High-throughput screening for ionic liquids dissolving (ligno-)cellulose |
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| Authors: | Michael Zavrel Daniela Bross Matthias Funke Jochen Büchs Antje C Spiess |
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| Institution: | 1. Department of Physics, College of Science, Engineering and Technology, University of South Africa, Johannesburg, South Africa;2. Department of Chemical Engineering Technology, University of Johannesburg, Johannesburg, South Africa;3. CAS Key Lab Engineering Plastics, Institue of chemistry, Chinese Academy of Sciences (CAS), Beijing, China;4. Centre for Composite Materials, International Research Centre, Kalasalingam University, Anand Nagar, KrishnanKovil, 626126, India;1. CENIMAT|i3N, Departamento de Ciência dos Materiais, Faculdade de Ciências e Tecnologia, UNL, 2829-516 Caparica, Portugal;2. Área Departamental de Física, Instituto Superior de Engenharia de Lisboa, R. Conselheiro Emídio Navarro, 1, 1950-062, Lisboa, Portugal;1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, China;2. University of Chinese Academy of Sciences, Beijing, 100039, China;3. Shandong Henglian New Materials Co.,Ltd., Weifang, 261061, Shandong, China;1. Dept. of Biobased Materials Science, Kyoto Institute of Technology, Kyoto, 606-8585, Japan;2. Textile Research Institute of Gunma, Kiryu, 376-0011, Japan;3. Institut für Textiltechnik (ITA), RWTH Aachen University, Otto-Blumenthal-Str. 1, Aachen, Germany |
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| Abstract: | The recalcitrance of lignocellulosic biomass poses a major challenge for its sustainable and cost-effective utilization. Therefore, an efficient pretreatment is decisive for processes based on lignocellulose. A green and energy-efficient pretreatment could be the dissolution of lignocellulose in ionic liquids. Several ionic liquids were identified earlier which are capable to dissolve (ligno-)cellulose. However, due to their multitude and high costs, a high-throughput screening on small scale is essential for the determination of the most efficient ionic liquid. In this contribution two high-throughput systems are presented based on extinction or scattered light measurements. Quasi-continuous dissolution profiles allow a direct comparison of up to 96 ionic liquids per experiment in terms of their dissolution kinetics. The screening results indicate that among the ionic liquids tested EMIM Ac is the most efficient for dissolving cellulose. Moreover, it was observed that AMIM Cl is the most effective ionic liquid for dissolving wood chips. |
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