<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Gurrala, L.</style></author><author><style face="normal" font="default" size="100%">Kumar, M. M.</style></author><author><style face="normal" font="default" size="100%">Yerrayya, Attada</style></author><author><style face="normal" font="default" size="100%">Kandasamy, Prabu</style></author><author><style face="normal" font="default" size="100%">Castano, Pedro</style></author><author><style face="normal" font="default" size="100%">Raja, T.</style></author><author><style face="normal" font="default" size="100%">Pilloni, Giovanni</style></author><author><style face="normal" font="default" size="100%">Paek, C.</style></author><author><style face="normal" font="default" size="100%">Vinu, R.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Unraveling the reaction mechanism of selective C9 monomeric phenols formation from lignin using Pd-Al2O3-activated biochar catalyst</style></title><secondary-title><style face="normal" font="default" size="100%">Bioresource Technology</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Hydrogenolysis</style></keyword><keyword><style  face="normal" font="default" size="100%">lignin</style></keyword><keyword><style  face="normal" font="default" size="100%">Mechanism</style></keyword><keyword><style  face="normal" font="default" size="100%">Pd-Al/activated biochar</style></keyword><keyword><style  face="normal" font="default" size="100%">Propanol guaiacol</style></keyword><keyword><style  face="normal" font="default" size="100%">Propyl guaiacol</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2022</style></year><pub-dates><date><style  face="normal" font="default" size="100%">JAN</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">344</style></volume><pages><style face="normal" font="default" size="100%">126204</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">The conversion of biomass-derived lignin to valuable monomeric phenols at high selectivity is of paramount importance for sustainable biorefineries. In this study, a novel Pd-Al2O3 supported on activated biochar catalyst is developed for lignin hydrogenolysis. The catalyst characterization revealed that the (1 1 1) planes of both of Pd-0 and Al2O3 were exposed to the surface. The maximum lignin conversion of 70.4% along with high liquid yield (similar to 57 wt%) was obtained at 240 degrees C, 3 h and 3 MPa H-2 pressure. The total monomeric phenols yield in the liquid was 51.6 wt%, out of which C9 monomeric guaiacols constituted similar to 30.0 wt% with 38.0% selectivity to 4-propyl guaiacol. Using the reaction intermediate, coniferyl alcohol, chemoselective hydrogenation of C-alpha=C-beta is proved to occur over the Pd site, while dehydroxylation of C-gamma-OH is shown to occur over the alumina site. An impressive carbon atom economy of 60% was achieved for the production of monomeric phenols.</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><custom3><style face="normal" font="default" size="100%">Foreign</style></custom3><custom4><style face="normal" font="default" size="100%">9.642</style></custom4></record></records></xml>