A metal-nanoparticle-loaded polymer catalyst capable of classified catalysis for substrates and a preparing method thereof

Abstract

A metal-nanoparticle-loaded polymer catalyst capable of classified catalysis for substrates and a preparing method thereof are provided. A self-classification and self-assembly supermolecule polymer having two kinds of hydrogen bonds with different intensities and having electrostatic interaction is adopted as a carrier of a catalyst active compound. The carrier is prepared by polymerization of vinyl imidazole, olefin acid and alkenyl amide / enol. The catalyst is prepared by dissolving the vinyl imidazole, the olefin acid, the alkenyl amide / enol, an active compound precursor, a crosslinking agent and an initiator into an organic solvent, heating under protection of nitrogen to initiate polymerization to form a polymer catalyst precursor, subjecting metal ions in the polymer catalyst precursor to reduction by sodium borohydride, repeatedly rinsing with water and ethanol, and drying in vacuum. The self-classification and self-assembly supermolecule polymer endows the catalyst with classifying response capability for substrates. The catalyst is directly prepared by the self-classification and self-assembly behaviors of the supermolecule polymer. The catalyst and the preparing method are characterized in that raw materials are easily available and convenient to prepare, the process is simple, the catalyst and the preparing method have certain universality, and the like.

Description

technical field [0001] The invention belongs to the technical field of functional and intelligent polymer materials, and in particular relates to a metal nanoparticle-loaded polymer catalyst whose substrate can be classified and catalyzed and a preparation method thereof. Background technique [0002] For a long time, realizing the control and adjustment of the catalytic process has been a major scientific and technological problem that the industry urgently needs to solve. The development of synthetic chemistry and intelligent new materials has created conditions for the realization of this goal. Inspired by drug controlled release technology, scientists discovered that using poly-N-isopropylacrylamide (PNIPAm) as the carrier and metal nanoparticles as the active component, a new concept catalyst with intelligent temperature responsiveness can be developed. When polyacrylic acid, crown ether polymer, trityl polymer, etc. are used as metal nanoparticle carriers, a new conce...

AI Technical Summary

Problems solved by technology

However, in practical applications, the preparation methods of these polymer catalysts cannot meet the requirements for substantial control and modulation of the catalytic process.

The reason is that the actual catalytic process is usually complicated, involving multi-step catalysis and multi-component substrate reaction process. The current polymer catalysts cannot meet the fundamental requirements of substrate classification catalysis and modulation, and cannot meet the actual needs of catalytic development.

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