Tandem hydroalkylation and deoxygenation of lignin-derived phenolics to synthesize high-density fuels  

作　　者：Rui Yu Zhensheng Shen Yanan Liu Chengxiang Shi Juncong Qu Lun Pan Zhenfeng Huang Xiangwen Zhan g Ji-Jun Zou 

机构地区：[1]Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [2]Collaborative Innovative Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China [3]Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第2期104-109,共6页中国化学工程学报（英文版）

基　　金：the support from National Key Research and Development Program of China(2021YFC2104400);the Tianjin Science and Technology Plan Project(21JCQNJC00340);the Haihe Laboratory of Sustainable Chemical Transformations for financial support。

摘　　要：Lignin is the most abundant naturally phenolic biomass,and the synthesis of high-performance renewable fuel from lignin has attracted significant attention.We propose the efficient synthesis of high-density fuels using simulated lignin cracked oil in tandem with hydroalkylation and deoxygenation reactions.First,we investigated the reaction pathway for the hydroalkylation of phenol,which competes with the hydrodeoxygenation form cyclohexane.And then,we investigated the effects of metal catalyst types,the loading amount of metallic,acid dosage,and reactant ratio on the reaction results.The phenol hydroalkylation and hydrodeoxygenation were balanced when 180℃ and 5 MPa H_(2)with the alkanes yield of 95%.By extending the substrate to other lignin-derived phenolics and simulated lignin cracked oil,we obtained the polycyclic alkane fuel with high density of 0.918 g·ml^(-1)and calorific value of41.2 MJ·L^(-1).Besides,the fuel has good low-temperature properties(viscosity of 9.3 mm^(2)·s^(-1)at 20℃ and freezing point below-55℃),which is expected to be used as jet fuel.This work provides a promising way for the easy and green production of high-density fuel directly from real lignin oil.

关 键 词：High-density fuel BIOFUEL Hydrogenation ALKYLATION Lignin Phenolics 

分 类 号：TQ517[化学工程]