Revisiting the Brønsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy

Andreas Jonas Kunov-Kruse; Anders Riisager; Saravanamurugan Shunmugavel; Rolf W. Berg; Steffen Buus Kristensen; Rasmus Fehrmann

doi:10.1039/c3gc41174e

Revisiting the Brønsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy

Andreas Jonas Kunov-Kruse, Anders Riisager, Saravanamurugan Shunmugavel, Rolf W. Berg, Steffen Buus Kristensen, Rasmus Fehrmann

Department of Chemistry

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Abstract

A new versatile method to measure rates and determine activation energies for the Brønsted acid catalysed hydrolysis of cellulose and cellobiose (and other polymeric carbohydrates) in ionic liquids is demonstrated by following the C–O stretching band of the glycoside bond with in situ ATR-FTIR. An activation energy in excellent agreement with the literature was determined for cellulose hydrolysis, whereas a distinctly lower activation energy was determined for cellobiose hydrolysis. The methodology also allowed to independently determine activation energies for the formation of 5-hydroxymethylfurfural in the systems

Original language	English
Journal	Green Chemistry
Volume	15
Issue number	10
Pages (from-to)	2843-2848
ISSN	1463-9262
DOIs	https://doi.org/10.1039/c3gc41174e
Publication status	Published - 2013

Keywords

Spectral curve deconvolution
Functional theory dft;
Crystalline polysaccharides
Infrared spectra
Stretching vibrations
Native celluloses
Dehydration
Conversion
Fructose
Glucose

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title = "Revisiting the Br{\o}nsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy",

abstract = "A new versatile method to measure rates and determine activation energies for the Br{\o}nsted acid catalysed hydrolysis of cellulose and cellobiose (and other polymeric carbohydrates) in ionic liquids is demonstrated by following the C–O stretching band of the glycoside bond with in situ ATR-FTIR. An activation energy in excellent agreement with the literature was determined for cellulose hydrolysis, whereas a distinctly lower activation energy was determined for cellobiose hydrolysis. The methodology also allowed to independently determine activation energies for the formation of 5-hydroxymethylfurfural in the systems",

keywords = "Spectral curve deconvolution, Functional theory dft;, Crystalline polysaccharides, Infrared spectra, Stretching vibrations, Native celluloses, Dehydration, Conversion, Fructose, Glucose",

author = "Kunov-Kruse, {Andreas Jonas} and Anders Riisager and Saravanamurugan Shunmugavel and Berg, {Rolf W.} and Kristensen, {Steffen Buus} and Rasmus Fehrmann",

year = "2013",

doi = "10.1039/c3gc41174e",

language = "English",

volume = "15",

pages = "2843--2848 ",

journal = "Green Chemistry",

issn = "1463-9262",

publisher = "Royal Society of Chemistry",

number = "10",

}

Revisiting the Brønsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy. / Kunov-Kruse, Andreas Jonas; Riisager, Anders; Shunmugavel, Saravanamurugan et al.
In: Green Chemistry, Vol. 15, No. 10, 2013, p. 2843-2848 .

Research output: Contribution to journal › Journal article › Research › peer-review

TY - JOUR

T1 - Revisiting the Brønsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy

AU - Kunov-Kruse, Andreas Jonas

AU - Riisager, Anders

AU - Shunmugavel, Saravanamurugan

AU - Berg, Rolf W.

AU - Kristensen, Steffen Buus

AU - Fehrmann, Rasmus

PY - 2013

Y1 - 2013

N2 - A new versatile method to measure rates and determine activation energies for the Brønsted acid catalysed hydrolysis of cellulose and cellobiose (and other polymeric carbohydrates) in ionic liquids is demonstrated by following the C–O stretching band of the glycoside bond with in situ ATR-FTIR. An activation energy in excellent agreement with the literature was determined for cellulose hydrolysis, whereas a distinctly lower activation energy was determined for cellobiose hydrolysis. The methodology also allowed to independently determine activation energies for the formation of 5-hydroxymethylfurfural in the systems

AB - A new versatile method to measure rates and determine activation energies for the Brønsted acid catalysed hydrolysis of cellulose and cellobiose (and other polymeric carbohydrates) in ionic liquids is demonstrated by following the C–O stretching band of the glycoside bond with in situ ATR-FTIR. An activation energy in excellent agreement with the literature was determined for cellulose hydrolysis, whereas a distinctly lower activation energy was determined for cellobiose hydrolysis. The methodology also allowed to independently determine activation energies for the formation of 5-hydroxymethylfurfural in the systems

KW - Spectral curve deconvolution

KW - Functional theory dft;

KW - Crystalline polysaccharides

KW - Infrared spectra

KW - Stretching vibrations

KW - Native celluloses

KW - Dehydration

KW - Conversion

KW - Fructose

KW - Glucose

U2 - 10.1039/c3gc41174e

DO - 10.1039/c3gc41174e

M3 - Journal article

SN - 1463-9262

VL - 15

SP - 2843

EP - 2848

JO - Green Chemistry

JF - Green Chemistry

IS - 10

ER -

Revisiting the Brønsted acid catalysed hydrolysis kinetics of polymeric carbohydrates in ionic liquids by in situ ATR-FTIR spectroscopy

Abstract

Keywords

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