Journal of Thermodynamics & Catalysis
Open Access
ISSN: 2157-7544
+44 1300 500008
ISSN: 2157-7544
+44 1300 500008
Shuo Wang
Kaidobata-Nishi 241-438, Shimoshinjo-Nakano, Akita-shi, Akita 010-0195
Japan
Research Article
Cu or Fe Modified Cs2HPMo12O40 as Catalysts for Selective Oxidation of Methacrolein
Author(s): Shuo Wang, Xiaofang Liu and Lilong Zhou
Shuo Wang, Xiaofang Liu and Lilong Zhou
The Cu2+ or Fe3+ substituted Cs2HPMo12O40 was synthesized to study the effect of transitional metal cations on selective catalytic oxidation of methacrolein by polyoxometalates. Adding of Cu2+ could reduce acidity and enhance oxidizing ability of the catalyst. The catalytic experiments showed that the addition small amount of Cu2+ to the catalyst could increase the conversion of methacrolein from 65% to 96% and the selectivity to methacrylic acid to 55%, at 300-340°C. It is found adding of Cu2+ could promote the reduction process of catalysts should be the main reason of the performance enhancement. Adding of Fe3+ to the catalyst could induce some new weak acidic sites due to the formation of iron aqua complexes. Whereas, Fe3+ had no significant effect on redox ability of .. View More»
DOI:
10.4172/2157-7544.1000175