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Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content

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Заглавие Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content
 
Автор Vikrant, K.
Kim, K. -H.
Dong, F.
Heynderickx, P. M.
Boukhvalov, D. W.
 
Тематика CATALYTIC OXIDATION
FORMALDEHYDE
INDOOR AIR
SOLID BIOWASTE
VOLATILE ORGANIC COMPOUNDS
ANIMALS
CATALYSIS
EGG SHELL
FORMALDEHYDE
GASES
HYDROGEN
MANGANESE COMPOUNDS
OXIDATIVE STRESS
OXIDES
OXYGEN
SILVER
TEMPERATURE
CALCIUM CARBONATE
CATALYSTS
CATALYTIC OXIDATION
FORMALDEHYDE
INDOOR AIR POLLUTION
PRECIOUS METALS
SILVER COMPOUNDS
TEMPERATURE
VOLATILE ORGANIC COMPOUNDS
CALCIUM CARBONATE
FORMALDEHYDE
HYDROGEN
MANGANESE DIOXIDE
METAL
OXYGEN
SILVER
FORMALDEHYDE
MANGANESE DERIVATIVE
MANGANESE DIOXIDE
OXIDE
SILVER
BIMETALLIC CATALYSTS
BIOWASTES
EGG-SHELL CATALYSTS
EGGSHELL WASTES
GAS HOURLY SPACE VELOCITIES
GASEOUS FORMALDEHYDE
INDOOR AIR
LOWS-TEMPERATURES
OXIDATIVE REMOVALS
SOLID BIOWASTE
CATALYST
EGGSHELL
FORMALDEHYDE
INDOOR AIR
LOW TEMPERATURE
OXIDATION
OXIDATIVE STRESS
POLLUTANT REMOVAL
SILVER
SOLID WASTE
VOLATILE ORGANIC COMPOUND
WASTE MANAGEMENT
AMBIENT AIR
ARTICLE
CATALYSIS
CATALYST
EGG SHELL
LOW TEMPERATURE
OXIDATION
REDUCTION (CHEMISTRY)
STEADY STATE
SYNERGISTIC EFFECT
ANIMAL
CHEMISTRY
EGG SHELL
GAS
OXIDATIVE STRESS
TEMPERATURE
MANGANESE OXIDE
 
Описание Under dark/low temperature (DLT) conditions, the oxidative removal of gaseous formaldehyde (FA) was studied using eggshell waste supported silver (Ag)-manganese dioxide (MnO2) bimetallic catalysts. To assess the synergistic effects between the two different metals, 0.03%-Ag-(0.5–5%)-MnO2/Eggshell catalysts were prepared and employed for DLT-oxidation of FA. The steady-state FA oxidation reaction rate (mmol g-1 h-1), when measured using 100 ppm FA at 80 °C (gas hourly space velocity (GHSV) of 5308 h-1), varied as follows: Ag-1.5%-MnO2/Eggshell-R (9.4) > Ag-3%-MnO2/Eggshell-R (8.1) > Ag-1.5%-MnO2/Eggshell (7.5) > Ag-5%-MnO2/Eggshell-R (7.2) > Ag-1.5%-MnO2/CaCO3-R (6.8) > MnO2-R (6) > Ag-0.5%-MnO2/Eggshell-R (3.2) > Ag/Eggshell-R (2.6). (Here, ‘R’ denotes hydrogen-based thermochemical reduction pretreatment.) The temperature required for 90% FA conversion (T90) at the same GHSV exhibited a contrary ordering: Ag/Eggshell-R (175 °C) > Ag-0.5%-MnO2/Eggshell-R (123 °C) > Ag-5%-MnO2/Eggshell-R (113 °C) > MnO2-R (99 °C) > Ag-1.5%-MnO2/Eggshell (96 °C) > Ag-3%-MnO2/Eggshell-R (93 °C) > Ag-1.5%-MnO2/Eggshell-R (77 °C). The eggshell catalyst outperformed the ones made of commercial calcium carbonate due to the presence of defects in the former. The MnO2 co-catalyst enhances the catalytic activities through the capture and activation of atmospheric oxygen (O2) with rapid catalytic regeneration. Also, MnO2 favorably captures the hydrogen of the adsorbed FA molecules to make the oxidation pathway thermodynamically more favorable. © 2022 Elsevier B.V.
Ministry of Science
National Research Foundation of Korea, NRF
Universiteit Gent
Ministry of Science and ICT, South Korea, MSIT, (2021R1A3B1068304)
This work was supported by a grant from the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ITC (MSIT) of the Korean government (Grant No: 2021R1A3B1068304 ). P.M.H. would like to thank the Research and Development Program of Ghent University Global Campus (GUGC), Korea.
 
Дата 2024-04-08T11:06:01Z
2024-04-08T11:06:01Z
2022
 
Тип Article
Journal article (info:eu-repo/semantics/article)
Published version (info:eu-repo/semantics/publishedVersion)
 
Идентификатор Vikrant, K, Kim, KH, Dong, F, Heynderickx, PM & Boukhvalov, DW 2022, 'Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content', Journal of Hazardous Materials, Том. 434, 128857. https://doi.org/10.1016/j.jhazmat.2022.128857
Vikrant, K., Kim, K. H., Dong, F., Heynderickx, P. M., & Boukhvalov, D. W. (2022). Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content. Journal of Hazardous Materials, 434, [128857]. https://doi.org/10.1016/j.jhazmat.2022.128857
0304-3894
Final
All Open Access; Green Open Access
https://biblio.ugent.be/publication/8749525/file/01GWH2KBC8T57551KXF40CBAYF.pdf
https://biblio.ugent.be/publication/8749525/file/01GWH2KBC8T57551KXF40CBAYF.pdf
http://elar.urfu.ru/handle/10995/131255
10.1016/j.jhazmat.2022.128857
85128204874
000793534300002
 
Язык en
 
Права Open access (info:eu-repo/semantics/openAccess)
 
Формат application/pdf
 
Издатель Elsevier B.V.
 
Источник Journal of Hazardous Materials
Journal of Hazardous Materials