Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors

The paper investigated the effects of molecular structures on the conversion of the carboxylic acids (formic acid, acetic acid, propionic acid and butyric acid) during the steam reforming reactions. In essence, molecular structures determined catalytic behaviors of the organics during the reforming...

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Main Authors: Li, J., Jia, P., Hu, X., Dong, Dehua, Gao, G., Geng, D., Xiang, J., Wang, Y., Hu, S.
Format: Journal Article
Published: 2018
Online Access:http://hdl.handle.net/20.500.11937/68145
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author Li, J.
Jia, P.
Hu, X.
Dong, Dehua
Gao, G.
Geng, D.
Xiang, J.
Wang, Y.
Hu, S.
author_facet Li, J.
Jia, P.
Hu, X.
Dong, Dehua
Gao, G.
Geng, D.
Xiang, J.
Wang, Y.
Hu, S.
author_sort Li, J.
building Curtin Institutional Repository
collection Online Access
description The paper investigated the effects of molecular structures on the conversion of the carboxylic acids (formic acid, acetic acid, propionic acid and butyric acid) during the steam reforming reactions. In essence, molecular structures determined catalytic behaviors of the organics during the reforming reactions. The acids with a C–C bond were more stable than formic acid during the homogenous decomposition reactions. However, the steam reforming of formic acid was much easier than that of the heavier acids due to the absence of cracking of the C–C bond during reforming. The difficulty for reforming of the carboxylic acids increased with the increase of the length of the aliphatic carbon chain (from acetic acid to butyric acid). The carboxylic acids with a longer aliphatic carbon chain (propionic acid and butyric acid) also had a higher tendency towards coking than acetic acid and formic acid. The coke formed in steam reforming of formic acid was the lowest compared with other acids. The C–C bond and the number of C–C bond in the carboxylic acids affected the reactivity of the carboxylic acids, their tendencies towards the formation of coke and the properties of the coke. The coke had larger aromatic ring systems and oxygen–containing functionalities during steam reforming of acetic acid. The amorphous coke formed in reforming of acetic acid, while the fibrous coke formed during the reforming of the heavier carboxylic acids.
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institution Curtin University Malaysia
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publishDate 2018
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spelling curtin-20.500.11937-681452018-12-03T06:31:48Z Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors Li, J. Jia, P. Hu, X. Dong, Dehua Gao, G. Geng, D. Xiang, J. Wang, Y. Hu, S. The paper investigated the effects of molecular structures on the conversion of the carboxylic acids (formic acid, acetic acid, propionic acid and butyric acid) during the steam reforming reactions. In essence, molecular structures determined catalytic behaviors of the organics during the reforming reactions. The acids with a C–C bond were more stable than formic acid during the homogenous decomposition reactions. However, the steam reforming of formic acid was much easier than that of the heavier acids due to the absence of cracking of the C–C bond during reforming. The difficulty for reforming of the carboxylic acids increased with the increase of the length of the aliphatic carbon chain (from acetic acid to butyric acid). The carboxylic acids with a longer aliphatic carbon chain (propionic acid and butyric acid) also had a higher tendency towards coking than acetic acid and formic acid. The coke formed in steam reforming of formic acid was the lowest compared with other acids. The C–C bond and the number of C–C bond in the carboxylic acids affected the reactivity of the carboxylic acids, their tendencies towards the formation of coke and the properties of the coke. The coke had larger aromatic ring systems and oxygen–containing functionalities during steam reforming of acetic acid. The amorphous coke formed in reforming of acetic acid, while the fibrous coke formed during the reforming of the heavier carboxylic acids. 2018 Journal Article http://hdl.handle.net/20.500.11937/68145 10.1016/j.mcat.2018.02.027 restricted
spellingShingle Li, J.
Jia, P.
Hu, X.
Dong, Dehua
Gao, G.
Geng, D.
Xiang, J.
Wang, Y.
Hu, S.
Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title_full Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title_fullStr Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title_full_unstemmed Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title_short Steam reforming of carboxylic acids for hydrogen generation: Effects of aliphatic chain of the acids on their reaction behaviors
title_sort steam reforming of carboxylic acids for hydrogen generation: effects of aliphatic chain of the acids on their reaction behaviors
url http://hdl.handle.net/20.500.11937/68145