Renewable Schiff-Base Ionic Liquids for Lignocellulosic Biomass Pretreatment

Hemant Choudhary; Venkataramana R. Pidatala; Mood Mohan; Blake A. Simmons; John M. Gladden; Seema Singh

doi:10.3390/molecules27196278

Renewable Schiff-Base Ionic Liquids for Lignocellulosic Biomass Pretreatment

Hemant Choudhary, Venkataramana R. Pidatala, Mood Mohan, Blake A. Simmons, John M. Gladden, Seema Singh

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Growing interest in sustainable sources of chemicals and energy from renewable and reliable sources has stimulated the design and synthesis of renewable Schiff-base (iminium) ionic liquids (ILs) to replace fossil-derived ILs. In this study, we report on the synthesis of three unique iminium-acetate ILs from lignin-derived aldehyde for a sustainable “future” lignocellulosic biorefinery. The synthesized ILs contained only imines or imines along with amines in their structure; the ILs with only imines group exhibited better pretreatment efficacy, achieving >89% sugar release. Various analytical and computational tools were employed to understand the pretreatment efficacy of these ILs. This is the first study to demonstrate the ease of synthesis of these renewable ILs, and therefore, opens the door for a new class of “Schiff-base ILs” for further investigation that could also be designed to be task specific.

Original language	English
Article number	6278
Journal	Molecules
Volume	27
Issue number	19
DOIs	https://doi.org/10.3390/molecules27196278
State	Published - Oct 2022
Externally published	Yes

Funding

This work was part of the DOE Joint BioEnergy Institute (http://www.jbei.org) supported by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, through contract DE-AC02-05CH11231 between Lawrence Berkeley National Laboratory and the U.S. Department of Energy. The United States Government and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Funders	Funder number
United States Government
U.S. Department of Energy
Office of Science
Biological and Environmental Research	DE-AC02-05CH11231
Lawrence Berkeley National Laboratory

Keywords

biofuel
biorefinery
ethylene diamine
ionic liquids
lignin
lignocellulose
vanillin

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/molecules27196278

Cite this

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title = "Renewable Schiff-Base Ionic Liquids for Lignocellulosic Biomass Pretreatment",

abstract = "Growing interest in sustainable sources of chemicals and energy from renewable and reliable sources has stimulated the design and synthesis of renewable Schiff-base (iminium) ionic liquids (ILs) to replace fossil-derived ILs. In this study, we report on the synthesis of three unique iminium-acetate ILs from lignin-derived aldehyde for a sustainable “future” lignocellulosic biorefinery. The synthesized ILs contained only imines or imines along with amines in their structure; the ILs with only imines group exhibited better pretreatment efficacy, achieving >89% sugar release. Various analytical and computational tools were employed to understand the pretreatment efficacy of these ILs. This is the first study to demonstrate the ease of synthesis of these renewable ILs, and therefore, opens the door for a new class of “Schiff-base ILs” for further investigation that could also be designed to be task specific.",

keywords = "biofuel, biorefinery, ethylene diamine, ionic liquids, lignin, lignocellulose, vanillin",

author = "Hemant Choudhary and Pidatala, {Venkataramana R.} and Mood Mohan and Simmons, {Blake A.} and Gladden, {John M.} and Seema Singh",

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AU - Choudhary, Hemant

AU - Pidatala, Venkataramana R.

AU - Mohan, Mood

AU - Simmons, Blake A.

AU - Gladden, John M.

AU - Singh, Seema

PY - 2022/10

Y1 - 2022/10

N2 - Growing interest in sustainable sources of chemicals and energy from renewable and reliable sources has stimulated the design and synthesis of renewable Schiff-base (iminium) ionic liquids (ILs) to replace fossil-derived ILs. In this study, we report on the synthesis of three unique iminium-acetate ILs from lignin-derived aldehyde for a sustainable “future” lignocellulosic biorefinery. The synthesized ILs contained only imines or imines along with amines in their structure; the ILs with only imines group exhibited better pretreatment efficacy, achieving >89% sugar release. Various analytical and computational tools were employed to understand the pretreatment efficacy of these ILs. This is the first study to demonstrate the ease of synthesis of these renewable ILs, and therefore, opens the door for a new class of “Schiff-base ILs” for further investigation that could also be designed to be task specific.

AB - Growing interest in sustainable sources of chemicals and energy from renewable and reliable sources has stimulated the design and synthesis of renewable Schiff-base (iminium) ionic liquids (ILs) to replace fossil-derived ILs. In this study, we report on the synthesis of three unique iminium-acetate ILs from lignin-derived aldehyde for a sustainable “future” lignocellulosic biorefinery. The synthesized ILs contained only imines or imines along with amines in their structure; the ILs with only imines group exhibited better pretreatment efficacy, achieving >89% sugar release. Various analytical and computational tools were employed to understand the pretreatment efficacy of these ILs. This is the first study to demonstrate the ease of synthesis of these renewable ILs, and therefore, opens the door for a new class of “Schiff-base ILs” for further investigation that could also be designed to be task specific.

KW - biofuel

KW - biorefinery

KW - ethylene diamine

KW - ionic liquids

KW - lignin

KW - lignocellulose

KW - vanillin

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ER -

Renewable Schiff-Base Ionic Liquids for Lignocellulosic Biomass Pretreatment

Abstract

Funding

Keywords

UN SDGs

Access to Document

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