The selective oxidation of n-butanol to butyraldehyde by oxygen using stable Pt-based nanoparticulate catalysts: an efficient route for upgrading aqueous biobutanol

被引：24

作者：

Gandarias, Inaki ^{[1
]}

Nowicka, Ewa ^{[2
]}

May, Blake J. ^{[2
]}

Alghareed, Shaimaa ^{[2
]}

Armstrong, Robert D. ^{[2
]}

Miedziak, Peter J. ^{[2
]}

Taylor, Stuart H. ^{[2
]}

机构：

[1] Univ Basque Country UPV EHU, Dept Chem & Environm Engn, Alameda Urquijo S-N, Bilbao 48013, Spain

[2] Cardiff Univ, Sch Chem, Cardiff Catalysis Inst, Main Bldg,Pk Pl, Cardiff CF10 3AT, S Glam, Wales

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2016年 / 6卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

COMBUSTION METHOD; IONIC DISPERSION; PD; PLATINUM; ALCOHOLS; REDUCTION; CEO2;

D O I：

10.1039/c5cy01726b

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：

Supported Pt nanoparticles are shown to be active and selective towards butyraldehyde in the base-free oxidation of n-butanol by O-2 in an aqueous phase. The formation of butyric acid as a by-product promoted the leaching of Pt and consequently the activity of the catalysts decreased upon reuse. Characterisation showed that the degree to which Pt leached from the catalysts was related to both the metal-support interaction and metal particle size. A catalyst active and stable (<1% metal leaching) in the aqueous reaction medium was obtained when Pt nanoparticles were supported on activated carbon and prepared by a chemical vapour impregnation method. The presence of n-butanol in the aqueous medium is required to inhibit the over oxidation of butyraldehyde to butyric acid. Consequently, high selectivities towards butyraldehyde can only be obtained at intermediate n-butanol conversion.

引用

页码：4201 / 4209

页数：9

共 30 条

[1] Selective oxidation of alcohols to carbonyl compounds and carboxylic acids with platinum group metal catalysts [J].