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Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst

Hydrodeoxygenation (HDO) kinetics of phenol over Ag/TiO 2 catalyst was investigated at 415–600 K and 1 atm. The use of oxophilic TiO 2 support has improved phenol conversion due to its preferential activation of CO bond. Product analysis confirmed the occurrence of direct deoxygenation (DDO) and hy...

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Main Authors: Ng, Andrew Kay Lup, Abnisa, Faisal, Daud, Wan Mohd Ashri Wan, Aroua, Mohamed Kheireddine
Format: Article
Published: Wiley 2019
Subjects:
TP Chemical technology
Online Access:http://eprints.um.edu.my/24212/
https://doi.org/10.1002/apj.2293
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spelling my.um.eprints.242122020-04-18T13:32:22Z http://eprints.um.edu.my/24212/ Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst Ng, Andrew Kay Lup Abnisa, Faisal Daud, Wan Mohd Ashri Wan Aroua, Mohamed Kheireddine TP Chemical technology Hydrodeoxygenation (HDO) kinetics of phenol over Ag/TiO 2 catalyst was investigated at 415–600 K and 1 atm. The use of oxophilic TiO 2 support has improved phenol conversion due to its preferential activation of CO bond. Product analysis confirmed the occurrence of direct deoxygenation (DDO) and hydrogenation–dehydration (HYD) pathways to produce benzene and cyclohexane, respectively. Both phenol hydrogenolysis and hydrogenation steps are the respective rate-limiting steps for DDO and HYD pathways of phenol HDO over Ag/TiO 2 . Based on the transition state theory, negative entropy changes of activation during HDO indicated that the HDO reactants formed activated complexes that had more orderly bonding configurations prior to the hydrogenolysis, hydrogenation, and dehydration steps. Under the present conditions, the catalyst was stable after 4 hr of HDO runs and able to be regenerated via H 2 -activation and calcination in air at 553 K with at least 98.9% removal efficiency to remove coke deposits and reform Ag metal species after HDO. © 2019 Curtin University and John Wiley & Sons, Ltd. Wiley 2019 Article PeerReviewed Ng, Andrew Kay Lup and Abnisa, Faisal and Daud, Wan Mohd Ashri Wan and Aroua, Mohamed Kheireddine (2019) Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst. Asia-Pacific Journal of Chemical Engineering, 14 (2). e2293. ISSN 1932-2135 https://doi.org/10.1002/apj.2293 doi:10.1002/apj.2293
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Ng, Andrew Kay Lup
Abnisa, Faisal
Daud, Wan Mohd Ashri Wan
Aroua, Mohamed Kheireddine
Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
description Hydrodeoxygenation (HDO) kinetics of phenol over Ag/TiO 2 catalyst was investigated at 415–600 K and 1 atm. The use of oxophilic TiO 2 support has improved phenol conversion due to its preferential activation of CO bond. Product analysis confirmed the occurrence of direct deoxygenation (DDO) and hydrogenation–dehydration (HYD) pathways to produce benzene and cyclohexane, respectively. Both phenol hydrogenolysis and hydrogenation steps are the respective rate-limiting steps for DDO and HYD pathways of phenol HDO over Ag/TiO 2 . Based on the transition state theory, negative entropy changes of activation during HDO indicated that the HDO reactants formed activated complexes that had more orderly bonding configurations prior to the hydrogenolysis, hydrogenation, and dehydration steps. Under the present conditions, the catalyst was stable after 4 hr of HDO runs and able to be regenerated via H 2 -activation and calcination in air at 553 K with at least 98.9% removal efficiency to remove coke deposits and reform Ag metal species after HDO. © 2019 Curtin University and John Wiley & Sons, Ltd.
format Article
author Ng, Andrew Kay Lup
Abnisa, Faisal
Daud, Wan Mohd Ashri Wan
Aroua, Mohamed Kheireddine
author_facet Ng, Andrew Kay Lup
Abnisa, Faisal
Daud, Wan Mohd Ashri Wan
Aroua, Mohamed Kheireddine
author_sort Ng, Andrew Kay Lup
title Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
title_short Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
title_full Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
title_fullStr Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
title_full_unstemmed Atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using Ag/TiO 2 catalyst
title_sort atmospheric hydrodeoxygenation of phenol as pyrolytic‐oil model compound for hydrocarbon production using ag/tio 2 catalyst
publisher Wiley
publishDate 2019
url http://eprints.um.edu.my/24212/
https://doi.org/10.1002/apj.2293
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score 13.211869

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