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Application of a copper-doped aluminum phosphate molecular sieve catalyst synthesized by ionothermal method in the synthesis of 5-hydroxymethylfurfural

A technology of aluminum phosphate molecular sieve and hydroxymethylfurfural, applied in molecular sieve catalysts, physical/chemical process catalysts, organic chemistry, etc., can solve problems such as increasing the difficulty of product separation, reducing catalyst stability, and limiting industrial applications

Active Publication Date: 2020-07-07
ZHEJIANG SUGAR ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of a large number of by-products not only increases the difficulty of product separation, but also reduces the stability of the catalyst, which greatly limits the industrial application of this process

Method used

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  • Application of a copper-doped aluminum phosphate molecular sieve catalyst synthesized by ionothermal method in the synthesis of 5-hydroxymethylfurfural
  • Application of a copper-doped aluminum phosphate molecular sieve catalyst synthesized by ionothermal method in the synthesis of 5-hydroxymethylfurfural
  • Application of a copper-doped aluminum phosphate molecular sieve catalyst synthesized by ionothermal method in the synthesis of 5-hydroxymethylfurfural

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1: Sample S1 # preparation of

[0068] Place the two-necked round-bottomed flask in a 90°C oil bath, and add 40.0g [BMIM]Br, 7.2g phosphoric acid, 5.0g aluminum isopropoxide, 2.5g n-dipropylamine, 0.12g copper acetate and 0.16g hydrofluoric acid. After stirring evenly, quickly transfer the mixture to a muffle furnace at 280°C, take it out after crystallization for 30 minutes, cool to room temperature, filter, wash with deionized water, dry at 100°C for 2 hours, and roast at 550°C for 7 hours to prepare Obtain the copper-doped aluminum phosphate molecular sieve, denoted as S1 # .

Embodiment 2

[0069] Example 2: Sample S2 # preparation of

[0070] Place the two-necked round-bottomed flask in a 90°C oil bath, and add 40.0g [BMIM]Br, 7.2g phosphoric acid, 5.0g aluminum isopropoxide, 2.5g n-dipropylamine, 0.72g copper acetate and 0.16g hydrofluoric acid. After stirring evenly, quickly transfer the mixed solution to a muffle furnace at 290°C, take it out after crystallization for 15 minutes, cool to room temperature, filter, wash with deionized water, dry at 110°C for 2 hours, and roast at 550°C for 7 hours to prepare Obtain the copper-doped aluminum phosphate molecular sieve, denoted as S2 # .

Embodiment 3

[0071] Example 3: Sample S3 # preparation of

[0072] Place the two-necked round-bottomed flask in an 80°C oil bath, and add 40.0g of [BMIM]Br, 7.2g of phosphoric acid, 5.0g of aluminum isopropoxide, 2.5g of n-dipropylamine, 0.96g of copper acetate and 0.16g of hydrofluoric acid. After stirring evenly, quickly transfer the mixture to a muffle furnace at 280°C, take it out after crystallization for 45 minutes, cool to room temperature, filter, wash with deionized water, dry at 120°C for 2 hours, and roast at 500°C for 7 hours to obtain The copper-doped aluminum phosphate molecular sieve, denoted as S3 # .

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Abstract

The invention discloses application of a copper doped aluminum phosphate molecular sieve catalyst synthesized by an ionothermal method in a reaction which catalyzes fructose dewatering to prepare 5-hydroxymethyl furfural. The copper doped aluminum phosphate molecular sieves are synthesized through the ionothermal method, short in crystallization time and high in molecular sieve yield, and the aluminum phosphate molecular sieves with appropriate copper doping quantity can efficiently catalyze fructose dewatering to prepare 5-hydroxymethyl furfural to allow 5-hydroxymethyl furfural yield to reach 99%.

Description

technical field [0001] The invention relates to the application of a copper-doped aluminum phosphate molecular sieve catalyst synthesized by an ionothermal method in the reaction of catalyzing the dehydration of fructose to prepare 5-hydroxymethylfurfural, and belongs to the field of chemical engineering. Background technique [0002] 5-Hydroxymethylfurfural (5-HMF) is an important bio-based platform compound and an important intermediate in the synthesis of a variety of fine chemicals and furan-based polymers. bridge between. At present, 5-HMF is mainly obtained by selective dehydration of sugars (carbohydrates such as fructose, glucose, and cellulose) under acidic conditions. Among them, the production of 5-HMF from fructose is less difficult and easier to obtain. yield. Compared with homogeneous catalysts, solid acid catalysts represented by molecular sieves have the advantages of easy separation, recyclability, low corrosion, and high hydrothermal stability, which make...

Claims

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Application Information

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IPC IPC(8): C07D307/46B01J29/83
CPCY02P20/584
Inventor 王磊张建胡华雷黄艳方雯婷胡丹鑫
Owner ZHEJIANG SUGAR ENERGY TECH CO LTD
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