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Cyclodextrin-multiple metal oxygen cluster complex catalyst and preparation method thereof

A multi-metal oxygen cluster, cyclodextrin technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve the problem of poor catalyst solubility and limited catalytic applications , complex preparation process and other problems, to achieve the effect of improving catalytic efficiency, low preparation cost and simple preparation method

Inactive Publication Date: 2015-05-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] For existing cyclodextrin-POMs composite catalysts, the preparation process is complex, the cost is high, the obtained catalyst has poor solubility, and the catalytic application is limited. One of the purposes of the present invention is to provide a cyclodextrin-polymetal oxide Cluster composite catalyst, the catalyst has a novel structure and has a good catalytic effect on the two-phase reaction of water and oil

Method used

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  • Cyclodextrin-multiple metal oxygen cluster complex catalyst and preparation method thereof
  • Cyclodextrin-multiple metal oxygen cluster complex catalyst and preparation method thereof
  • Cyclodextrin-multiple metal oxygen cluster complex catalyst and preparation method thereof

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Experimental program
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Embodiment 1

[0029] (1)γ-CD-H 4 SiW 12 o 40 Preparation of composite catalyst:

[0030] Weigh 1mmol (2.88g) H 4 SiW 12 o 40 and 1mmol (1.30g) γ-CD in a beaker, add 20mL of deionized water and stir to dissolve the two completely, mix well, filter, put the obtained filtrate in a small beaker, and place the small beaker with 10mL of acetonitrile solution In a large beaker, the large beaker was sealed, and the crystal was cultivated at room temperature by gas phase diffusion method, so that acetonitrile slowly diffused into the water phase, and placed at room temperature, and transparent block crystal a was obtained after 2 weeks.

[0031] The peak position and intensity in the X-ray powder diffraction pattern can reflect the crystal form, crystallinity, crystal state and other information of the substance. Carry out X-ray powder diffraction analysis to crystal a, by figure 1 It can be seen that the peak position of crystal a is related to that of γ-CD and H 4 SiW 12 o 40 are all dif...

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Abstract

The invention discloses a cyclodextrin-multiple metal oxygen cluster complex catalyst and a preparation method thereof, and belongs to the technical field of preparation of multiple metal oxygen cluster compound. The molecular formula of the catalyst is (C6H10O5)n.HmXM12O40; multiple metal oxygen cluster and cyclodextrin are fully dissolved and filtered; the filtrate is used for cultivating crystal at the room temperature with the vapor-phase diffusion method, and the catalyst is obtained. The catalyst is novel in structure, has relatively good catalytic effect on water-oil two phase reactions; the method is simple and convenient to operate.

Description

technical field [0001] The invention relates to a cyclodextrin-polymetallic oxygen cluster composite catalyst and a preparation method thereof, and belongs to the technical field of preparation of polymetallic oxygen cluster composites. Background technique [0002] Polyoxometalates (POMs) are a class of isopoly and heteropolyoxometalate compounds rich in molybdenum, tungsten, vanadium, niobium, tantalum and other transition elements in the framework structure, with structural diversity and adjustability , and excellent physical and chemical properties, it has broad research value and application prospects in structural chemistry, medicinal chemistry, catalytic chemistry and functional material chemistry (D.L.Long, R.Tsunashima, L.Cronin.Angew.Chem. Int. Ed. 2010, 49, 1736-1758). POMs are excellent acceptor molecules, which can combine with inorganic, organic molecules and ions to form supramolecular compounds with unique properties (A.Dolbecq, E.Dumas, C.R.Mayer, P.Mialane...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/16B01J31/18C07D301/12C07D303/04
Inventor 曹洁范艳璇徐冲胡长文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY