Synthesis of Ordered Mesoporous Ru-MgZr Composite Oxide Catalysts for Isomerization of Linoleic Acid

doi:10.11944/j.issn.1000-0518.2018.11.170412

Chinese Journal of Applied Chemistry ›› 2018, Vol. 35 ›› Issue (11): 1342-1350.DOI: 10.11944/j.issn.1000-0518.2018.11.170412

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Synthesis of Ordered Mesoporous Ru-MgZr Composite Oxide Catalysts for Isomerization of Linoleic Acid

CHEN Jiebo^a^*(),XIE Weijie^b,WANG Lu^a,WANG Yiming^b,LEI Yufeng^b,WEI Yali^b

^aNational Engineering Research Center for Sugarcane
^bCollege of Life Sciences,Fujian Agriculture and Forestry University,Fuzhou 350002,China

Received:2017-11-15 Accepted:2018-02-06 Published:2018-10-31 Online:2018-10-31
Contact: CHEN Jiebo
Supported by:
Supported by the National Natural Science Foundation of China(No.81673542), the Opening Foundation of National Engineering Research Center for Sugarcane(No.KJG16005E, No.PTJH1500113)

Abstract

Abstract:

The preparation of highly efficient and selective catalyst is important for the isomerization of linoleic acid. Herein, ordered mesoporous Ru-MgO-ZrO₂ solid base catalysts were synthesized through the evaporation-induced self-assembly sol-gel method. The effects of the basicity, pore size and specific surface area of the catalyst were investigated. The effect of catalysts surface basicity, Ru doping and its effect on catalysis activity were also investigated. The results show that the Ru-MgO-ZrO₂ catalyst with n(Zr)∶n(Mg)=3∶1 has good order and high specific surface area. The strong base sites and lattice Ru of catalyst are the two active sites of catalytic reaction. The Ru-MgO-ZrO₂ catalyst with n(Zr)∶n(Mg)=1∶1 catalyst leads to the highest 85% yield of conjugated linoleic acid(CLA) in 4 hour reaction time and the productivity of CLA is 0.099 g(CLA)·L^-1(solvent)·min^-1. Furthermore, the products are mainly three kinds of isomers with biological activity. These solid base oxide catalysts with the advantages of high catalytic efficiency, simple preparation and high selectivity toward biological activity of linoleic acid products show application prospect.

Key words: ordered mesoporous, isomerization, conjugated linoleic acid

CHEN Jiebo,XIE Weijie,WANG Lu,WANG Yiming,LEI Yufeng,WEI Yali. Synthesis of Ordered Mesoporous Ru-MgZr Composite Oxide Catalysts for Isomerization of Linoleic Acid[J]. Chinese Journal of Applied Chemistry, 2018, 35(11): 1342-1350.

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Synthesis of Ordered Mesoporous Ru-MgZr Composite Oxide Catalysts for Isomerization of Linoleic Acid

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