Imperial College London

Dr Jason P. Hallett

Faculty of EngineeringDepartment of Chemical Engineering

Reader in Sustainable Chemical Technology
 
 
 
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Contact

 

+44 (0)20 7594 5388j.hallett Website

 
 
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Location

 

228bBone BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

119 results found

Ballantyne AD, Hallett JP, Riley DJ, Shah N, Payne DJet al., 2018, Lead acid battery recycling for the twenty-first century, ROYAL SOCIETY OPEN SCIENCE, Vol: 5, ISSN: 2054-5703

JOURNAL ARTICLE

Brogan APS, Bui-Le L, Hallett JP, 2018, Non-aqueous homogenous biocatalytic conversion of polysaccharides in ionic liquids using chemically modified glucosidase, NATURE CHEMISTRY, Vol: 10, Pages: 859-865, ISSN: 1755-4330

JOURNAL ARTICLE

Bui M, Adjiman CS, Bardow A, Anthony EJ, Boston A, Brown S, Fennell PS, Fuss S, Galindo A, Hackett LA, Hallett JP, Herzog HJ, Jackson G, Kemper J, Krevor S, Maitland GC, Matuszewski M, Metcalfe IS, Petit C, Puxty G, Reimer J, Reiner DM, Rubin ES, Scott SA, Shah N, Smit B, Trusler JPM, Webley P, Wilcox J, Mac Dowell Net al., 2018, Carbon capture and storage (CCS): the way forward, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 11, Pages: 1062-1176, ISSN: 1754-5692

JOURNAL ARTICLE

Clarke CJ, Tu W-C, Levers O, Brohl A, Hallett JPet al., 2018, Green and Sustainable Solvents in Chemical Processes, CHEMICAL REVIEWS, Vol: 118, Pages: 747-800, ISSN: 0009-2665

JOURNAL ARTICLE

Corbett PJ, McIntosh AJS, Gee M, Hallett JPet al., 2018, Use of ionic liquids to minimize sodium induced internal diesel injector deposits (IDIDs), MOLECULAR SYSTEMS DESIGN & ENGINEERING, Vol: 3, Pages: 397-407, ISSN: 2058-9689

JOURNAL ARTICLE

Corbett PJ, Mclntosh AJS, Gee M, Hallett JPet al., 2018, Use of ionic liquids to remove harmful M2+ contaminants from hydrocarbon streams, MOLECULAR SYSTEMS DESIGN & ENGINEERING, Vol: 3, Pages: 408-417, ISSN: 2058-9689

JOURNAL ARTICLE

Gschwend FJV, Malaret F, Shinde S, Brandt-Talbot A, Hallett JPet al., 2018, Rapid pretreatment of: Miscanthus using the low-cost ionic liquid triethylammonium hydrogen sulfate at elevated temperatures, Green Chemistry, Vol: 20, Pages: 3486-3498, ISSN: 1463-9262

© 2018 The Royal Society of Chemistry. Deconstruction with low-cost ionic liquids (ionoSolv) is a promising method to pre-condition lignocellulosic biomass for the production of renewable fuels, materials and chemicals. This study investigated process intensification strategies for ionoSolv pretreatment of Miscanthus × giganteus with the low-cost ionic liquid triethylammonium hydrogen sulfate ([TEA][HSO4]) in the presence of 20 wt% water, using high temperatures and a high solid to solvent loading of 1:5 g/g. The temperatures investigated were 150, 160, 170 and 180 °C. We discuss the effect of pretreatment temperature on lignin and hemicellulose removal, cellulose degradation and enzymatic saccharification yields. We report that very good fractionation can be achieved across all investigated temperatures, including an enzymatic saccharification yield exceeding 75% of the theoretical maximum after only 15 min of treatment at 180 °C. We further characterised the recovered lignins, which established some tunability of the hydroxyl group content, subunit composition, connectivity and molecular weight distribution in the isolated lignin while maintaining maximum saccharification yield. This drastic reduction of pretreatment time at increased biomass loading without a yield penalty is promising for the development of a commercial ionoSolv pretreatment process.

