Preparation method of palladium-based polyaniline coated carbon nanotube nano catalyst and application of nano catalyst in Heck reaction

A nano-catalyst, carbon nanotube technology, applied in catalytic reactions, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of easy loss, high cost, polluted products, etc., to suppress loss and agglomeration, and effectively recover. effect of separation and cost reduction
CN108080025AInactive Publication Date: 2018-05-29GUANGDONG MEDICAL UNIV
11 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGDONG MEDICAL UNIV
Publication Date
2018-05-29
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a preparation method of a palladium-based polyaniline coated carbon nanotube nano catalyst, wherein the preparation method mainly includes the following steps: purification ofa carbon nanotube (CNT); preparation of a polyaniline (PANI) coated carbon nanotube (PANI@CNT); and preparation of the Pd / PANI@CNT catalyst. The polyaniline coated carbon nanotube is used, and Pd nanoparticles are loaded on the surface of the PANI@CNT; the formed nano catalyst Pd / PANI@CNT has a quite good reuse performance in a Heck reaction; after reaction is carried out for 10 times, the activity is not reduced. In the prepared Pd / PANI@CNT, a large number of nitrogen-containing functional groups form coordination bonds with Pd, the bonds are quite stable and effectively inhibit the loss andagglomeration of Pd nanoparticles, and thus the cost of the catalyst is effectively reduced. In addition, the catalyst can be effectively recovered and separated, and the contamination and repurification process of the product is prevented.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the technical field of Heck reaction catalyst synthesis, in particular to a preparation method of a palladium-based polyaniline-wrapped carbon nanotube nanocatalyst and its application in Heck reaction. Background technique

[0002] Heck reaction is a kind of carbon-carbon coupling reaction, which is a kind of carbon-carbon coupling reaction between halogenated aromatic compounds and organic compounds with double bonds at the end. In the chemical process, the Heck reaction is usually used to extend the carbon chain. At present, the Heck reaction has been applied in many types of organic synthesis fields, such as: drug synthesis, perfume synthesis, etc. For the Heck reaction, Pd catalyst is the most active catalyst. Traditional Pd-based catalysts are homogeneous Pd catalysts. However, this type of catalyst has serious disadvantages, that is, it is difficult to recover from the product after the reaction, resulting in contamin...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More