Photocatalytic reduction of carbon dioxide into gaseous hydrocarbon using TiO2 pellets

Tan, Seng Sing, Zou, Linda and Hu, Eric 2006, Photocatalytic reduction of carbon dioxide into gaseous hydrocarbon using TiO2 pellets, Catalysis today, vol. 115, no. 1-4, pp. 269-273.

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Title Photocatalytic reduction of carbon dioxide into gaseous hydrocarbon using TiO2 pellets
Formatted title Photocatalytic reduction of carbon dioxide into gaseous hydrocarbon using TiO2 pellets
Author(s) Tan, Seng Sing
Zou, Linda
Hu, Eric
Journal name Catalysis today
Volume number 115
Issue number 1-4
Start page 269
End page 273
Publisher Elsevier BV
Place of publication Amsterdam, The Netherlands
Publication date 2006-06-30
ISSN 0920-5861
1873-4308
Keyword(s) photocatalysis
reduction of CO2
energy storage
titanium oxide pellets
Summary It has been shown that CO2 could be transformed into hydrocarbons when it is in contact with water vapour and catalysts under UV irradiation. This paper presents an experimental set-up to study the process employing a new approach of heterogeneous photocatalysis using pellet form of catalyst instead of immobilized catalysts on solid substrates. In the experiment, CO2 mixed with water vapour in saturation state was discharged into a quartz reactor containing porous TiO2 pellets and illuminated by various UV lamps of different wavelengths for 48 h continuously. The gaseous products extracted were identified using gas chromatography. The results confirmed that CO2 could be reformed in the presence of water vapour and TiO2 pellets into CH4 under continuous UV irradiation at room conditions. It showed that when UVC (253.7 nm) light was used, total yield of methane was approximately 200 ppm which was a fairly good reduction yield as compared to those obtained from the processes using immobilized catalysts through thin-film technique and anchoring method. CO and H2 were also detected. Switching from UVC to UVA (365 nm) resulted in significant decrease in the product yields. The pellet form of catalyst has been found to be attractive for use in further research on photocatalytic reduction of CO2.


Language eng
Field of Research 090703 Environmental Technologies
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30003597

Document type: Journal Article
Collection: School of Engineering and Information Technology
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