Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김기현 | - |
dc.date.accessioned | 2022-11-14T02:09:35Z | - |
dc.date.available | 2022-11-14T02:09:35Z | - |
dc.date.issued | 2022-07 | - |
dc.identifier.citation | Journal of Hazardous Materials, v. 434, article no. 128857, Page. 1-18 | en_US |
dc.identifier.issn | 0304-3894;1873-3336 | en_US |
dc.identifier.uri | https://www.sciencedirect.com/science/article/pii/S030438942200646X?via%3Dihub | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/176656 | - |
dc.description.abstract | 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. | en_US |
dc.description.sponsorship | 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. | en_US |
dc.language | en | en_US |
dc.publisher | Elsevier B.V. | en_US |
dc.subject | Formaldehyde | en_US |
dc.subject | Volatile organic compounds | en_US |
dc.subject | Solid biowaste | en_US |
dc.subject | Catalytic oxidation | en_US |
dc.subject | Indoor air | en_US |
dc.title | Low-temperature oxidative removal of gaseous formaldehyde by an eggshell waste supported silver-manganese dioxide bimetallic catalyst with ultralow noble metal content | en_US |
dc.type | Article | en_US |
dc.relation.volume | 434 | - |
dc.identifier.doi | 10.1016/j.jhazmat.2022.128857 | en_US |
dc.relation.page | 1-18 | - |
dc.relation.journal | Journal of Hazardous Materials | - |
dc.contributor.googleauthor | Vikrant, Kumar | - |
dc.contributor.googleauthor | Kim, Ki-Hyun | - |
dc.contributor.googleauthor | Dong, Fan | - |
dc.contributor.googleauthor | Heynderickx, Philippe M. | - |
dc.contributor.googleauthor | Boukhvalov, Danil W. | - |
dc.sector.campus | S | - |
dc.sector.daehak | 공과대학 | - |
dc.sector.department | 건설환경공학과 | - |
dc.identifier.pid | kkim61 | - |
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