Cited by 1,369Ionic liquids properties and applicationsAdvanced Cellulose Research StudiesCatalysis for Biomass Conversion

Ionic liquid processing of cellulose

Wang, Hui, Gurau, Gabriela, Rogers, Robin D.·2012·Chemical Society Reviews

Abstract

Utilization of natural polymers has attracted increasing attention because of the consumption and over-exploitation of non-renewable resources, such as coal and oil. The development of green processing of cellulose, the most abundant biorenewable material on Earth, is urgent from the viewpoints of both sustainability and environmental protection. The discovery of the dissolution of cellulose in ionic liquids (ILs, salts which melt below 100 °C) provides new opportunities for the processing of this biopolymer, however, many fundamental and practical questions need to be answered in order to determine if this will ultimately be a green or sustainable strategy. In this critical review, the open fundamental questions regarding the interactions of cellulose with both the IL cations and anions in the dissolution process are discussed. Investigations have shown that the interactions between the anion and cellulose play an important role in the solvation of cellulose, however, opinions on the role of the cation are conflicting. Some researchers have concluded that the cations are hydrogen bonding to this biopolymer, while others suggest they are not. Our review of the available data has led us to urge the use of more chemical units of solubility, such as 'g cellulose per mole of IL' or 'mol IL per mol hydroxyl in cellulose' to provide more consistency in data reporting and more insight into the dissolution mechanism. This review will also assess the greenness and sustainability of IL processing of biomass, where it would seem that the choices of cation and anion are critical not only to the science of the dissolution, but to the ultimate 'greenness' of any process (142 references).

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Crossref · 10.1039/c2cs15311d

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  • Ionic liquids with more exotic hydrogen-bond basic anions, such as phosphorthioates or phosphorselenoates, have proven to be less stable than the earlier discoveries.

    “Ionic liquids with more exotic hydrogen-bond basic anions, such as phosphorthioates or phosphorselenoates, have proven to be less stable than the earlier discoveries.80”

    From Deconstruction of lignocellulosic biomass with ionic liquids (2013) · cites this paper as [80]

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Authors
Wang, H., Gurau, G., & Rogers, R. D.
Affiliations
University of Alabama (US)
Corresponding author
Rogers, Robin D.
Venue
Chemical Society Reviews
Published
2012
Volume
41
Issue
4
Pages
1519
ISSN
  • 0306-0012 (ISSN-L)
  • 1460-4744
OpenAlex
W2037719297
Cited by
1,369
References
125
Citations by year
2026: 52 · 2025: 65 · 2024: 87 · 2023: 86 · 2022: 91 · 2021: 97 · 2020: 110 · 2019: 112 · 2018: 119 · 2017: 130 · 2016: 99 · 2015: 116 · 2014: 107 · 2013: 62 · 2012: 34
FWCI
3.89
Type
journal article
Language
en
Open access
closed
Locations
  • Chemical Society Reviews (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Chemical Engineering › Catalysis › Ionic liquids properties and applications
  • Physical Sciences › Materials Science › Biomaterials › Advanced Cellulose Research Studies
  • Physical Sciences › Engineering › Biomedical Engineering › Catalysis for Biomass Conversion
Keywords
ionic liquids, cellulose dissolution, cation-anion interactions, hydrogen bonding, dissolution mechanism, bio-based polymers, cation and anion effects
MeSH terms
Anions, Cations, Cellulose, Viscosity, Biomass, Ionic Liquids, Green Chemistry Technology

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