RT info:eu-repo/semantics/article
T1 Hydrolysis of cellulose in supercritical water: reagent concentration as a selectivity factor
A1 Martínez, Celia M.
A1 Cantero Sposetti, Danilo Alberto
A1 Bermejo Roda, Maria Dolores
A1 Cocero Alonso, María José
AB In this work, the influence of reagent concentration on hydrolysis reactions of cellulose in supercritical water was analyzed. The hydrolysis was carried out at 400 °C and 25 MPa with reaction times between 0.07 and 1.57 s and feeding cellulose concentrations between 5 and 20 % w/w (1.5–6 % w/w at reactor inlet). Also, a flash separator was used to separate vapor in the product stream in order to increase the final concentration. The best result for sugar production (79 % w/w) was obtained working with a cellulose concentration of 5 % w/w and 0.07-s reaction time. For glycolaldehyde production, the best result (42 % w/w) was obtained with a concentration of 20 % w/w and 1.57 s. The employment of a flash separator allowed reducing the water content by 50 %. It was also observed that by increasing the cellulose concentration in the reactor up to 4 % w/w, the hydrolysis took place with a similar kinetic as that in the heterogeneous media, thus reducing the conversion rate of cellulose in supercritical water.
PB Springer
YR 2015
FD 2015
LK http://uvadoc.uva.es/handle/10324/28438
UL http://uvadoc.uva.es/handle/10324/28438
LA eng
NO Cellulose, 2015, Volume 22, Issue 4, pp 2231–2243
NO Producción Científica
DS UVaDOC
RD 23-abr-2024