Autor segons l'article: Guarin, Carlos; Gavila, Llorenc; Constanti, Magda; Medina, Francesc;
Departament: Enginyeria Química
Autor/s de la URV: Constantí Garriga, Magdalena / Medina Cabello, Francisco
Paraules clau: Microwave Lactic acid Hydrotalcites Cellulose
Resum: The depletion of oil reserves pushes the development of platform chemicals from biomass, as an alternative for the sustainable progress of the chemical industry. Cellulose, which is the main component of biomass, is widely studied for its conversion into value-added chemicals. However, due to its recalcitrant nature, hydrolysis of cellulose with solid alkali catalysts still remains a challenge. Thus, the conversion of cellulose using hydrotalcites as catalyst was investigated. For this purpose, hydrotalcites were deposited on cellulose fibers and their catalytic behavior was tested at 180 °C, for 1 h, using microwave reactor (300 W). Hydrotalcites proved to efficiently convert cellulose into value-added products such as lactic, acetic, formic and glycolic acids. Catalysts were characterized by X-Ray diffraction, Fourier transform infrared spectroscopy, environmental scanning electron microscopy and BET surface area analysis. The best conversion yield of up to 30% was obtained over calcined hydrotalcites at 400 °C. The basic properties of the hydrotalcite materials have an important effect on the activity. Hence, in this study hydrotalcites are presented as a promising catalyst for cellulose hydrolysis.
Àrees temàtiques: Química Interdisciplinar Industrial and manufacturing engineering Geociências General chemistry General chemical engineering Farmacia Engineering, chemical Engenharias iv Engenharias iii Engenharias ii Engenharias i Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciência de alimentos Chemistry (miscellaneous) Chemistry (all) Chemical engineering (miscellaneous) Chemical engineering (all) Biotecnología Astronomia / física Applied mathematics
ISSN: 00092509
Adreça de correu electrònic de l'autor: magdalena.constanti@urv.cat francesc.medina@urv.cat
Identificador de l'autor: 0000-0002-3547-4199 0000-0002-3111-1542
Pàgina final: 91
Data d'alta del registre: 2024-09-07
Volum de revista: 179
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0009250918300149
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Chemical Engineering Science. 179 83-91
Referència de l'ítem segons les normes APA: Guarin, Carlos; Gavila, Llorenc; Constanti, Magda; Medina, Francesc; (2018). Impact of cellulose treatment with hydrotalcites in hydrothermal catalytic conversion. Chemical Engineering Science, 179(), 83-91. DOI: 10.1016/j.ces.2018.01.014
DOI de l'article: 10.1016/j.ces.2018.01.014
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2018
Pàgina inicial: 83
Tipus de publicació: Journal Publications