Au@h-Al2O3 analogic yolk-shell nanocatalyst for highly selective synthesis of biomass-derived d-xylonic acid via regulation of structure effects

被引：32

作者：

Ma, Jiliang ^{[1
]}

Liu, Zewei ^{[1
,2
]}

Song, Junlong ^{[3
]}

Zhong, Linxin ^{[1
]}

Xiao, Dequan ^{[4
]}

Xi, Hongxia ^{[2
]}

Li, Xuehui ^{[2
]}

Sun, Runcang ^{[5
]}

Peng, Xinwen ^{[1
]}

机构：

[1] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510641, Guangdong, Peoples R China

[2] South China Univ Technol, Sch Chem & Chem Engn, Guangzhou 510641, Guangdong, Peoples R China

[3] Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing, Jiangsu, Peoples R China

[4] Univ New Haven, Dept Chem & Chem Engn, Ctr Integrat Mat Discovery, West Haven, CT 06516 USA

[5] Beijing Forestry Univ, Inst Biomass Chem & Utilizat, Beijing, Peoples R China

来源：

GREEN CHEMISTRY | 2018年 / 20卷 / 22期

关键词：

NANOPARTICLES; OXIDATION; CATALYST; GLUCOSE; XYLOSE; CONVERSION; REDUCTION; PATHWAY; PURE;

D O I：

10.1039/c8gc02618a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Selective oxidation of biomass-based monosaccharides into value-added sugar acids is highly desired, but limited success of producing d-xylonic acid has been achieved. Herein, we report an efficient catalyst system, viz., Au nanoparticles anchored on the inner walls of hollow Al2O3 nanospheres (Au@h-Al2O3), which could catalyze the selective oxidation of d-xylose into d-xylonic acid under base-free conditions. The mesoporous Al2O3 shell as the adsorbent first adsorbed d-xylose. Then, the interface of Au nanoparticles and Al2O3 as active sites spontaneously dissociated O-2, and the exposed Au nanoparticle surface as the catalytic site drove the transformation. With this catalyst system, the valuable d-xylonic acid was produced with excellent yields in the aerobic oxidation of d-xylose. Extensive investigation showed that Au@h-Al2O3 is an efficient catalyst with high stability and recyclability.

引用

页码：5188 / 5195

页数：8