Authors: Guerrero-Torres, A; Jimenez-Gomez, CP; Cecilia, JA; Garcia-Sancho, C; Franco, F; Quirante-Sanchez, JJ; Maireles-Torres, P
Article; Proceedings Paper.
Top. Catal.. vol: 62. page: 1022-5528.
Date: JUN. 2019.
Nickel-based catalysts supported on sepiolite catalysts, with a nickel loading between 1 and 10 wt%, have been synthesized by several synthetic strategies (precipitation-deposition, impregnation and grafting-complexation) and subsequent calcination and reduction. The catalysts were characterized by H-2 thermoprogrammed reduction (H-2-TPR), X-ray diffraction, transmission electron microscopy, N-2 adsorption-desorption at -196 degrees C, NH3 thermoprogrammed desorption (NH3-TPD) and CO chemisorption. FUR hydrogenation in gas-phase revealed that the most active catalyst was the catalyst synthesized by the grafting-complexation method due to its highest metallic surface area and smallest metal crystal size, reaching a FUR yield close to 85% after 5h of time-on-stream (TOS) at 190 degrees C, using a H-2:FUR molar ratio of 11.5 and a WHSV of 1.5h(-1). Furan (F), methylfuran (MF) and furfuryl alcohol (FOL); however, the selectivity towards F and MF tend to decrease with the TOS, while FOL selectivity increases..