Glycerin monobutyrate preparation process and magnetic solid catalyst

A solid catalyst and magnetic technology, used in the preparation of carboxylate, catalyst protection, physical/chemical process catalyst, etc., can solve the problems of easily corroded equipment, non-recyclable, environmental pollution, etc., to avoid agglomeration and meet recycling and reuse. Effect

Pending Publication Date: 2022-07-15
SHANDONG CHENGWU YIXIN ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the catalytic esterification reaction, the catalysts used are mostly homogeneous catalysts. This type of catalyst has the advantages of easy availability and low cost, so it is widely used, but there are also corrosive equipment, which cannot be recycled and easily cause environmental pollution. Other disadvantages that cannot be ignored

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A magnetic solid catalyst, comprising:

[0031] by Fe 3 O 4 A carrier composed of magnetic nanoparticles;

[0032] A dispersion modified layer formed by wrapping polyacrylic acid on the carrier;

[0033] A porous composite layer crystallized from activated carbon, silica and concentrated sulfuric acid and attached to the outside of the dispersion modified layer, and sulfonic acid groups are distributed in the pores of the porous composite layer

[0034] A magnetic solid catalyst is obtained by the following method:

[0035] will Fe 3 O 4 Magnetic nanoparticles and ammonium persulfate were added to deionized water, ultrasonically dispersed and then added to acrylic acid solution, heated to 65 °C and stirred continuously for 2 h, in which Fe 3 O 4 The mixing ratio of magnetic nanoparticles, ammonium persulfate and acrylic acid solution is 2: 1: 1, load an external magnetic field to separate solids, and obtain polyacrylic acid-coated Fe after drying 3 O 4 magnetic...

Embodiment 2

[0042] A magnetic solid catalyst, comprising:

[0043] by Fe 3 O 4 A carrier composed of magnetic nanoparticles;

[0044] A dispersion modified layer formed by wrapping polyacrylic acid on the carrier;

[0045] A porous composite layer crystallized from activated carbon, silica and concentrated sulfuric acid and attached to the outside of the dispersion modified layer, and sulfonic acid groups are distributed in the pores of the porous composite layer

[0046] A magnetic solid catalyst is obtained by the following method:

[0047] will Fe 3 O 4 Magnetic nanoparticles and ammonium persulfate were added to deionized water, ultrasonically dispersed and then added to acrylic acid solution, heated to 70 °C and stirred continuously for 1.5 h, in which Fe 3 O 4 The mixing ratio of magnetic nanoparticles, ammonium persulfate and acrylic acid solution is 2: 1: 1, load an external magnetic field to separate solids, and obtain polyacrylic acid-coated Fe after drying 3 O 4 magnet...

Embodiment 3

[0054] A magnetic solid catalyst, comprising:

[0055] by Fe 3 O 4 A carrier composed of magnetic nanoparticles;

[0056] A dispersion modified layer formed by wrapping polyacrylic acid on the carrier;

[0057]A porous composite layer crystallized from activated carbon, silica and concentrated sulfuric acid and attached to the outside of the dispersion modified layer, and sulfonic acid groups are distributed in the pores of the porous composite layer

[0058] A magnetic solid catalyst is obtained by the following method:

[0059] will Fe 3 O 4 Magnetic nanoparticles and ammonium persulfate were added to deionized water, ultrasonically dispersed and then added to acrylic acid solution, heated to 75 °C and stirred continuously for 2 h, in which Fe 3 O 4 The mixing ratio of magnetic nanoparticles, ammonium persulfate and acrylic acid solution is 2: 1: 1, load an external magnetic field to separate solids, and obtain polyacrylic acid-coated Fe after drying 3 O 4 magnetic ...

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PUM

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Abstract

The invention belongs to the technical field of preparation of glyceryl monobutyrate, and discloses a preparation process of glyceryl monobutyrate and a magnetic solid catalyst, the magnetic solid catalyst comprises: a carrier composed of Fe3O4 magnetic nanoparticles; the dispersed modification layer is formed by coating the carrier with polyacrylic acid; the porous composite layer is formed by crystallizing activated carbon, silicon dioxide and concentrated sulfuric acid and is attached to the outside of the dispersion modification layer, and sulfonic acid groups are distributed in pore channels of the porous composite layer; in conclusion, the magnetic material is introduced into the solid acid catalyst, so that the solid acid catalyst has certain magnetism and reaction stability under the condition of keeping relatively high catalytic activity; and the magnetic material carrier is coated with polyacrylic acid, so that the agglomeration phenomenon of nanoparticles of the magnetic material is effectively avoided, and the magnetic solid catalyst can effectively form uniform catalysis in the esterification reaction.

Description

technical field [0001] The invention belongs to the technical field of preparation of glycerol monobutyrate, and in particular relates to a preparation process of glycerol monobutyrate and a magnetic solid catalyst. Background technique [0002] Glycerol monobutyrate is an ester compound formed by the esterification of one molecule of glycerol and one molecule of butyric acid. Glycerides added to the feed naturally pass through the stomach, and can be directly absorbed by the small intestinal villi after entering the small intestine, which in turn has beneficial effects on the health and development of the animal's intestinal tract. [0003] In the catalytic esterification reaction, the catalysts used are mostly homogeneous catalysts, which have the advantages of easy availability and low cost, so they are widely used. and other shortcomings that cannot be ignored. SUMMARY OF THE INVENTION [0004] In view of this, in order to solve the problems raised in the above backg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J31/06B01J31/40B01J31/28B01J33/00B01J35/00C07C67/08C07C69/30
CPCC07C67/08B01J35/0033B01J31/0225B01J31/06B01J33/00B01J31/28B01J31/403B01J2231/49C07C69/30
Inventor 孙献冲
Owner SHANDONG CHENGWU YIXIN ENVIRONMENTAL TECH CO LTD
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