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A kind of method for preparing tetrahydrofuran dimethanol dialkyl ether

A technology of tetrahydrofuran dimethanol dialkyl ether and tetrahydrofuran dimethanol, which is applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., and achieves high yield, high silicon-to-aluminum ratio Controllable, high conversion activity

Active Publication Date: 2022-01-25
中科租赁(天津)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still few reports on the synthesis of tetrahydrofuran dimethanol dialkyl ethers so far.

Method used

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  • A kind of method for preparing tetrahydrofuran dimethanol dialkyl ether
  • A kind of method for preparing tetrahydrofuran dimethanol dialkyl ether
  • A kind of method for preparing tetrahydrofuran dimethanol dialkyl ether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Sample 1 # preparation

[0041] Add 0.5g of palladium nitrate to 20ml of deionized aqueous solution, stir until completely dissolved, weigh 10g of granular activated carbon and add it to the above solution, soak it at room temperature for 48h, dry it in an oven at 80°C for 2h, and then transfer to In the muffle furnace, after calcination at 500°C for 7h, the Pd / C catalyst was obtained, which was designated as sample 1 # . (The mass content of the active ingredient is 2%)

Embodiment 2

[0042] Example 2 Sample 2 # preparation

[0043] Add 0.5g of chloroplatinic acid to 20ml of deionized water solution, stir until completely dissolved, weigh 10g of granular activated carbon and add it to the above solution, soak it at room temperature for 48h, dry it in an oven at 80°C for 2h, and then transfer In the muffle furnace, after calcination at 500°C for 7 hours, the Pt / C catalyst was obtained, which was designated as sample 2# . (The mass content of the active ingredient is 2%)

Embodiment 3

[0044] Example 3 Sample 3 # preparation

[0045] Add 0.5g of palladium nitrate to 20ml of deionized aqueous solution, stir until completely dissolved, weigh 10g of granular alumina and add it to the above solution, soak it at room temperature for 48h, dry it in an oven at 80°C for 2h, and then transfer to In a muffle furnace, after calcination at 500°C for 7h, Pd / Al 2 o 3 Catalyst, denoted as sample 3 # . (The mass content of the active ingredient is 2%)

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Abstract

The application discloses a method for preparing tetrahydrofuran dimethanol dialkyl ether in one step from 5-hydroxymethylfurfural, comprising: passing the raw material containing 5-hydroxymethylfurfural into the reaction zone, and first mixing with the catalyst bed containing catalyst I layer is contacted under a hydrogen-containing atmosphere, and then contacted with a catalyst bed containing catalyst II to prepare 2,5-tetrahydrofuran dimethanol dialkyl ether; wherein, the catalyst I is selected from the preparation of 5-hydroxymethylfurfural At least one of 2,5-tetrahydrofuran dimethanol catalysts; the catalyst II is selected from 2,5-tetrahydrofuran dimethanol to prepare at least one of 2,5-tetrahydrofuran dimethanol dialkyl ether catalysts. The catalytic process can continuously and efficiently obtain tetrahydrofuran dimethanol dialkyl ether products, has the advantages of simple operation, high product yield, stable catalyst performance, etc., and has a good application prospect.

Description

technical field [0001] The application relates to a method for preparing tetrahydrofuran dimethanol dialkyl ether, which belongs to the field of organic compound synthesis. Background technique [0002] Tetrahydrofuran dimethanol dialkyl ether has the characteristics of high octane number and fuel miscibility, and is considered as a potential biofuel additive. In particular, compared with furandimethanol dialkyl ether, tetrahydrofurandimethanol dialkyl ether has more stable chemical properties due to the selective hydrogenation of the furan ring. However, so far there are few reports on the synthesis of tetrahydrofuran dimethanol dialkyl ether. 5-Hydroxymethylfurfural is an important bio-based platform compound, which can be used to prepare a variety of high value-added chemicals through hydrogenation, oxidation, etherification and other reactions. With the mature production process, 5-hydroxymethylfurfural has achieved large-scale production. If 5-hydroxymethylfurfural c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/12B01J23/44B01J23/755B01J37/02B01J29/40B01J37/10
CPCC07D307/12B01J23/44B01J23/755B01J37/0201B01J29/40B01J37/10
Inventor 张维金海涛陈晨胡云函何凤林尚明路
Owner 中科租赁(天津)有限公司