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Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst

Theoretical and experimental approaches were achieved to estimate the presence of mass transfer limitations using Ni/La-co-promoted Al2O3 catalyst for selective reaction from polyethylene terephthalate (PET) plastic waste via steam reforming process. The catalysts were prepared by impregnation metho...

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Main Authors: Nabgan, B., Abdullah, T. A. T., Tahir, M., Nabgan, W., Gambo, Y., Ibrahim, M., Saeh, I., Moghadamian, K.
Format: Article
Published: Elsevier Ltd. 2017
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/80956/
http://dx.doi.org/10.1016/j.jece.2017.05.014
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spelling my.utm.809562019-07-24T03:34:28Z http://eprints.utm.my/id/eprint/80956/ Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst Nabgan, B. Abdullah, T. A. T. Tahir, M. Nabgan, W. Gambo, Y. Ibrahim, M. Saeh, I. Moghadamian, K. TP Chemical technology Theoretical and experimental approaches were achieved to estimate the presence of mass transfer limitations using Ni/La-co-promoted Al2O3 catalyst for selective reaction from polyethylene terephthalate (PET) plastic waste via steam reforming process. The catalysts were prepared by impregnation method and were characterized using, BET, TPD-CO2, TPR-H2, SEM-EDX, TGA and DTA. The internal and external diffusions were indicated in the experimental technique, by changing the catalyst pellet size (dp) and feed flow rate (ml/min). Dimensionless parameters in the theoretical method such as Thiele modules (φ1), effectiveness factor (η), and overall effectiveness factor (Ω) were evaluated. From the experimental results, due to the decreasing of PET-Phenol conversion (from 89 to 76%) at different pellet size, internal mass transfer limitation was indicated. In addition, the theoretical approaches of internal mass transfer limitation was observed in PET-Phenol reaction for all catalyst pellet sizes due to effectiveness factor less than 1 (η ≠ 1). This is shown that experimental results are in complete agreement with the theoretical approach. The presence of external and internal diffusion for all catalytic pellet sizes also confirmed from the overall effectiveness factor evaluation (Ω). Elsevier Ltd. 2017 Article PeerReviewed Nabgan, B. and Abdullah, T. A. T. and Tahir, M. and Nabgan, W. and Gambo, Y. and Ibrahim, M. and Saeh, I. and Moghadamian, K. (2017) Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst. Journal of Environmental Chemical Engineering, 5 (3). pp. 2752-2760. ISSN 2213-3437 http://dx.doi.org/10.1016/j.jece.2017.05.014 DOI:10.1016/j.jece.2017.05.014
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
Nabgan, B.
Abdullah, T. A. T.
Tahir, M.
Nabgan, W.
Gambo, Y.
Ibrahim, M.
Saeh, I.
Moghadamian, K.
Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
description Theoretical and experimental approaches were achieved to estimate the presence of mass transfer limitations using Ni/La-co-promoted Al2O3 catalyst for selective reaction from polyethylene terephthalate (PET) plastic waste via steam reforming process. The catalysts were prepared by impregnation method and were characterized using, BET, TPD-CO2, TPR-H2, SEM-EDX, TGA and DTA. The internal and external diffusions were indicated in the experimental technique, by changing the catalyst pellet size (dp) and feed flow rate (ml/min). Dimensionless parameters in the theoretical method such as Thiele modules (φ1), effectiveness factor (η), and overall effectiveness factor (Ω) were evaluated. From the experimental results, due to the decreasing of PET-Phenol conversion (from 89 to 76%) at different pellet size, internal mass transfer limitation was indicated. In addition, the theoretical approaches of internal mass transfer limitation was observed in PET-Phenol reaction for all catalyst pellet sizes due to effectiveness factor less than 1 (η ≠ 1). This is shown that experimental results are in complete agreement with the theoretical approach. The presence of external and internal diffusion for all catalytic pellet sizes also confirmed from the overall effectiveness factor evaluation (Ω).
format Article
author Nabgan, B.
Abdullah, T. A. T.
Tahir, M.
Nabgan, W.
Gambo, Y.
Ibrahim, M.
Saeh, I.
Moghadamian, K.
author_facet Nabgan, B.
Abdullah, T. A. T.
Tahir, M.
Nabgan, W.
Gambo, Y.
Ibrahim, M.
Saeh, I.
Moghadamian, K.
author_sort Nabgan, B.
title Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
title_short Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
title_full Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
title_fullStr Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
title_full_unstemmed Evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-PET waste to hydrogen production over Ni/La-promoted Al2O3 catalyst
title_sort evaluation of theoretical and experimental mass transfer limitation in steam reforming of phenol-pet waste to hydrogen production over ni/la-promoted al2o3 catalyst
publisher Elsevier Ltd.
publishDate 2017
url http://eprints.utm.my/id/eprint/80956/
http://dx.doi.org/10.1016/j.jece.2017.05.014
_version_ 1643658566696960000
score 13.211869

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