Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts

Research output: Contribution to conferenceAbstract

Abstract

Pt-Sn supported on Al2O3 was found to be active for the hydrogenation of benzoic acid importantly exhibiting very high selectivity for the hydrogenation of the carboxylic acid functionality in preference to the aromatic ring.1 A DFT study of the adsorption of benzoic acid on a reduced PtSnOx catalyst showed that the adsorption was favoured through the sigma interaction of the COOH group rather than π interaction of the aromatic ring. Interestingly, hydrogenation of derivatives of benzoic acid showed variation both in rate and selectivity compared to that observed for benzoic acid over Pt-Sn catalysts. While no ring hydrogenation was observed for benzoic acid and derivatives trans-cinnamic acid, phenylacetic acid and 4-methoxybenzoic acid, for 4-chlorobenzoic acid and 4-hydroxybenzoic acid ring hydrogenation products were observed.
Original languageEnglish
Publication statusPublished - 27 Aug 2017
Event13th EUROPACAT : European Congress on Catalysis - Florence, Italy
Duration: 27 Aug 201731 Aug 2017
http://www.europacat2017.eu

Conference

Conference13th EUROPACAT
CountryItaly
CityFlorence
Period27/08/201731/08/2017
Internet address

Fingerprint

Benzoic Acid
Carboxylic Acids
Carboxylic acids
Hydrogenation
Catalysts
Derivatives
Adsorption
Discrete Fourier transforms
Acids

Cite this

Manyar, H. (2017). Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts. Abstract from 13th EUROPACAT , Florence, Italy.
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title = "Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts",
abstract = "Pt-Sn supported on Al2O3 was found to be active for the hydrogenation of benzoic acid importantly exhibiting very high selectivity for the hydrogenation of the carboxylic acid functionality in preference to the aromatic ring.1 A DFT study of the adsorption of benzoic acid on a reduced PtSnOx catalyst showed that the adsorption was favoured through the sigma interaction of the COOH group rather than π interaction of the aromatic ring. Interestingly, hydrogenation of derivatives of benzoic acid showed variation both in rate and selectivity compared to that observed for benzoic acid over Pt-Sn catalysts. While no ring hydrogenation was observed for benzoic acid and derivatives trans-cinnamic acid, phenylacetic acid and 4-methoxybenzoic acid, for 4-chlorobenzoic acid and 4-hydroxybenzoic acid ring hydrogenation products were observed.",
author = "Haresh Manyar",
year = "2017",
month = "8",
day = "27",
language = "English",
note = "13th EUROPACAT : European Congress on Catalysis ; Conference date: 27-08-2017 Through 31-08-2017",
url = "http://www.europacat2017.eu",

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Manyar, H 2017, 'Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts', 13th EUROPACAT , Florence, Italy, 27/08/2017 - 31/08/2017.

Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts. / Manyar, Haresh.

2017. Abstract from 13th EUROPACAT , Florence, Italy.

Research output: Contribution to conferenceAbstract

TY - CONF

T1 - Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts

AU - Manyar, Haresh

PY - 2017/8/27

Y1 - 2017/8/27

N2 - Pt-Sn supported on Al2O3 was found to be active for the hydrogenation of benzoic acid importantly exhibiting very high selectivity for the hydrogenation of the carboxylic acid functionality in preference to the aromatic ring.1 A DFT study of the adsorption of benzoic acid on a reduced PtSnOx catalyst showed that the adsorption was favoured through the sigma interaction of the COOH group rather than π interaction of the aromatic ring. Interestingly, hydrogenation of derivatives of benzoic acid showed variation both in rate and selectivity compared to that observed for benzoic acid over Pt-Sn catalysts. While no ring hydrogenation was observed for benzoic acid and derivatives trans-cinnamic acid, phenylacetic acid and 4-methoxybenzoic acid, for 4-chlorobenzoic acid and 4-hydroxybenzoic acid ring hydrogenation products were observed.

AB - Pt-Sn supported on Al2O3 was found to be active for the hydrogenation of benzoic acid importantly exhibiting very high selectivity for the hydrogenation of the carboxylic acid functionality in preference to the aromatic ring.1 A DFT study of the adsorption of benzoic acid on a reduced PtSnOx catalyst showed that the adsorption was favoured through the sigma interaction of the COOH group rather than π interaction of the aromatic ring. Interestingly, hydrogenation of derivatives of benzoic acid showed variation both in rate and selectivity compared to that observed for benzoic acid over Pt-Sn catalysts. While no ring hydrogenation was observed for benzoic acid and derivatives trans-cinnamic acid, phenylacetic acid and 4-methoxybenzoic acid, for 4-chlorobenzoic acid and 4-hydroxybenzoic acid ring hydrogenation products were observed.

M3 - Abstract

ER -

Manyar H. Selective hydrogenation of aromatic carboxylic acids over Pt-Sn catalysts. 2017. Abstract from 13th EUROPACAT , Florence, Italy.