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A kind of magnetic iron oxide heteropolyacid catalyst and its synthesis method

A technology of magnetic iron oxide and synthesis method, applied in the direction of physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, chemical instrument and method, etc., can solve the problems of few catalyst types and uneven dispersion, Achieve the effect of good catalytic effect, high catalytic activity and large saturation magnetization

Inactive Publication Date: 2020-07-24
ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a magnetic iron oxide heteropolyacid catalyst and its synthesis method to solve the problem that the directional transformation of lignocellulosic biomass into multifunctional platform compounds requires a catalyst with higher acidity, and there are few types of catalysts in the catalyst field. and the problem of uneven dispersion

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  • A kind of magnetic iron oxide heteropolyacid catalyst and its synthesis method

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Effect test

Embodiment 1

[0032] A kind of synthetic method of magnetic iron oxide heteropolyacid catalyst, the steps are as follows:

[0033] 1) Preparation of magnetic iron oxide particles

[0034] Heat a three-necked flask containing 100 mL of distilled water in a water bath at 60 °C in advance, and then add 0.1 g of Na 2 SO 3 Particles, sonicate in an ultrasonic cleaner for 30 min; then add 7.18g FeSO 4 ·7H 2 O and 14.36 g FeCl 3 ·6H 2 O, stir well, then add NH dropwise 3 ·H 2 O to adjust the pH to 10; continue to sonicate for 60 minutes, then raise the temperature to 80°C, age for 30 minutes, cool down, wash the filtrate repeatedly until neutral, and vacuum-dry at a constant temperature of 50°C to obtain magnetic iron oxide particles.

[0035] 2) Protection of magnetic iron oxide particles

[0036]Take 1 g of the magnetic iron oxide particles prepared in step 1) and disperse them in deionized water, add 10 mL of 5% polyvinylpyrrolidone in absolute ethanol, and stir at room temperature for...

Embodiment 2

[0040] A kind of synthetic method of magnetic iron oxide heteropolyacid catalyst, the steps are as follows:

[0041] 1) Prepare product A according to the method in Example 1;

[0042] 2) Synthesis of Magnetic Heteropolyacid Catalyst

[0043] Weigh 1g of the product A prepared in step 1) and dissolve it in 20mL of ethanol solution, add 8mL of H 3 PMo 12 o 40 Aqueous solution, let it stand for 10 minutes, stir at room temperature for 30 minutes to make it evenly dispersed; then place it in a microwave reactor with a microwave power of 400W and a microwave temperature of 35°C for 30 minutes, then age it at room temperature for 12 hours; put it in a muffle furnace and roast at high temperature for 3 hours to obtain Magnetic iron oxide heteropolyacid catalyst.

Embodiment 3

[0045] A kind of synthetic method of magnetic iron oxide heteropolyacid catalyst, the steps are as follows:

[0046] 1) Prepare product A according to the method in Example 1;

[0047] 2) Synthesis of Magnetic Heteropolyacid Catalyst

[0048] Weigh 1g of the product A prepared in step 1) and dissolve it in 20mL of ethanol solution, add 8mL of H 3 PMo 12 o 40 Aqueous solution, let it stand for 10 minutes, stir at room temperature for 30 minutes to make it evenly dispersed; then place it in a microwave reactor with a microwave power of 400W and a microwave temperature of 45°C for 40 minutes, then age it at room temperature for 12 hours; put it in a muffle furnace and roast it at high temperature for 3 hours to obtain Magnetic iron oxide heteropolyacid catalyst.

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Abstract

The invention belongs to the technical field of catalyst preparation, and especially relates to a magnetic iron oxide heteropolyacid catalyst and a synthetic method thereof. The catalyst is prepared by using a magnetic iron oxide particle as a core and loading an active group on the surface and in the internal pores of the protected magnetic iron oxide particle through a co-precipitation technology. The novel magnetic iron oxide heteropolyacid catalyst provided by the invention is simple to prepare, is suitable for directionally catalyzing the high-efficiency conversion of lignocellulose biomass into multifunctional platform compounds (such as a hydrolysis reaction, a hydrogenation reaction and alcoholysis reaction, and especially suitable for directionally catalyzing a reaction for high efficiency hydrolysis of the lignocellulose biomass to prepare acetylpropionic acid), and has a high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of catalyst preparation, in particular to a magnetic iron oxide heteropolyacid catalyst and a synthesis method thereof. Background technique [0002] With the enhancement of people's environmental awareness and higher requirements for energy and resources, coupled with the depletion of traditional energy resources, the national "13th Five-Year Plan" energy plan clearly proposes to promote the transformation of energy structure and transform energy consumption patterns; thus , Renewable energy has been vigorously developed as a clean and green alternative energy due to its renewability and many other advantages. As a large agricultural country, our country is also a large forestry country. It has extremely rich biomass energy resources and has good conditions for the development and utilization of biomass energy. This is very important for solving energy and environmental problems in our country, promoting ru...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/28B01J31/18B01J23/745C07C51/00C07C59/185
CPCB01J23/745B01J27/19B01J35/0033C07C51/00C07C59/185
Inventor 雷廷宙李学琴王志伟何晓峰朱金陵陈高峰杨延涛徐海燕关倩李自杰白炜杨树华岳峰吴铁良张征于显敬
Owner ENERGY RES INST CO LTD HENAN ACADEMY OF SCI
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