, W, Si, V)C. Meanwhile, process reaction mechanism investigated analysis intermediates calculation. potential application as reinforcement metal matrix, which additional-value utilization for catalysts.
Language: Английский
Citations
0
Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116083 - 116083
Published: March 1, 2025
Language: Английский
Citations
0
Fuel, Journal Year: 2024, Volume and Issue: 381, P. 133311 - 133311
Published: Oct. 9, 2024
Language: Английский
Citations
2