Penetrable silicone elastomer/nano catalyst material and preparation method thereof

Abstract

The invention relates to a penetrable silicone elastomer / nano catalyst material and a preparation method thereof. The penetrable silicone elastomer / nano catalyst material is prepared from the following components in percentage by mass: 0.01 to 40 percent of nano catalyst and 60% to 99.99 percent of silicone polymer. The nano catalyst is uniformly ground; the ground nano catalyst is sufficiently mixed with a penetrable silicone elastomer precursor; an obtained mixture is put into a mold to carry out extrusion molding, and is put in the air, so as to obtain the penetrable silicone elastomer / nano catalyst material; or the silicone elastomer precursor is put into the mold to carry out the extrusion molding, a polymerization reaction is carried out in the air, so as to obtain a silicone elastomer polymer, afterwards, a nano catalyst solution is mixed with the silicone elastomer polymer, and the rotary evaporation is carried out, so as to obtain the penetrable silicone elastomer / nano catalyst material. By using the penetrable silicone elastomer / nano catalyst material, the recycling of the catalyst is realized; moreover, the reaction yield is not influenced. The penetrable silicone elastomer / nano catalyst material has significant meaning for decreasing production cost.

Description

technical field [0001] The invention belongs to the field of catalyst materials and preparation thereof, in particular to a penetrating silicone elastomer / nano catalyst material and a preparation method thereof. Background technique [0002] As we all know, metal catalysts play a vital role in chemical reactions, but many metal catalysts are difficult to recycle, use and separate from products, resulting in excessive heavy metal content in products, so supported catalysts have become the focus of scientists' research . [0003] The reactions catalyzed by catalysts generally have high selectivity and catalytic activity. In addition, catalysts also have the advantages of mild reaction conditions, few side reactions, and easy control. Therefore, it has received extensive and continuous attention in the field of organic chemistry. However, the catalyst also has the following significant disadvantages: the first, the center metal used in the homogeneous catalyst uses more noble...

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Problems solved by technology

However, the catalyst also has the following significant disadvantages: the first, the center metal used in the homogeneous catalyst uses more noble metals, which is expensive and difficult to synthesize; the second, because the catalyst loading used in most cases is 1-10mol% , the high cost of the metal catalyst and the difficulty of recycling limit its use; third, in the reaction catalyzed by the catalyst, trace metal pollutants are easily leached in the product and are difficult to remove, and the requirements for heavy metal pollutants are relatively strict unacceptable in pharmaceutical manufacturing of

This leads to many problems such as difficulty in recovery by filtration, leaching of metal catalysts and drying of fine particles which have a detrimental effect on the chemical industry

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