Author, as appears in the article.: Guarin, Carlos; Gavila, Llorenc; Constanti, Magda; Medina, Francesc;

Department: Enginyeria Química

URV's Author/s: Constantí Garriga, Magdalena / Medina Cabello, Francisco

Keywords: Microwave Lactic acid Hydrotalcites Cellulose

Abstract: 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.

Thematic Areas: 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

Author's mail: francesc.medina@urv.cat magdalena.constanti@urv.cat

Author identifier: 0000-0002-3111-1542 0000-0002-3547-4199

Last page: 91

Record's date: 2023-02-22

Journal volume: 179

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://www.sciencedirect.com/science/article/pii/S0009250918300149

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Chemical Engineering Science. 179 83-91

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

Article's DOI: 10.1016/j.ces.2018.01.014

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

First page: 83

Publication Type: Journal Publications