An Efficient Benzaldehyde Oxidation by Hydrogen Peroxide over Metal Substituted Lacunary Potassium Heteropolyacid Salts

被引：29

作者：

da Silva, Marcio Jose ^{[1
]}

de Andrade Leles, Lorena Cristina ^{[1
]}

Natalino, Ricardo ^{[1
]}

Ferreira, Sukarno Olavo ^{[2
]}

Contreras Coronel, Nelson ^{[3
]}

机构：

[1] Univ Fed Vicosa, Dept Chem, Campus Univ,Ave PH Rolfs S-N, BR-36570000 Vicosa, MG, Brazil

[2] Univ Fed Vicosa, Dept Phys, BR-36570000 Vicosa, MG, Brazil

[3] Technol Univ Pereira UTP, Sch Chem Technol, Lab Oleochem, Vereda La Julita 97, Pereira, Colombia

来源：

CATALYSIS LETTERS | 2018年 / 148卷 / 04期

关键词：

Metal substituted heteropolyacid salts; Hydrogen peroxide; Catalytic oxidation; Benzoic acid; CARBOXYLIC-ACIDS; AROMATIC-ALDEHYDES; BENZOIC-ACID; CATALYTIC PERFORMANCE; AEROBIC OXIDATION; PHASE OXIDATION; SOLVENT; POLYOXOMETALATE; SILICA; ANION;

D O I：

10.1007/s10562-018-2326-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Keggin heteropolyacids (i.e. H3PW12O40, H3PMo12O40 and H4SiW12O40) were converted to potassium lacunary salts and afterwards their vacancy were filled by metal cations (i.e. Cu2+, Co2+, Fe3+, Ni2+ or Al3+). These solid catalysts were assessed on oxidation of benzaldehyde to benzoic acid by hydrogen peroxide. Remarkably, among heteropoly salts investigated, the K6SiW11CoO39 was the most active catalyst. High conversion (ca. 90%) and benzoic acid selectivity (ca. 90%) were achieved. The activity of solid catalyst remained unaltered after successive cycles of reuse. Effect of catalyst nature, temperature, reactants concentration on conversion and selectivity were assessed. [GRAPHICS] .

引用

页码：1202 / 1214

页数：13

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