02335nas a2200265   4500008004100000022001400041245014000055210006900195260000900264300001100273490000800284520138200292653002101674653002601695653002201721653003201743653002101775100002301796700001801819700002201837700002701859700002701886700002501913856013101938       2020                        eng d  a0016-236100aBifunctional rice husk-derived SiO2-Cu-Al-Mg nanohybrid catalyst for one-pot conversion of biomass-derived furfural to furfuryl acetate0 aBifunctional rice huskderived SiO2CuAlMg nanohybrid catalyst for  cSEP   a1179530 v2753 a<p>Developing one-pot reaction methodologies, which typically require multifunctional catalyst systems, is crucial for sustainable production of bio-derived fuels and chemicals. This work reports one-pot hydrogenation-esterification of furfural to furfuryl acetate using a bifunctional metal-based nanohybrid catalyst, composed of rice husk (RH) derived SiO2, Cu, Al, and Mg species (RHSiO2-Cu-Al-Mg). For comparison, the catalytic efficiency of RHSiO2-Cu and RHSiO2-Cu-Al were tested under similar reaction conditions. Various analytical techniques were used to elucidate the physicochemical, textural, and acid-redox properties of the catalysts. It was found that the RHSiO2-Cu-Al-Mg catalyst contains an optimum amount of acid and redox sites, as illustrated by NH3-TPD and H-2-TPR studies, respectively. Especially, Mg addition played a vital role in tailoring acidity of the RHSiO2-Cu-Al catalyst to promote in-situ esterification of furfuryl alcohol with acetic acid to yield furfuryl acetate. As a result, the RHSiO2-Cu-Al-Mg catalyst exhibited the best performance in one-pot conversion of furfural to furfuryl acetate, outperforming various noble metal/silica based catalysts. This study offers potential opportunities for the rational design of novel, bifunctional heterogeneous catalysts for efficient production of bio-derived fuels and value added chemicals.</p>
10aAcid-redox sites10aBifunctional catalyst10aBio-oil upgrading10aOne-pot furfural conversion10aRice husk silica1 aHashim, Luqman, H.1 aHalilu, Ahmed1 aSudarsanam, Putla1 aUmar, Yahaya, Balarabe1 aBin Johan, Mohd, Rafie1 aBhargava, Suresh, K.  uhttps://library.ncl.res.in/content/bifunctional-rice-husk-derived-sio2-cu-al-mg-nanohybrid-catalyst-one-pot-conversion-biomass