NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel
© 2018 Elsevier B.V. NiAl 2 O 4 spinel-type catalyst was successfully prepared by an incipient wetness impregnation method accompanied with high-temperature calcination at 1273 K for 10 h. The effect of reduction temperatures (773, 923, and 1073 K) on the catalytic activity for palm oil deoxygenati...
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th-mahidol.454212019-08-23T18:11:45Z NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel Atthapon Srifa Rungnapa Kaewmeesri Cheng Fang Vorranutch Itthibenchapong Kajornsak Faungnawakij Mahidol University King Mongkut s University of Technology Thonburi Thailand National Science and Technology Development Agency Chemical Engineering Chemistry Engineering Environmental Science © 2018 Elsevier B.V. NiAl 2 O 4 spinel-type catalyst was successfully prepared by an incipient wetness impregnation method accompanied with high-temperature calcination at 1273 K for 10 h. The effect of reduction temperatures (773, 923, and 1073 K) on the catalytic activity for palm oil deoxygenations to green diesel was investigated at 573 K and 5 MPa in a trickle bed reactor. The XRD and XANES analyses confirmed the formation of metallic Ni after pre-reduction, which exhibited a variation of reduction degree at different temperatures. The TEM analysis revealed the formation of large particle size of the catalysts reduced at higher temperature. The highest product yield (94.3%) was achieved for the NiAl 2 O 4 reduced at 923 K. Interestingly, the spinel-type catalyst was highly stable for 24 h on-stream, while the fast degradation was found over a reference catalyst, Ni supported on γ-Al 2 O 3 . The decarbonylation and/or decarboxylation (DCO/DCO 2 ) reactions were dominant over the hydrodeoxygenation (HDO) pathway over all the catalysts. The high performance of NiAl 2 O 4 spinel-type catalyst could be attributed to the characteristic feature of the well-dispersed metallic Ni species with highly stable spinel structure. 2019-08-23T10:45:04Z 2019-08-23T10:45:04Z 2018-08-01 Article Chemical Engineering Journal. (2018), 107-113 10.1016/j.cej.2018.03.118 13858947 2-s2.0-85054001841 https://repository.li.mahidol.ac.th/handle/123456789/45421 Mahidol University SCOPUS https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85054001841&origin=inward |
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Chemical Engineering Chemistry Engineering Environmental Science Atthapon Srifa Rungnapa Kaewmeesri Cheng Fang Vorranutch Itthibenchapong Kajornsak Faungnawakij NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
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© 2018 Elsevier B.V. NiAl 2 O 4 spinel-type catalyst was successfully prepared by an incipient wetness impregnation method accompanied with high-temperature calcination at 1273 K for 10 h. The effect of reduction temperatures (773, 923, and 1073 K) on the catalytic activity for palm oil deoxygenations to green diesel was investigated at 573 K and 5 MPa in a trickle bed reactor. The XRD and XANES analyses confirmed the formation of metallic Ni after pre-reduction, which exhibited a variation of reduction degree at different temperatures. The TEM analysis revealed the formation of large particle size of the catalysts reduced at higher temperature. The highest product yield (94.3%) was achieved for the NiAl 2 O 4 reduced at 923 K. Interestingly, the spinel-type catalyst was highly stable for 24 h on-stream, while the fast degradation was found over a reference catalyst, Ni supported on γ-Al 2 O 3 . The decarbonylation and/or decarboxylation (DCO/DCO 2 ) reactions were dominant over the hydrodeoxygenation (HDO) pathway over all the catalysts. The high performance of NiAl 2 O 4 spinel-type catalyst could be attributed to the characteristic feature of the well-dispersed metallic Ni species with highly stable spinel structure. |
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Mahidol University |
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Mahidol University Atthapon Srifa Rungnapa Kaewmeesri Cheng Fang Vorranutch Itthibenchapong Kajornsak Faungnawakij |
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Article |
author |
Atthapon Srifa Rungnapa Kaewmeesri Cheng Fang Vorranutch Itthibenchapong Kajornsak Faungnawakij |
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Atthapon Srifa |
title |
NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
title_short |
NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
title_full |
NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
title_fullStr |
NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
title_full_unstemmed |
NiAl <inf>2</inf> O <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
title_sort |
nial <inf>2</inf> o <inf>4</inf> spinel-type catalysts for deoxygenation of palm oil to green diesel |
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2019 |
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https://repository.li.mahidol.ac.th/handle/123456789/45421 |
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1763497822877908992 |