Putra, Robertus Dhimas Dhewangga Wijaya, Yanuar Philip Smith, Kevin J. Trajano, Heather L. Kim, Chang Soo 2024-01-12T03:00:19Z 2024-01-12T03:00:19Z 2022-06-21 2022-09 0016-2361 https://pubs.kist.re.kr/handle/201004/76624 A novel approach to Fast Pyrolysis Oil (FPO) upgrading with hydrogen from glycerol aqueous phase reforming (APR) was conducted in a biphasic solution. FPO contains both monomer and polymer compounds which rich in oxygen, giving high acidity and low stability. Hydrogen demanding reaction of depolymerization and hydrodeoxygenation (HDO), often called upgrading, is required to improve FPO properties by converting these compounds to hydrocarbon monomers. APR reaction of glycerol where glycerol is reacted with water to produce hydrogen is one of the renewable choices to obtain hydrogen. Prior to upgrading of FPO, catalyst screening and reaction optimization were studied using phenol as a model compound. Upgrading of FPO with in situ glycerol APR was conducted with Pt/C, facilitating hydrogen production (APR) and utilization (hydrogenation), and HZSM-5, facilitating dehydration reaction. n-Decane was added to the reaction as a co-solvent to prevent the condensation of the non-polar fragments of FPO which led to coke formation. Upon upgrading the weight average molecular weight (Mw), polydispersity index (PDI), and oxygen to carbon (O/C) ratio of FPO decreased. The highest hydrocarbon yield (7.7% FPO basis or 34.6% lignin basis) was obtained by combining Pt/C and HZSM-5 catalysts with n-decane as a co-solvent. Evidence of progressive depolymerization and sequential demethoxylation, hydrogenation, and deoxygenation during upgrading were observed in the products. English Elsevier BV Lignin depolymerization and monomeric evolution during fast pyrolysis oil upgrading with hydrogen from glycerol aqueous phase reforming Article 10.1016/j.fuel.2022.124556 1 Fuel, v.324 Fuel 324 N scie scopus 000809727200002 2-s2.0-85130705050 Energy & Fuels Engineering, Chemical Energy & Fuels Engineering Article BIO-OIL ETHYLENE-GLYCOL PD CATALYSTS BIOMASS NI HYDRODEOXYGENATION CHEMICALS SOLVENT PHENOL ACID Bio-oil upgrading In situ glycerol aqueous phase reforming Hydrodeoxygenation Thermocatalytic upgrading