Direct conversion of xylan into alkyl pentosides

Bouxin, Florent P.; Marinković, Siniša; Bras, Jean Le; Estrine, Boris

doi:10.1016/j.carres.2010.09.003

Cited by 52 publications

(43 citation statements)

References 20 publications

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“…Surfactants are usually produced from petrochemical feedstocks such as benzene, however environmentally friendly surfactants have recently been produced from renewable raw materials such as fatty alcohols from vegetable oils and D-glucose from starch [128].…”

Section: A8 Petrochemical Industrymentioning

confidence: 99%

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Garciá‐Olivares

2015

Energies

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Abstract:A feasible way to avoid the risk of energy decline and combat climate change is to build a 100% renewable global energy mix. However, a globally electrified economy cannot grow much above 12 electric terawatts without putting pressure on the limits of finite mineral reserves. Here we analyze whether 12 TW of electricity and 1 TW of biomass (final) power will be able to fuel a future post-carbon economy that can provide similar services to those of a contemporary economy. Contrarily to some pessimistic expectations, this analysis shows that the principle economic processes can be replaced with sustainable alternatives based on electricity, charcoal, biogas and hydrogen. Furthermore, those services that cannot be replaced are not as crucial so as to cause a return to a pre-industrial society. Even so, land transport and aviation are at the limit of what is sustainable, outdoor work should be reorganized, metal primary production should be based on hydrogen reduction when possible, mineral production should be increasingly based on recycling, the petrochemical industry should shrink to a size of 40%-43% of the 2012 petrochemical sector, i.e., a size similar to that the sector had in [1985][1986], and agriculture may require organic farming methods to be sustainable.

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Section: A8 Petrochemical Industrymentioning

confidence: 99%

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Garciá‐Olivares

2015

Energies

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“…Octyl, decyl and dodecyl D-xylosides and polyxylosides were synthesized as described in the literature [12]. Starting alkylpolyxylosides are mixtures of mono and polyglycosides with a and b anomeric forms.…”

Section: Generalmentioning

confidence: 99%

“…Their polymerization degree (DP) is controlled to be as low as possible (value are 1.1 or 1.2) during glycosylation by the use of a large excess of alcohol. Alkyl monoxylosides were obtained separately by purifying corresponding alkyl-polyxylosides on column chromatography [12]. They were used as gas chromatography standards for the calculation of the DP of alkyl polyxylosides [18].…”

Section: Generalmentioning

confidence: 99%

“…D-Xylosides surfactants produced from agricultural wastes or hardwoods are gaining interest in the surfactant market for detergent and cosmetic applications as they display high detergent properties and a better ecological profile [10]. Indeed their manufacture by a direct transglycosylation of xylan or wheat bran hemicelluloses has been described recently [12,13]. New wetting agents based on these surfactants have also been described for paper impregnation in the wood-based industry, a high tonnage market application [14].…”

Section: Introductionmentioning

confidence: 98%

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Synthesis and Surface Properties of Succinic Acid End‐Capped Alkyl‐Polyxylosides

Renault¹,

Portella

Marinković³

et al. 2011

J Surfact & Detergents

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Synthesis and surfactant properties and biodegradation of succinylated alkyl polyxylosides is described for the first time. The esterification of succinic anhydride with alkyl polyxylosides was achieved without solvent and the substitution degree controlled over a certain range. The surfactant properties were studied as a function of substitution degree. Their biodegradation was studied following OECD guidelines. The results have confirmed that the new synthetic approach described in this paper is a potentially economical and efficient method for the preparation of a new range of environmental friendly surfactants.

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“…They have been applied in the production of bioethanol, xylitol and xylo-oligosaccharides [3,6,10,11], as well as in films with low oxygen permeability [12][13][14], composites [15,16], hydrogels [17], surfactants [18], as pa ⁎ ⁎ Corresponding author.…”

Section: Introductionmentioning

confidence: 99%

Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

Sousa

Pedrosa

Ramos

et al. 2016

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Xylan (the most common hemicellulose in wood and annual plants) and xylan derivatives have a very wide field of uses for which physico-chemical surface properties play an important role (e.g. in composites or barrier materials). In the present work, for the first time, inverse gas chromatography (at infinite dilution conditions) was used to assess the surface properties of xylan and xylan derivatives. Firstly, carboxymethyl xylan (CMX) and hydroxypropyl xylan (HPX) have been synthesized from commercial xylan (BX) and the presence of substituent groups confirmed by infrared spectroscopy and 1 H NMR. Then, the modified and original xylans were analysed for their dispersive component of the surface energy (γ s d ) and Lewis acid-base properties. It was found that carboxymethylation and hydroxypropylation decreased significantly the γ s d value of xylan: from 47.6 mJ m −2 in BX to 33.0 mJ m −2 and 23.5 mJ m −2 in CMX and HPX, respectively. As for the Lewis acid-base properties, HPX showed a perfectly amphoteric behaviour while the surfaces of unmodified xylan and CMX showed a prevalence of Lewis acidic character over the Lewis basic character, being, however, the surface of CMX less acidic than that of the original xylan. These results were interpreted in terms of the effect of the presence of the new substituent groups in the xylan backbone.

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Direct conversion of xylan into alkyl pentosides

Cited by 52 publications

References 20 publications

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Substitutability of Electricity and Renewable Materials for Fossil Fuels in a Post-Carbon Economy

Synthesis and Surface Properties of Succinic Acid End‐Capped Alkyl‐Polyxylosides

Surface properties of xylan and xylan derivatives measured by inverse gas chromatography

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