Gold catalysts screening in base-free aerobic oxidation of glucose to gluconic acid

被引：46

作者：

Megias-Sayago, C. ^{[1
]}

Ivanova, S.

Lopez-Cartes, C.

Centeno, M. A.

Odriozola, J. A.

机构：

[1] Univ Seville, Dept Quim Inorgan, Avda Amer Vespucio 49, Seville 41092, Spain

来源：

CATALYSIS TODAY | 2017年 / 279卷

关键词：

Glucose oxidation; Gold catalysts; Screening; Gluconic acid; Base free oxidation; SELECTIVE OXIDATION; ASPERGILLUS-NIGER; SOFT ACIDS; NANOPARTICLES; CARBON; FERMENTATION; SENSITIVITY; PALLADIUM; MECHANISM; INSIGHTS;

D O I：

10.1016/j.cattod.2016.06.046

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Base-free aerobic oxidation of glucose in presence of Au/Al2O3, Au/CeO2, Au/CeO2(20 wt%)/Al2O3, Au/CeO2(25 wt%)/ZrO2 and Au/CeO2(50 wt%)/ZrO2 catalysts using molecular oxygen at atmospheric pressure is studied. Within the whole series high conversion and selectivity to gluconic acid are observed after 18 h of reaction at 120 degrees C. The activity and especially the selectivity changes are related to the support nature in a way that the higher the Lewis acidity of the support the lower the selectivity to gluconic acid and the higher the production of lactic acid. The highest yield to gluconic acid is obtained over Au/Al2O3 for which the influence of the reaction time, temperature and stirring rate are further evaluated and discussed. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：148 / 154

页数：7

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