Research Data Leeds Repository

Citation

Ries, Michael (2019) Data for Diffusion and Relaxometry to Study Carbohydrates Dissolved in Ionic Liquids. University of Leeds. [Dataset] https://doi.org/10.5518/450

Dataset description

Solutions of xylan and xylose in 1-ethyl-3-methylimidazolium acetate [C2mim] [OAc], a room temperature ionic liquid, were examined across a range of temperatures (20 °C - 70 °C) using: NMR spectroscopy; diffusion; low-field (20 MHz) spin-lattice and spin-spin relaxation times; and rheological measurements through the zero shear rate viscosity. The addition of xylose and xylan affect the mobility of the ions, with a decrease occurring when the carbohydrate concentration is increased. The ratio of the diffusion coefficients for the anion to the cation remained constant upon the addition of both xylan and xylose, showing that the anion and cation were equally affected by the presence of the carbohydrate. The translational diffusion motion of the ions in the xylose solutions were similar in value to published results for cellobiose, which we explain in terms of the number of available carbohydrate OH groups that the ions are interacting with. We observe from the various NMR results that the dissolving mechanism of xylan in [C2mim] [OAc] is similar to that for cellulose.

Subjects:	F000 - Physical sciences > F300 - Physics
Divisions:	Faculty of Engineering and Physical Sciences > School of Physics and Astronomy
Related resources:	Location Type http://eprints.whiterose.ac.uk/141404/ Publication https://doi.org/10.1039/9781788016483-00036 Publication
License:	Creative Commons Attribution 4.0 International (CC BY 4.0)
Date deposited:	15 May 2019 10:55
URI:	https://archive.researchdata.leeds.ac.uk/id/eprint/520
Additional details Additional details Creators or authors: Creators ORCID Other ID Email Primary affiliation Primary affiliation ID Primary affiliation ID type Secondary affiliation Secondary affiliation ID Secondary affiliation ID type Ries, Michael https://orcid.org/0000-0002-8050-3200 University of Leeds https://ror.org/024mrxd33 ror Type of data: Dataset Research funders: Royal Society Grant numbers: IF120090 Publication date: 2019 Resource language: English Metadata language: English Research project title: Diffusion and Relaxometry to Study Carbohydrates Dissolved in Ionic Liquids Publisher: University of Leeds Contact email: m.e.ries@leeds.ac.uk Last Modified: 25 Jul 2024 14:21

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data_of_first_article_of_xylan.xlsx [416kB] data_of_first_article_of_xylan.xlsx [416kB] data_of_first_article_of_xylan.xlsx [416kB] Security: Anyone File name: data_of_first_article_of_xylan.xlsx Content type: Data Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 416kB

data_of_first_article_of_xylose.xlsx [369kB] data_of_first_article_of_xylose.xlsx [369kB] data_of_first_article_of_xylose.xlsx [369kB] Security: Anyone File name: data_of_first_article_of_xylose.xlsx Content type: Data Mime-Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet License: Creative Commons Attribution 4.0 International (CC BY 4.0) File size: 369kB