JOURNAL ARTICLE

Mota-Martinez MT, Brandl P, Hallett JP, Mac Dowell Net al., 2018, Challenges and for the utilisation of ionic liquids as solvents for CO2 capture, MOLECULAR SYSTEMS DESIGN & ENGINEERING, Vol: 3, Pages: 560-571, ISSN: 2058-9689

JOURNAL ARTICLE

Brandt-Talbot A, Gschwend FJV, Fennell PS, Lammens TM, Tan B, Weale J, Hallett JPet al., 2017, An economically viable ionic liquid for the fractionation of lignocellulosic biomass, GREEN CHEMISTRY, Vol: 19, Pages: 3078-3102, ISSN: 1463-9262

JOURNAL ARTICLE

Brogan APS, Hallett JP, 2017, Protein-polymer surfactant nanoconjugates for biocatalysis in anhydrous ionic liquids, 19th IUPAB Congress / 11th EBSA Congress, Publisher: SPRINGER, Pages: S362-S362, ISSN: 0175-7571

CONFERENCE PAPER

Clarke CJ, Tu WC, Weigand L, Brandt A, Hallett JPet al., 2017, Solvation behavior of ionic liquids and their role in the production of lignocellulosic biofuels and sustainable chemical feedstocks, Advanced Green Chemistry: Part 1: Greener Organic Reactions and Processes, Pages: 77-134, ISBN: 9789813228115

BOOK CHAPTER

Daud NMAN, Bakis E, Hallett JP, Weber CC, Welton Tet al., 2017, Evidence for the spontaneous formation of N-heterocyclic carbenes in imidazolium based ionic liquids, CHEMICAL COMMUNICATIONS, Vol: 53, Pages: 11154-11156, ISSN: 1359-7345

JOURNAL ARTICLE

Gschwend FJV, Brandt-Talbot A, Chambon CL, Hallett JPet al., 2017, Ultra-Low Cost Ionic Liquids for the Delignification of Biomass, Editors: Shiflett, Scurto, Publisher: AMER CHEMICAL SOC, Pages: 209-223, ISBN: 978-0-8412-3213-6

BOOK CHAPTER

Mota-Martinez MT, Hallett J, Mac Dowell N, 2017, Screening solvents properties for CO2 capture based on the process performance, 13th International Conference on Greenhouse Gas Control Technologies (GHGT), Publisher: ELSEVIER SCIENCE BV, Pages: 1551-1557, ISSN: 1876-6102

CONFERENCE PAPER

Mota-Martinez MT, Hallett JP, Mac Dowell N, 2017, Solvent selection and design for CO2 capture - how we might have been missing the point, SUSTAINABLE ENERGY & FUELS, Vol: 1, Pages: 2078-2090, ISSN: 2398-4902

JOURNAL ARTICLE

Prado R, Weigand L, Zahari SMSNS, Erdocia X, Hallett JP, Labidi J, Welton Tet al., 2017, An easy and reliable method for syringyl: guaiacyl ratio measurement, TAPPI JOURNAL, Vol: 16, Pages: 145-152, ISSN: 0734-1415

JOURNAL ARTICLE

Prado R, Weigand L, Zahari SMSNS, Erdocia X, Hallett JP, Labidi J, Welton Tet al., 2017, An easy and reliable method for syringyl:guaiacyl ratio measurement, TAPPI JOURNAL, Vol: 16, Pages: 145-152, ISSN: 0734-1415

JOURNAL ARTICLE

Weigand L, Mostame S, Brandt-Talbot A, Welton T, Hallett JPet al., 2017, Effect of pretreatment severity on the cellulose and lignin isolated from Salix using ionoSolv pretreatment, FARADAY DISCUSSIONS, Vol: 202, Pages: 331-349, ISSN: 1359-6640

JOURNAL ARTICLE

Brogans APS, Halleet JP, 2016, Solubilizing and Stabilizing Proteins in Anhydrous Ionic Liquids through Formation of Protein-Polymer Surfactant Nanoconstructs, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 138, Pages: 4494-4501, ISSN: 0002-7863

