A “Fourier Transformed Infrared” Compound Study of Lignin Recovered from a Formic Acid Process

Tazien Rashid; Chong Fai Kait; Thanabalan Murugesan

doi:10.1016/j.proeng.2016.06.547

A “Fourier Transformed Infrared” Compound Study of Lignin Recovered from a Formic Acid Process

Tazien Rashid
, Chong Fai Kait
, Thanabalan Murugesan^*

^*Corresponding author for this work

School of Engineering & Physical Sciences

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

132 Citations (Scopus)

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Abstract

Lignocellulosic biomass is emerging as a renewable source of feedstock for biorefinery and chemical industry. Lignin, one of the three components of lignocellulosic biomass (together with cellulose and hemicellulose) represents about 22% of the total mass of the Earth's biosphere. Formic acid was used to dissolve lignin at various reaction temperatures. Infrared spectroscopy was used to study the influence of temperature on the functional groups of treated lignin. Thermal treatment of lignin with formic acid causes a decrease of OH functional group of lignin and an increase of phenolic hydroxyl groups especially at elevated temperature. Results revealed that formic acid treatment resulted in oxidative cleavage of bonds in the lignin macromolecule, leading to formation of oligomers of lignin.

Original language	English
Pages (from-to)	1312-1319
Number of pages	8
Journal	Procedia Engineering
Volume	148
DOIs	https://doi.org/10.1016/j.proeng.2016.06.547
Publication status	Published - 12 Jul 2016
Event	4th International Conference on Process Engineering and Advanced Materials 2016 - Kuala Lumpur, Malaysia Duration: 15 Aug 2016 → 17 Aug 2016

Keywords

Kraft Lignin
FTIR
Functional group
Hydrogen bonding

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Cite this

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title = "A “Fourier Transformed Infrared” Compound Study of Lignin Recovered from a Formic Acid Process",

abstract = "Lignocellulosic biomass is emerging as a renewable source of feedstock for biorefinery and chemical industry. Lignin, one of the three components of lignocellulosic biomass (together with cellulose and hemicellulose) represents about 22\% of the total mass of the Earth's biosphere. Formic acid was used to dissolve lignin at various reaction temperatures. Infrared spectroscopy was used to study the influence of temperature on the functional groups of treated lignin. Thermal treatment of lignin with formic acid causes a decrease of OH functional group of lignin and an increase of phenolic hydroxyl groups especially at elevated temperature. Results revealed that formic acid treatment resulted in oxidative cleavage of bonds in the lignin macromolecule, leading to formation of oligomers of lignin.",

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N2 - Lignocellulosic biomass is emerging as a renewable source of feedstock for biorefinery and chemical industry. Lignin, one of the three components of lignocellulosic biomass (together with cellulose and hemicellulose) represents about 22% of the total mass of the Earth's biosphere. Formic acid was used to dissolve lignin at various reaction temperatures. Infrared spectroscopy was used to study the influence of temperature on the functional groups of treated lignin. Thermal treatment of lignin with formic acid causes a decrease of OH functional group of lignin and an increase of phenolic hydroxyl groups especially at elevated temperature. Results revealed that formic acid treatment resulted in oxidative cleavage of bonds in the lignin macromolecule, leading to formation of oligomers of lignin.

AB - Lignocellulosic biomass is emerging as a renewable source of feedstock for biorefinery and chemical industry. Lignin, one of the three components of lignocellulosic biomass (together with cellulose and hemicellulose) represents about 22% of the total mass of the Earth's biosphere. Formic acid was used to dissolve lignin at various reaction temperatures. Infrared spectroscopy was used to study the influence of temperature on the functional groups of treated lignin. Thermal treatment of lignin with formic acid causes a decrease of OH functional group of lignin and an increase of phenolic hydroxyl groups especially at elevated temperature. Results revealed that formic acid treatment resulted in oxidative cleavage of bonds in the lignin macromolecule, leading to formation of oligomers of lignin.

KW - Kraft Lignin

KW - FTIR

KW - Functional group

KW - Hydrogen bonding

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A “Fourier Transformed Infrared” Compound Study of Lignin Recovered from a Formic Acid Process

Abstract

Keywords

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