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Bifunctional catalyst, preparation and application of bifunctional catalyst in one-step synthesis of 2, 5-furan dialkyl ether from 5-hydroxymethylfurfural

A bifunctional catalyst and compound technology, applied in the field of molecular sieves, can solve problems such as complex operation and BHMF loss

Pending Publication Date: 2020-08-28
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these studies all adopt a two-step method in a tank reactor, during which the product and catalyst need to be separated, which is not only complicated to operate, but also easily leads to the loss of BHMF

Method used

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  • Bifunctional catalyst, preparation and application of bifunctional catalyst in one-step synthesis of 2, 5-furan dialkyl ether from 5-hydroxymethylfurfural
  • Bifunctional catalyst, preparation and application of bifunctional catalyst in one-step synthesis of 2, 5-furan dialkyl ether from 5-hydroxymethylfurfural
  • Bifunctional catalyst, preparation and application of bifunctional catalyst in one-step synthesis of 2, 5-furan dialkyl ether from 5-hydroxymethylfurfural

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] Example 1 Sample 1 # preparation

[0098] Mix 0.24g of aluminum isopropoxide, 12g of tetrapropylammonium hydroxide, 13mL of ethyl orthosilicate, 1.6mL of octadecyltrimethoxysilane and 50mL of ethanol in a beaker, and stir at room temperature until a gel is formed; The gel was dried at room temperature for 160 hours, and the dried gel was transferred to a 50ml liner, and then transferred to a 250mL stainless steel hydrothermal kettle containing 50ml deionized water, and crystallized at 180°C for 80h under a water vapor atmosphere; after filtration and washing , after drying at 110°C for 3 hours and calcining at 550°C for 8 hours, the hierarchically porous ZSM-5 molecular sieve sample was obtained, which was designated as sample 1 # .

Embodiment 2

[0099] Example 2 Sample 2 # preparation of

[0100] Mix 0.24g of aluminum isopropoxide, 12g of tetrapropylammonium hydroxide, 13mL of ethyl orthosilicate, 1.6mL of hexadecyltrimethoxysilane and 50mL of ethanol in a beaker, and stir at room temperature until a gel is formed; The gel was dried at room temperature for 160 hours, and the dried gel was transferred to a 50ml inner liner, and then transferred to a 250mL stainless steel hydrothermal kettle containing 50ml deionized water, and crystallized at 180°C for 70 hours under a water vapor atmosphere; after filtration and washing After drying at 110° C. for 4 hours and calcination at 550° C. for 7 hours, the hierarchically porous ZSM-5 molecular sieve sample was obtained. Take 0.8g copper nitrate trihydrate and add it to 4mL deionized water, then add 4g hierarchical porous ZSM-5 molecular sieve 1 # , impregnated for 48 hours, dried at 80°C for 2 hours, calcined at 480°C for 6 hours, and reduced at 400°C for 6 hours in a hydro...

Embodiment 3

[0101] Example 3 Sample 3 # preparation of

[0102] Mix 0.06g of aluminum isopropoxide, 12g of tetrapropylammonium hydroxide, 13mL of ethyl orthosilicate, 1.6mL of hexadecyltrimethoxysilane and 50mL of ethanol in a beaker, and stir at 25°C until a gel is formed; The gel was dried at room temperature for 160 hours, and the dry gel was transferred to a 50ml liner, and then transferred to a 250mL stainless steel hydrothermal kettle containing 50ml deionized water, and crystallized at 170°C for 90h under a water vapor atmosphere; filtered and washed After drying at 110°C for 2 hours and calcination at 550°C for 7 hours, the hierarchically porous ZSM-5 molecular sieve sample was obtained, which was designated as sample 3 # .

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Abstract

The invention discloses a bifunctional catalyst. The bifunctional catalyst comprises a carrier and metal elements with hydrogenation activity, wherein the carrier is a hierarchical pore ZSM-5 molecular sieve carrier, and the hierarchical pore ZSM-5 molecular sieve contains a mesoporous structure. The bifunctional catalyst takes a hierarchical pore ZSM-5 molecular sieve as a carrier and is loaded with the metal component with hydrogenation activity. The catalyst has high activity and selectivity and good stability, and has a good application prospect in the field of catalysts.

Description

technical field [0001] The application relates to a bifunctional catalyst and its preparation method, and its application as a catalyst in the one-step preparation of 2,5-furandimethanol dialkyl ether by catalyzing 5-hydroxymethylfurfural in a fixed-bed reactor, belonging to the field of molecular sieves . Background technique [0002] 2,5-Dialkylfurandimethanol (BAMF) has high energy density and good fuel miscibility, and is a potential bio-based fuel additive. At present, the synthesis of BAMF mostly adopts a two-step method: 5-hydroxymethylfurfural (HMF) is first selectively hydrogenated to 2,5-furandimethanol (BHMF) under the action of a hydrogenation catalyst, and then BHMF is acidic BAMF can be obtained by etherification with monohydric alcohol on the catalyst. The literature [Synlett, 28, 2299-2302 (2017)] reported that Ru / ZrO 2 And Amberlyst-15 catalyzed HMF hydrogenation reaction and BHMF etherification reaction, the maximum yield of 2,5-furandimethanol diethyl e...

Claims

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Application Information

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IPC IPC(8): B01J29/46B01J29/44B01J35/10C07D307/42
CPCB01J29/46B01J29/44C07D307/42B01J2229/18B01J35/647Y02P20/584
Inventor 胡华雷胡丹鑫金海涛张建王磊陈慧杨杰贺怡杨勇卢国文
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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