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Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors

A systematic investigation on the performance of fixed-bed and monolithic reactors for dynamic photoinduced CO2 reduction with CH4 via dry and bi-reforming of methane over La-modified TiO2 nanocatalyst under UV light is conducted. La/TiO2 is synthesized using a modified sol–gel method, and the monol...

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主要な著者: Tahir, Beenish, Muhammad Tahir, Muhammad Tahir, Saidina Amin, Nor Aishah
フォーマット: 論文
出版事項: Wiley-VCH Verlag 2020
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TP Chemical technology
オンライン･アクセス:http://eprints.utm.my/id/eprint/91340/
http://dx.doi.org/10.1002/ente.202000106
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spelling my.utm.913402021-06-30T12:08:02Z http://eprints.utm.my/id/eprint/91340/ Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors Tahir, Beenish Muhammad Tahir, Muhammad Tahir Saidina Amin, Nor Aishah TP Chemical technology A systematic investigation on the performance of fixed-bed and monolithic reactors for dynamic photoinduced CO2 reduction with CH4 via dry and bi-reforming of methane over La-modified TiO2 nanocatalyst under UV light is conducted. La/TiO2 is synthesized using a modified sol–gel method, and the monolithic-coated catalyst is synthesized using a dip-coating method. The performance of La/TiO2 is tested for different reforming systems in both types of photoreactors. The results reveal 5 wt% La/TiO2 effectively promotes CO2 and CH4 conversion to CO, H2, and C2H6, whereas catalyst performance is greatly enhanced in the presence of H2O in both types of reactors via bireforming of methane (BRM). Lower temperature is favorable for CO production, whereas H2 and C2H6 yields are enhanced at higher temperature. Notably, the monolith photoreactor is favorable for enhanced CO and H2 yields. More interestingly, quantum yield (QY) for H2 in BRM using monolith photoreactor is 1.402%—an increment of almost 4.99-fold than dry reforming of methane (DRM). This can be attributed to enhanced CO2 adsorption with hindered charge recombination by La, appropriate redox potentials, larger illuminated surface area, and higher photon flux. The prolonged La/TiO2 activity in a monolith photoreactor for enhanced CO and H2 production signifies its potential for CO2 conversion applications. Wiley-VCH Verlag 2020-07 Article PeerReviewed Tahir, Beenish and Muhammad Tahir, Muhammad Tahir and Saidina Amin, Nor Aishah (2020) Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors. Energy Technology, 8 (7). p. 2000106. ISSN 2194-4288 http://dx.doi.org/10.1002/ente.202000106
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Tahir, Beenish
Muhammad Tahir, Muhammad Tahir
Saidina Amin, Nor Aishah
Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
description A systematic investigation on the performance of fixed-bed and monolithic reactors for dynamic photoinduced CO2 reduction with CH4 via dry and bi-reforming of methane over La-modified TiO2 nanocatalyst under UV light is conducted. La/TiO2 is synthesized using a modified sol–gel method, and the monolithic-coated catalyst is synthesized using a dip-coating method. The performance of La/TiO2 is tested for different reforming systems in both types of photoreactors. The results reveal 5 wt% La/TiO2 effectively promotes CO2 and CH4 conversion to CO, H2, and C2H6, whereas catalyst performance is greatly enhanced in the presence of H2O in both types of reactors via bireforming of methane (BRM). Lower temperature is favorable for CO production, whereas H2 and C2H6 yields are enhanced at higher temperature. Notably, the monolith photoreactor is favorable for enhanced CO and H2 yields. More interestingly, quantum yield (QY) for H2 in BRM using monolith photoreactor is 1.402%—an increment of almost 4.99-fold than dry reforming of methane (DRM). This can be attributed to enhanced CO2 adsorption with hindered charge recombination by La, appropriate redox potentials, larger illuminated surface area, and higher photon flux. The prolonged La/TiO2 activity in a monolith photoreactor for enhanced CO and H2 production signifies its potential for CO2 conversion applications.
format Article
author Tahir, Beenish
Muhammad Tahir, Muhammad Tahir
Saidina Amin, Nor Aishah
author_facet Tahir, Beenish
Muhammad Tahir, Muhammad Tahir
Saidina Amin, Nor Aishah
author_sort Tahir, Beenish
title Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
title_short Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
title_full Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
title_fullStr Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
title_full_unstemmed Photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
title_sort photoinduced dry and bireforming of methane to fuels over la-modified tio2 in fixed-bed and monolith reactors
publisher Wiley-VCH Verlag
publishDate 2020
url http://eprints.utm.my/id/eprint/91340/
http://dx.doi.org/10.1002/ente.202000106
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