Synergistic Enhancement of Hydrolysis–Oxidation Drives Efficient Catalytic Elimination of Chlorinated Aromatics over VOx/TiO2 Catalysts at Low Temperature DOI
Yunfeng Ma,

Jianwen Lai,

Bingcheng Lin

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

The efficient catalytic elimination of toxic chlorinated aromatics (i.e., dioxins, chlorobenzenes, etc.) at low temperature is still a great challenge. Based on the VOx/TiO2 catalyst, hydrolysis-oxidation strategy (CeOx and WOx doping) was built for desirable low-temperature activity, product selectivity, H2O tolerance, chlorine desorption. in situ ex experimental characterizations density functional theory calculations revealed that hydrolysis sites favored molecular adsorption, C-Cl cleavage, HCl formation; meanwhile, oxidation enhanced activation reactive oxygen species improved mobility redox properties. storage/release capacity (33-53 fold) extended cycle (e.g., from V5+↔V4+ to V5+↔V4+↔V3+) deep oxidation. introduction triggered process promoted activity desorption due elevated generation ·O2- higher-activity ·OH. Furthermore, water resistance VOx/TiO2-based catalyst after application strategy. V-Ce-W/Ti exhibited remarkable removal efficiency dioxins (96.7-98.2%), which reduced 0.34-0.48 ng I-TEQ Nm-3 0.006-0.016 during pilot tests 160-180 °C, achieving ultralow emissions. This work provides practical guidance industry development efficiently eliminating organics flue gas.

Language: Английский

Comparative study on the performance of different carrier-based perovskite exhaust gas removal agent for diesel vehicles in underground coal mines DOI
Cheng-Yi Liu, Wen Nie, Yun Hua

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 361, P. 131604 - 131604

Published: Jan. 11, 2025

Language: Английский

Citations

1
Synergistic Enhancement of Hydrolysis–Oxidation Drives Efficient Catalytic Elimination of Chlorinated Aromatics over VOx/TiO2 Catalysts at Low Temperature DOI
Yunfeng Ma,

Jianwen Lai,

Bingcheng Lin

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

The efficient catalytic elimination of toxic chlorinated aromatics (i.e., dioxins, chlorobenzenes, etc.) at low temperature is still a great challenge. Based on the VOx/TiO2 catalyst, hydrolysis-oxidation strategy (CeOx and WOx doping) was built for desirable low-temperature activity, product selectivity, H2O tolerance, chlorine desorption. in situ ex experimental characterizations density functional theory calculations revealed that hydrolysis sites favored molecular adsorption, C-Cl cleavage, HCl formation; meanwhile, oxidation enhanced activation reactive oxygen species improved mobility redox properties. storage/release capacity (33-53 fold) extended cycle (e.g., from V5+↔V4+ to V5+↔V4+↔V3+) deep oxidation. introduction triggered process promoted activity desorption due elevated generation ·O2- higher-activity ·OH. Furthermore, water resistance VOx/TiO2-based catalyst after application strategy. V-Ce-W/Ti exhibited remarkable removal efficiency dioxins (96.7-98.2%), which reduced 0.34-0.48 ng I-TEQ Nm-3 0.006-0.016 during pilot tests 160-180 °C, achieving ultralow emissions. This work provides practical guidance industry development efficiently eliminating organics flue gas.

Language: Английский

Citations

0