Novel fine-disperse bimetallic Pt-Pd/Al2O3 catalysts for glycerol oxidation with molecular oxygen

International Conference on Functional Materials and Nanotechnologies 2013

材料科学;物理学

Dubencovs, K.^1 ; Chornaja, S.^1 ; Sproge, E.^1 ; Kampars, V.^1 ; Markova, D.^1 ; Kulikova, L.^2 ; Serga, V.^2 ; Cvetkovs, A.^2

Institute of Applied Chemistry, Riga Technical University, Latvia^1

Institute of Inorganic Chemistry, Riga Technical University, Latvia^2

关键词: Alkaline solutions;    Bimetallic catalysts;    Glyceric acid;    Glycerol conversions;    Glycerol oxidation;    Nano powders;    Neutral water;    Pd/Al2O3 catalyst;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/49/1/012002/pdf
DOI  :  10.1088/1757-899X/49/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Using extractive-pyrolytic method several Pt-Pd bimetallic catalysts supported on plasma-processed alumina nanopowder were synthesized. Pt-Pd loading and glycerol oxidation process parameter influence on catalyst activity and selectivity was determined oxidizing glycerol in mild conditions. Novel bimetallic catalysts in neutral water solutions were practically inactive (glycerol conversion was only 3%) whereas in alkaline solutions they were active and selective to glyceric acid. Using 1.2%Pt-1.2%Pd/Al2O3catalyst glyceric acid was obtained with 65% selectivity (glycerol conversion was 96%). It was shown that novel fine-disperse bimetallic Pt-Pd/Al2O3catalysts were more active compared to analogous monometallic Pt/Al2O3and Pd/Al2O3catalysts.