Efficient microwave-assisted acid hydrolysis of lignocellulosic materials into total reducing sugars in ionic liquids

da Silva Lacerda, Viviane ; López Sotelo, Juan Benito ; Correa Guimaraes, Adriana ; Martín Ramos, Pablo (Universidad de Zaragoza) ; Hernández Navarro, Salvador ; Sánchez Báscones, Mercedes ; Navas Gracia, Luis Manuel ; Pérez Lebeña, Eduardo ; Martín Gil, Jesús

Resumen: Different types of lignocellulosic materials (carnauba leaves, macauba shell and pine nut shell) and native cellulose have been studied for the production of total reducing sugars (TRS) through microwave-assisted acid-catalyzed hydrolysis in ionic liquids (ILs). Four reaction media have been assessed: two deep eutectic solvents (DES), choline chloride-oxalic acid (ChCl/ox) and choline chloride-urea (ChCl/urea), and two conventional ionic liquids, tetraethylammonium chloride (TEAC) and tetraethylammonium bromide (TEAB). Five acids (H2SO4, HCl, HNO3, H3PO4andp-toluensulfonic acid) have been evaluated in varying concentrations (5-30%) and time intervals (0-60 min), at different temperatures (100-140°C). Significant TRS production yields (as high as 83.7% in ChCl/ox for carnauba leaves) have been attained for both DES in combination with HNO3 10%, at 120°C for 30 min, with the additional advantage of low furfural and HMF by-products generation.

Idioma: Inglés

Año: 2016

Publicado en: CELLULOSE CHEMISTRY AND TECHNOLOGY 50, 7-8 (2016), 761-770
ISSN: 0576-9787

Originalmente disponible en: Texto completo de la revista

Factor impacto JCR: 0.763 (2016)

Categ. JCR: MATERIALS SCIENCE, PAPER & WOOD rank: 11 / 21 = 0.524 (2016) - Q3 - T2

Factor impacto SCIMAGO: 0.33 - Organic Chemistry (Q3) - Materials Chemistry (Q3)

Tipo y forma: Article (Published version)

Área (Departamento): Area Ingeniería Agroforestal (Dpto. CC.Agrar.y Medio Natural)