Abatement of gaseous volatile organic compounds: A process perspective

Catalyst‐enhanced plasma oxidation of n‐butane over α‐MnO2 in a temperature‐controlled twin surface dielectric barrier discharge reactor

“…Thermal oxidation has high energy requirements (900°C–1000°C) and is only economically favorable for high VOC concentrations. [ 8,9 ] Thermocatalytic oxidation is prone to catalyst poisoning by compounds such as SO x , NO x , or CO. [ 9,10 ] In addition, both require a ramp‐up time to reach the high operating temperatures.…”

A Review about the Recent Advances in Selected NonThermal Plasma Assisted Solid–Gas Phase Chemical Processes

“…The reduction of the VOCs emissions one approach is the use of the so-called "add-on" equipment, which recover or destroy off-gas VOC pollutants; a second approach could be the change in processes and/or raw materials to reduce or destroy VOCs generation. Regarding the former, different techniques have been developed, including absorption, adsorption, thermal oxidation, catalytic oxidation, photocatalysis, NTP-assisted oxidation, membrane technology [143].…”

“…In the former, the catalyst is directly located into the NTP reactor, which can be filled with the catalyst either totally (as in a packed-bed or monolithic reactor) [148][149][150][151] or partially (as in the hybrid reactor) [152][153][154]. In the last decade, different reviews have been published regarding the combined use of NTP and catalysts in the abatement of the several VOCs categories; all the reviews have considered all the main features, including reactor configuration, catalysts typology, catalyst placement, discharge power, number of electrodes [9,[142][143][144][155][156][157][158][159][160]. The analysis of these reviews evidenced the enormous interest of the scientific community towards the issue of the VOCs abatement by means of the catalytic NTP-assisted oxidation processes, especially by using packed bed or DBD reactors.…”

The catalytic performances of α-MnO2 and δ-MnO2 catalysts synthesized from KMnO4 and ethanol for total oxidation of isopropanol

“…Khi nồng độ các VOCs tương đối thấp khoảng vài chục đến vài trăm ppm (trong trường hợp phát thải dân dụng), phương pháp xử lý bằng cách oxi hóa hoàn toàn các hợp chất VOCs trên xúc tác dị thể được cho là có hiệu quả cao so với các phương pháp khác như hấp thụ, hấp phụ, hay oxi hóa truyền thống chỉ sử dụng nhiệt [6,7]. Khi không có xúc tác, việc loại bỏ hoàn toàn hợp chất VOCs cần thực hiện ở nhiệt độ rất cao (lên đến 1000 °C).…”

“…Khi không có xúc tác, việc loại bỏ hoàn toàn hợp chất VOCs cần thực hiện ở nhiệt độ rất cao (lên đến 1000 °C). Ở nhiệt độ này, NOx có thể sinh ra và được xem như là sản phẩm phụ không mong muốn [7].…”