Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature

The effect of calcination temperature on the physical and chemical properties of cryptomelane (K-OMS-2) was investigated. The K-OMS-2 was synthesized via a hydrothermal method and calcined at 200-600ºC. The catalytic activities of the K-OMS-2 samples were tested in packed bed reactor (PBR) on toluen...

Full description

Bibliographic Details
Main Authors:	Chatkamol Kaewbuddee, Pinit Kidkhunthod, Narong Chanlek, Rattabal Khunphonoi, Kitirote Wantala
Format:	Article
Language:	English
Published:	Penerbit Universiti Kebangsaan Malaysia 2019
Online Access:	http://journalarticle.ukm.my/13739/ http://journalarticle.ukm.my/13739/ http://journalarticle.ukm.my/13739/1/14%20Chatkamol%20Kaewbuddee.pdf

id	ukm-13739
recordtype	eprints
spelling	ukm-137392019-11-29T09:19:39Z http://journalarticle.ukm.my/13739/ Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature Chatkamol Kaewbuddee, Pinit Kidkhunthod, Narong Chanlek, Rattabal Khunphonoi, Kitirote Wantala, The effect of calcination temperature on the physical and chemical properties of cryptomelane (K-OMS-2) was investigated. The K-OMS-2 was synthesized via a hydrothermal method and calcined at 200-600ºC. The catalytic activities of the K-OMS-2 samples were tested in packed bed reactor (PBR) on toluene oxidation. The physical and chemical properties were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), specific surface area computed by Brunauer-Emmett-Teller (BET) equation, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) techniques. The increasing of the calcination temperature from 200-600ºC led to transform the phases from MnO2 to Mn2O3. The morphology of K-OMS-2 which observed in a nest-like type could promote the catalytic activity. With increasing the calcination temperature, the amount of Oads/Olatt molar ratio slightly increased whereas OH vibrations analyzed by FTIR insignificantly increased. The comparison of interaction effect indicated that the Oads/Olatt molar ratio played an important role in the oxidation performance more than the Mn3+/Mn4+ molar ratio. Penerbit Universiti Kebangsaan Malaysia 2019-07 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/13739/1/14%20Chatkamol%20Kaewbuddee.pdf Chatkamol Kaewbuddee, and Pinit Kidkhunthod, and Narong Chanlek, and Rattabal Khunphonoi, and Kitirote Wantala, (2019) Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature. Sains Malaysiana, 48 (7). pp. 1447-1457. ISSN 0126-6039 http://www.ukm.my/jsm/malay_journals/jilid48bil7_2019/KandunganJilid48Bil7_2019.html
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The effect of calcination temperature on the physical and chemical properties of cryptomelane (K-OMS-2) was investigated. The K-OMS-2 was synthesized via a hydrothermal method and calcined at 200-600ºC. The catalytic activities of the K-OMS-2 samples were tested in packed bed reactor (PBR) on toluene oxidation. The physical and chemical properties were characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), specific surface area computed by Brunauer-Emmett-Teller (BET) equation, Fourier-transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and X-ray absorption near edge structure (XANES) techniques. The increasing of the calcination temperature from 200-600ºC led to transform the phases from MnO2 to Mn2O3. The morphology of K-OMS-2 which observed in a nest-like type could promote the catalytic activity. With increasing the calcination temperature, the amount of Oads/Olatt molar ratio slightly increased whereas OH vibrations analyzed by FTIR insignificantly increased. The comparison of interaction effect indicated that the Oads/Olatt molar ratio played an important role in the oxidation performance more than the Mn3+/Mn4+ molar ratio.
format	Article
author	Chatkamol Kaewbuddee, Pinit Kidkhunthod, Narong Chanlek, Rattabal Khunphonoi, Kitirote Wantala,
spellingShingle	Chatkamol Kaewbuddee, Pinit Kidkhunthod, Narong Chanlek, Rattabal Khunphonoi, Kitirote Wantala, Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
author_facet	Chatkamol Kaewbuddee, Pinit Kidkhunthod, Narong Chanlek, Rattabal Khunphonoi, Kitirote Wantala,
author_sort	Chatkamol Kaewbuddee,
title	Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
title_short	Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
title_full	Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
title_fullStr	Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
title_full_unstemmed	Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature
title_sort	chemical surface analysis on post-thermal treatment of the k-oms-2 catalysts and catalytic oxidation efficiency at low temperature
publisher	Penerbit Universiti Kebangsaan Malaysia
publishDate	2019
url	http://journalarticle.ukm.my/13739/ http://journalarticle.ukm.my/13739/ http://journalarticle.ukm.my/13739/1/14%20Chatkamol%20Kaewbuddee.pdf
first_indexed	2023-09-18T20:05:32Z
last_indexed	2023-09-18T20:05:32Z
_version_	1777407132529852416

Chemical surface analysis on post-thermal treatment of the K-OMS-2 catalysts and catalytic oxidation efficiency at low temperature

Similar Items