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Chemical and Environmental engineering     
Oxidation reaction network of β-isophorone and reaction mechanism
CHEN Zhi rong, FANG Ting ting, YUAN Shen feng, YIN Hong
College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China
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The reaction network and mechanism of β-IP (β-isophorone) oxidation catalyzed by iron (III) acetylacetonate were systematically studied. A variety of analytic methods such as GC-MS and NMR were used to determine the products' structures and the structures of six dimer byproducts were determined. The single factor experiments' results show that when the oxygen pressure is high, the flow rate of oxygen is big, the concentration of catalyst is small and the temperature is low, the selectivity of main product is high and meanwhile the concentration of byproducts is rather small; when there is not enough oxygen, the concentration of catalyst is large and the temperature is high, the yield of main product is relatively small and dimerization becomes the main side reaction. Since neither α-IP nor KIP would further react under the reaction condition, referring to changes of components' concentration, the oxidation reaction network of β-IP, main reaction mechnism and side reaction mechnism  were proposed, which could provide foundation for selecting the manufacturing conditions, improving the selectivity and further kinetics study.

Published: 22 September 2016
CLC:  TQ 031.7  
Cite this article:

CHEN Zhi rong, FANG Ting ting, YUAN Shen feng, YIN Hong. Oxidation reaction network of β-isophorone and reaction mechanism. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2016, 50(9): 1718-1724.

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