"H2-free" demethoxylation of guaiacol in subcritical water using Pt supported on N-doped carbon catalysts: A cost-effective strategy for biomass upgrading

• 作者: Laura Pastor-Pérez Wei Jin Juan J.Villora-Picó Qiang wang M.Mercedes Pastor-Blas Antonio Sepúlveda-Escribano Tomas R.Reina
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（7）
• 页码范围: 377-385
• 页数: 9页
• 语种: 英文

摘要

"H2-free" HDO is a revolutionary route to circumvent the limitations of H2-fed HDO reactors for biomass upgrading.This work demonstrates the viability of this economically appealing route when an adequate catalyst is implemented.Herein,we have developed a new family of Pt catalysts supported on N-doped activated carbons for the H2-free HDO process of guaiacol.Several N-donors have been used to tune the catalyst's structural and electronic properties.As a general trend,the N-promoted samples are more selective towards oxygen-depleted products.The best performing material,namely Pt/PANI-AC,reached outstanding guaiacol conversion values-ca.75％ at 300 ℃ while displaying reasonable stability for multiple recycling operations.The advanced performance is ascribed to the modified electronic and acid-base properties which favor guaiacol activation and C-O cleavage,as well as the excellent dispersion of the Pt nanoparticles.