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Preparation and Application of a Porous Rare Earth Organic Complex-Based Catalyst

A rare earth organic and catalyst technology, applied in the preparation of organic compounds, organic compound/hydride/coordination complex catalysts, preparation of amino compounds, etc., can solve problems such as large specific surface energy, reduced catalytic activity, and easy agglomeration , to achieve the effect of avoiding agglomeration and high catalytic activity

Inactive Publication Date: 2016-04-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the catalytic activity of nano-silver, the purpose of its preparation is to obtain monodisperse and shape-controllable particles, but because of its large specific surface energy, it is easy to agglomerate during the synthesis and catalytic process, resulting in a decrease in its catalytic activity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing Ce-MOF: add 4.0mLDMF and 4.0mLH 2 In the mixed solvent of O, add 0.25mmol of isophthalic acid, 0.5mmol of cerium nitrate hexahydrate, 60℃, 120W ultrasonic for 5min, centrifugal separation, wash the obtained crystals with a 1:1 mixture of ethanol and water by volume , Dry, and obtain the porous rare earth metal organic complex crystal Ce-MOF, the yield is 87%, the chemical formula is {[Ce(C 6 H 3 (COO) 3 (H 2 O))·(H 2 O) 0.5 DMF}n, a porous rare earth metal organic complex with a three-dimensional structure; its one-dimensional structure has a structural channel with a side length of about 6.3 × 6.3? The channel is occupied by guest water molecules and DMF molecules; it can be heated at 200°C. Remove guest molecules.

Embodiment 2

[0030] A method for preparing Ce-MOF: add 4.0mLDMF and 4.0mLH 2 In the mixed solvent of O, add 0.30mmol of isophthalic acid, 0.6mmol of cerium nitrate hexahydrate, 60℃, 120W ultrasonic 8min, centrifugal separation, and wash the obtained crystals with a 1:1 mixture of ethanol and water by volume. , Dried to obtain porous rare earth metal organic complex crystal Ce-MOF with a yield rate of 90%. The chemical formula, structure and properties are the same as those in Example 1.

Embodiment 3

[0032] A method for preparing Ce-MOF: add 4.0mLDMF and 4.0mLH 2 In the mixed solvent of O, add 0.27mmol of mellitic acid, 0.55mmol of cerium nitrate hexahydrate, 60℃, 120W ultrasonic for 7min, centrifugal separation, wash the obtained crystals with a 1:1 mixture of ethanol and water by volume , Dried to obtain porous rare earth metal organic complex crystal Ce-MOF with a yield of 88%. The chemical formula, structure and properties are the same as those in Example 1.

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Abstract

The present invention relates to a preparation method of a porous rare earth organic complex base catalyst, and belongs to the technical fields of material science, nanometer materials, catalysis and the like. According to the present invention, trimesic acid and cerium nitrate are adopted as raw materials, ultrasound is performed to prepare a water stable porous rare earth metal organic framework material Ce-MOF, the Ce-MOF is adopted as a carrier, nanometer Ag is anchored on the surface, and a porous titanium dioxide shell layer is coated to prepare the ternary composite material Ce-MOF@Ag@TiO2. The composite material has the excellent performance of catalytic reduction of unsaturated organic compounds, and has good application prospects in heterogeneous catalytic reduction reactions.

Description

Technical field [0001] The invention relates to a preparation method and application of a porous rare earth organic complex-based catalyst, in particular to a Ce-MOFAgTiO 2 The preparation method of the catalyst and its application of catalytic reduction of organic matter belong to the technical fields of materials science, nanomaterials, metal organic complexes, chemical industry, catalysis and the like. Background technique [0002] Metal-organic complexes are a type of polymer formed by coordination and complexation based on different metal ions and various rigid or flexible organic ligands. The complex not only integrates inorganic chemistry and organic chemistry, but also closely links disciplines such as inorganic chemistry, crystal chemistry, and materials chemistry. It has potential in catalysis, molecular recognition, optoelectronics, magnetism, host-guest exchange, and molecular conductors. Application has become one of the hot spots in the research and development of n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/38C07C211/52C07C209/36
Inventor 王志玲李海芳陈瑶杨小风郑鲁沂刘志连
Owner UNIV OF JINAN
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