Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor
Photocatalytic CO2 reduction with H2 as a reductant over gold (Au)-doped TiO2 nanocatalysts in a continuous monolith photoreactor has been investigated. The nanocatalysts were characterized by XRD, SEM, N2 adsorption-desorption and UV-Visible spectroscopy. Crystalline nanoparticles of anatase phase...
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| Format: | Article |
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Italian Association of Chemical Engineering - AIDIC
2015
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| _version_ | 1796860420960550912 |
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| author | Tahir, Beenish Tahir, Muhammad Amin, Nor A. S. |
| author_facet | Tahir, Beenish Tahir, Muhammad Amin, Nor A. S. |
| author_sort | Tahir, Beenish |
| collection | ePrints |
| description | Photocatalytic CO2 reduction with H2 as a reductant over gold (Au)-doped TiO2 nanocatalysts in a continuous monolith photoreactor has been investigated. The nanocatalysts were characterized by XRD, SEM, N2 adsorption-desorption and UV-Visible spectroscopy. Crystalline nanoparticles of anatase phase TiO2 were obtained in the Au-doped TiO2 samples. CO was the major product over 0.5 wt. % Au-doped TiO2 with the yield rate of 12,305 ppm g-catal.-1 h-1 , 318 times higher than un-doped TiO2 catalyst. Significantly higher photoactivity of Au-doped TiO2 was obviously due to fast electron transfer with hindered recombination rates and larger illuminated surface area inside the monolith channels. The CO production rate was gradually reduced with increasing the space velocity. The stability of the reused catalysts for CO production sustained at cyclic runs. It is evident Au-doped TiO2 nanocatalyst supported over monolith channels is highly potential for continuous CO2 photoreduction to CO and hydrocarbons. |
| first_indexed | 2024-03-05T19:41:06Z |
| format | Article |
| id | utm.eprints-57996 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-03-05T19:41:06Z |
| publishDate | 2015 |
| publisher | Italian Association of Chemical Engineering - AIDIC |
| record_format | dspace |
| spelling | utm.eprints-579962021-08-24T14:40:31Z http://eprints.utm.my/57996/ Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor Tahir, Beenish Tahir, Muhammad Amin, Nor A. S. TP Chemical technology Photocatalytic CO2 reduction with H2 as a reductant over gold (Au)-doped TiO2 nanocatalysts in a continuous monolith photoreactor has been investigated. The nanocatalysts were characterized by XRD, SEM, N2 adsorption-desorption and UV-Visible spectroscopy. Crystalline nanoparticles of anatase phase TiO2 were obtained in the Au-doped TiO2 samples. CO was the major product over 0.5 wt. % Au-doped TiO2 with the yield rate of 12,305 ppm g-catal.-1 h-1 , 318 times higher than un-doped TiO2 catalyst. Significantly higher photoactivity of Au-doped TiO2 was obviously due to fast electron transfer with hindered recombination rates and larger illuminated surface area inside the monolith channels. The CO production rate was gradually reduced with increasing the space velocity. The stability of the reused catalysts for CO production sustained at cyclic runs. It is evident Au-doped TiO2 nanocatalyst supported over monolith channels is highly potential for continuous CO2 photoreduction to CO and hydrocarbons. Italian Association of Chemical Engineering - AIDIC 2015-10 Article PeerReviewed Tahir, Beenish and Tahir, Muhammad and Amin, Nor A. S. (2015) Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor. Chemical Engineering Transactions, 45 . pp. 259-264. ISSN 2283-9216 http://dx.doi.org/10.3303/CET1545044 DOI:10.3303/CET1545044 |
| spellingShingle | TP Chemical technology Tahir, Beenish Tahir, Muhammad Amin, Nor A. S. Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title | Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title_full | Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title_fullStr | Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title_full_unstemmed | Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title_short | Carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| title_sort | carbon dioxide reduction with hydrogen in a continuous catalytic monolith photoreactor |
| topic | TP Chemical technology |
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