Advances on biomass pretreatment using ionic liquids: An overview

Tadesse, Haregewine; Luque, Rafael

doi:10.1039/c0ee00667j

Cited by 399 publications

(261 citation statements)

References 166 publications

(139 reference statements)

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“…[7,8] These main routes for the deconstruction of biomass into platform molecules usually occur in water using various combinations of acids, [9,10] bases, [11] solvents [12][13][14] or ionic liquids. [15,16] All these methods typically produce soluble biomass-derived molecules at fairly low concentrations (<20 g/L) in aqueous or solvent solutions, [7] though some carbohydrate solutions can reach 100-220 g/L using solvent pretreatment and enzymatic hydrolysis [17][18][19] or solvent systems. [13,14] Therefore, biomass-derived platform molecules are often produced in solution at fairly low concentrations.…”

Section: Introductionmentioning

confidence: 99%

Improving Heterogeneous Catalyst Stability for Liquid-phase Biomass Conversion and Reforming

Héroguel

Rozmysłowicz

Luterbacher³

2015

Chimia

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Biomass is a possible renewable alternative to fossil carbon sources. To day, many bio-resources can be converted to direct substitutes or suitable alternatives to fossil-based fuels and chemicals. However, catalyst deactivation under the harsh, often liquid-phase reaction conditions required for biomass treatment is a major obstacle to developing processes that can compete with the petrochemical industry. This review presents recently developed strategies to limit reversible and irreversible catalyst deactivation such as metal sintering and leaching, metal poisoning and support collapse. Methods aiming to increase catalyst lifetime include passivation of low-stability atoms by overcoating, creation of microenvironments hostile to poisons, improvement of metal stability, or reduction of deactivation by process engineering.

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Section: Introductionmentioning

confidence: 99%

Improving Heterogeneous Catalyst Stability for Liquid-phase Biomass Conversion and Reforming

Héroguel

Rozmysłowicz

Luterbacher³

2015

Chimia

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“…Third, the extent and degree of biomass recalcitrance varies as a function of biomass itself (i.e., non-wood (e.g., grass), hardwood, and softwood); other influencing factors include variations in biomass age, harvest method, extent of drying, and storage conditions. For example, the difference and complexity of lignin-carbohydrate bonding make softwoods inaccessible, non-extractable and more recalcitrant to delignification (Tadesse and Luque 2011). In advance studies, pretreatment of the biomass, such as by steam explosion of rice straw (Jiang et al 2011) and autohydrolysis pretreatment of silver birch (Betula pendula) (Hauru et al 2013), improves lignin solubility and thus allows lignin extraction with ILs.…”

Section: Quantification Of Lignin Contentmentioning

confidence: 99%

Effect of Ionic Liquids on Oil Palm Biomass Fiber Dissolution

et al. 2016

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Ionic liquids (ILs) were used in the dissolution of oil palm biomass, primarily empty fruit bunches (EFB), oil palm fronds (OPF), and oil palm trunks (OPT). These ILs acted as alternative solvents that could dissolve biopolymer molecules up to 5 wt.%. The IL, [emim][OAc] was the best solvent, dissolving EFB, OPF, and OPT of 99%, 100%, and 97%, respectively, at 100 ⁰C and 16 h. The lignin content of the regenerated oil palm solids for all biomass was quantified and showed significant reduction up to 35%; fiber length was also reduced as the heating time increased after IL dissolution. Also, the effect of ILs on the different parts of oil palm biomass fibers was thoroughly studied. The lignin content was quantified.

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“…Compared with the above pre-processing methods, ionic liquid (IL) pretreatments have attracted increasing research for the dissolution and subsequent hydrolysis of lignocellulosic biomass. This is due to their desirable properties, such as an environmentally benign nature, low melting point, low volatility and toxicity, and high thermal and chemical stability (Tadesse and Luque 2011). Cellulose samples could be dissolved by many ILs, such as 1-ethyl-3-methylimidazolium acetate ([Emim]Ac), 1-butyl-3-methylimidazolium chloride ([Bmim]Cl), and 1-allyl-3-methylimidazolium chloride ([Amim]Cl).…”

Section: Introductionmentioning

confidence: 99%

“…Using the cellulose in hybrid Pennisetum as a C6 carbon source to produce bio-ethanol would be an effective process for its utilization in China, instead of burning the plant. The hydrolysis of cellulose in the hybrid Pennisetum can be carried out to produce bioethanol (Tadesse and Luque 2011). However, the complex structure and recalcitrance of its plant cell wall makes it difficult to achieve bio-energy conversion efficiently (Jørgensen et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

et al. 2016

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The complex microstructure of lignocellulosic biomass restricts its conversion into bio-ethanol. In this study, the effects of an ionic liquid (IL) 1-allyl-3-methylimidazolium chloride ([Amim]Cl) pretreatment on the microstructure properties and cellulase hydrolysis efficiency of hybrid Pennisetum (P. americanum × P. purpureum, lignocellulosic biomass) were investigated. After the [Amim]Cl pretreatment, the bonds of lignincarbohydrate complex (LCC) and C=O in xylan were destroyed and the content of inter-molecular H-bonds O(6)H…O(3') decreased by 47.2%, while the content of intra-molecular H-bonds of O(2)H…O(6) and O(3)H…O(5) increased by 9.5% and 47.0%, respectively. The crystallinity and the crystallite size decreased by 20.8% and 42.22%, respectively, and the cellulose crystalline structure changed from cellulose crystalline I to cellulose crystalline II. The specific surface area increased from 0.15 to 10.11 m 2 /g after the [Amim]Cl pretreatment. The glucose recovery increased by 10.3 times after being pretreated with [Amim]Cl, compared with the unpretreated sample.

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Advances on biomass pretreatment using ionic liquids: An overview

Cited by 399 publications

References 166 publications

Improving Heterogeneous Catalyst Stability for Liquid-phase Biomass Conversion and Reforming

Improving Heterogeneous Catalyst Stability for Liquid-phase Biomass Conversion and Reforming

Effect of Ionic Liquids on Oil Palm Biomass Fiber Dissolution

Microstructure Properties and Cellulase Hydrolysis Efficiency of Hybrid Pennisetum with [Amim]Cl Pretreatment

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