Microwave-Assisted Lignin Solubilization in Protic Ionic Compounds Containing 2,3,4,5-Tetraphenyl-1H-imidazolium and Inorganic Anions

Abstract: The highly efficient solubilization of lignin in designer protic ionic compounds is reported in this work. PPhImCl provided the optimum lignin dissolution capacity and theoretical studies based on DFT calculations further confirmed that the process was energetically favored (∆E = − 13.7 kcal/mol), with strong π–π interactions and hydrogen bonding observed between the PILs and lignin. Graphic Abstract: [Figure not available: see fulltext.]. © 2019, Springer Nature B.V.

Authors
Merino O.1 , Cerón-Camacho R.2 , Luque R. 3, 4 , Martínez-Palou R.1
Journal
Waste and Biomass Valorization
Publisher
Springer
Language
English
Status
Published
Link
External link
DOI
10.1007/S12649-019-00916-2
Year
2019
Organizations
  • 1 Dirección de Investigación en Transformación de Hidrocarburos, Instituto Mexicano del Petróleo, Eje Central L. Cárdenas 152, Mexico City, 07730, Mexico
  • 2 CONACyT-Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas Norte 152, Mexico City, 07730, Mexico
  • 3 Departamento de Química Orgánica, Universidad de Córdoba, Campus Rabanales, Edificio Marie Curie C-3, Cordoba, 14014, Spain
  • 4 Peoples Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya str, Moscow, 117198, Russian Federation
Keywords
Lignin; Microwave; Protic ionic compounds; Solubilization; Theoretical calculation
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