Selective oxidative light catalyst and preparing method thereof

A photocatalyst, selective technology, applied in physical/chemical process catalysts, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc., to achieve the effect of increasing efficiency, high selectivity, and reducing reaction costs

Inactive Publication Date: 2004-12-08
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these biomimetic catalytic systems are all dark reaction systems, and currently only have the properties of monooxygenases, that is, atomic oxygen such as hydrogen peroxide must be used to realize the catalytic cycle.

Method used

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  • Selective oxidative light catalyst and preparing method thereof
  • Selective oxidative light catalyst and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Get selected 10 grams of molecular sieves, join in the reactor after pretreatment, ferric dichloride (FeCl 2 4H 2 O) dubbed 2×10 -3 The aqueous solution of M was 0.5 liters, stirred for more than 5 hours to fully load the metal ions. Continue to wash with water without iron ions and dry for later use. Mix 2 g of α, α'-bipyridine with the prepared molecular sieve, grind it thoroughly, place it in a closed container, and heat it to 90° C. in a tube furnace for 24 hours to react. Wrap the obtained crude product with filter paper, and use CH 2 Cl 2 As a solvent, use a Soxhlet extractor to remove excess ligands, heat and dry at 50°C under nitrogen protection before use.

Embodiment 2

[0043] Prepare 10 grams of molecular sieves loaded with ferrous iron with Example 1, and take by weighing 1,10-phenanthroline (C 12 h 8 N 2 ·H 2 (0) 3 grams, mixed evenly, placed in a closed container, heated to 90°C in a tube furnace to react for 24 hours. Wrap the prepared crude product with filter paper, use acetone as a solvent, remove excess ligands with a Soxhlet extractor, heat and dry at 50°C under nitrogen protection, and then use it.

Embodiment 3

[0045] 10 grams of ferrous iron-loaded molecular sieves were prepared in the same manner as in Example 1, and 2 grams of Schiff bases were weighed, mixed evenly, placed in a closed container, and heated to 90° C. in a tube furnace for 24 hours to react. Wrap the obtained crude product with filter paper, and use CH 2 Cl 2 As a solvent, use a Soxhlet extractor to remove excess ligands, heat and dry at 50°C under nitrogen protection before use.

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Abstract

A photocatalyst for selective oxidization is prepared from the inorganic carrier including NaX and NaY molecular sieves, ZSM-5 molecular sieve, mesopore molecular sieve, SO2, and Al2O3, the transition metal ions chosen from Fe, Mn, Ni and Co and the organic ligand chosen from alpha, alpha'-bipyridine, 1-(2-pyridineazo)-2-naphthol (PAN), schiff base, etc through complexing.

Description

technical field [0001] The invention relates to a photocatalyst, in particular to a photocatalyst for selective oxidation. [0002] The present invention also relates to a preparation method of the above-mentioned photocatalyst. Background technique [0003] With the continuous development of world science and technology, environmental protection and sustainable development are getting more and more attention. In recent years, in the field of organic synthesis, green oxidation has attracted widespread attention as an environmentally friendly research direction. The so-called green oxidation refers to the oxidation reaction that uses hydrogen peroxide or molecular oxygen as the oxidant and water or other non-toxic compounds as the solvent. If the molecular oxygen dissolved in the solution can be activated by clean solar energy under mild conditions, the It is more ideal to realize various oxidation processes with great application value and potential value, because: (1) sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22
Inventor 赵进才李静马万红任岩军
Owner INST OF CHEM CHINESE ACAD OF SCI
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