Enhancement of Bio-based para-Xylene Selectivity in Catalytic Fast Pyrolysis of Cellulose Using a Surface-modified Mg/P/HZSM-5 Catalyst

查看全文 作　　者：WANG [1]Yulan;FAN [1]Minghui;ZHU [1]Lijuan;WANG [1]Shengfei;HE [1]Yuting;LI [1]Quanxin

机构地区：[1]Department of Chemical Physics,CAS Key Laboratory of Urban Pollutant Conversion,Chinese Academy of Sciences,Anhui Key Laboratory of Biomass Clean Energy,University of Science & Technology of China,Hefei 230026,P.R.China

出　　处：《Chemical Research in Chinese Universities》索引2019年第35卷第3期,共8页

摘　　要：With the growing consumption of oil, the production of /?-xylene(PX) from renewable biomass has gained significant attention recently. This work demonstrated that cellulose, a main component in lignocellulosic biomass, was directly converted into PX over the Mg/P surface-modified zeolites. The catalysts modified by the incorporation of P2O5 and MgO into HZSM-5(HZ) promoted the isomerization of zw-/o-xylenes to p-xylene. The PX selectivity was greatly enhanced using the modified zeolites due to the deactivation of external surface and the adjustment of pore entrance. In addition, the addition of methanol to cellulose was beneficial to increase the selectivity of xylenes due to the alkylation reactions and the Diels-Alder reactions between cellulose-derived furans and methanol-derived olefins. The highest PX yield of 10.7%(molar fraction) with a high PX selectivity in xylenes(97.1%) was obtained over the 10%Mg/5%P/HZ catalyst. The reaction pathway for the formation ofp-xylene was addressed according to the study of the key reactions and the characterization of catalysts. 关键词：CELLULOSE P-XYLENE DIELS-ALDER reaction ISOMERIZATION ALKYLATION

相关文献

参考文献（36）
引证文献（4）
耦合文献（1）

参考文献(36)

引证文献(4)

耦合文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Enhancement of Bio-based para-Xylene Selectivity in Catalytic Fast Pyrolysis of Cellulose Using a Surface-modified Mg/P/HZSM-5 Catalyst

参考文献(36)

引证文献(4)

耦合文献(1)

用户提示