JOURNAL ARTICLE

De Gregorio GF, Prado R, Vriamont C, Erdocia X, Labidi J, Hallett JP, Welton Tet al., 2016, Oxidative Depolymerization of Lignin Using a Novel Polyoxometalate-Protic Ionic Liquid System, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, Vol: 4, Pages: 6031-6036, ISSN: 2168-0485

JOURNAL ARTICLE

De Gregorio GF, Weber CC, Grasvik J, Welton T, Brandt A, Hallett JPet al., 2016, Mechanistic insights into lignin depolymerisation in acidic ionic liquids, GREEN CHEMISTRY, Vol: 18, Pages: 5456-5465, ISSN: 1463-9262

JOURNAL ARTICLE

Eminov S, Brandt A, Wilton-Ely JDET, Hallett JPet al., 2016, The Highly Selective and Near-Quantitative Conversion of Glucose to 5-Hydroxymethylfurfural Using Ionic Liquids, PLOS ONE, Vol: 11, ISSN: 1932-6203

JOURNAL ARTICLE

Eminov S, Filippousi P, Brandt A, Wilton-Ely JDET, Hallett JPet al., 2016, Direct Catalytic Conversion of Cellulose to 5-Hydroxymethylfurfural Using Ionic Liquids, INORGANICS, Vol: 4, ISSN: 2304-6740

JOURNAL ARTICLE

Giarola S, Romain C, Williams CK, Hallett JP, Shah Net al., 2016, Techno-economic assessment of the production of phthalic anhydride from corn stover, CHEMICAL ENGINEERING RESEARCH & DESIGN, Vol: 107, Pages: 181-194, ISSN: 0263-8762

JOURNAL ARTICLE

Gschwend FJV, Brandt A, Chambon CL, Tu W-C, Weigand L, Hallett JPet al., 2016, Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids, JOVE-JOURNAL OF VISUALIZED EXPERIMENTS, ISSN: 1940-087X

JOURNAL ARTICLE

Kuzmin O, Bordes E, Schmauck J, Hunt PA, Hallett JP, Welton Tet al., 2016, Solubility of alkali metal halides in the ionic liquid [C(4)C(1)im][OTf], PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 18, Pages: 16161-16168, ISSN: 1463-9076

JOURNAL ARTICLE

Kuzmina O, Hallett JP, 2016, Application, Purification, and Recovery of Ionic Liquids, ISBN: 9780444637130

© 2016 Elsevier B.V. All rights reserved. Application, Purification, and Recovery of Ionic Liquids provides a comprehensive overview of the usage of ionic liquids (IL). The book gives a description of the methods used for recovery and purification of ILs, a summary of the economic aspects of using ILs, and a review on the toxicity data of ILs. It is written for researchers, scientists, and engineers working with ILs, their properties, and usages. The book not only describes the chemical aspects, but the economic and environmental aspects as well, making it of particular interest to professionals applying this technology. Chapters written by scientists in academia and researchers in industry, ensuring coverage of both the scientific fundaments and industrial applications. A single source of information for a broad collection of recovery and purification methods. Provides information on using ionic liquids as green solvents. Includes economic aspects of recovery and reuse of ionic liquids.

BOOK

Kuzmina O, Hallett JP, 2016, Introduction, ISBN: 9780444637130

BOOK

Lancefield CS, Rashid GMM, Bouxin F, Wasak A, Tu W-C, Hallett J, Zein S, Rodriguez J, Jackson SD, Westwood NJ, Bugg TDHet al., 2016, Investigation of the Chemocatalytic and Biocatalytic Valorization of a Range of Different Lignin Preparations: The Importance of beta-O-4 Content, ACS SUSTAINABLE CHEMISTRY & ENGINEERING, Vol: 4, Pages: 6921-6930, ISSN: 2168-0485

JOURNAL ARTICLE

Matthews RP, Villar-Garcia IJ, Weber CC, Griffith J, Cameron F, Hallett JP, Hunt PA, Welton Tet al., 2016, A structural investigation of ionic liquid mixtures, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, Vol: 18, Pages: 8608-8624, ISSN: 1463-9076

JOURNAL ARTICLE

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