A review on catalytic & non-catalytic bio-oil upgrading in supercritical fluids  

作　　者：Sainab Omar Yang Yang Jiawei Wang 

机构地区：[1]Chemical Engineering and Applied Chemistry,Aston University,Birmingham,B47ET,UK

出　　处：《Frontiers of Chemical Science and Engineering》2021年第1期4-17,共14页化学科学与工程前沿（英文版）

摘　　要：This review article summarizes the key published research on the topic of bio-oil upgrading using catalytic and non-catalytic supercritical fluid(SCF)conditions.The precious metal catalysts Pd,Ru and Pt on various supports are frequently chosen for catalytic bio-oil upgrading in SCFs.This is reportedly due to their favourable catalytic activity during the process including hydrotreating,hydrocracking,and esterification,which leads to improvements in liquid yield,heating value,and pH of the upgraded bio-oil.Due to the costs associated with precious metal catalysts,some researchers have opted for non-precious metal catalysts such as acidic HZSM-5 which can promote esterification in supercritical ethanol.On the other hand,SCFs have been effectively used to upgrade crude bio-oil without a catalyst.Supercritical methanol,ethanol,and water are most commonly used and demonstrate catalyst like activities such as facilitating esterification reactions and reducing solid yield by alcoholysis and hydrolysis,respectively.

关 键 词：BIO-OIL UPGRADING SUPERCRITICAL REVIEW 

分 类 号：O64[理学—物理化学]