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Method for preparing tetrahydrofuran dimethanoldialkyl 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.

Active Publication Date: 2021-09-10
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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  • Method for preparing tetrahydrofuran dimethanoldialkyl ether
  • Method for preparing tetrahydrofuran dimethanoldialkyl ether
  • Method for preparing tetrahydrofuran dimethanoldialkyl 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 invention discloses a method for preparing tetrahydrofuran dimethanol dialkyl ether from 5-hydroxymethylfurfural in one step. The method comprises the following steps: introducing a raw material containing 5-hydroxymethylfurfural into a reaction zone, firstly contacting with a catalyst bed layer containing a catalyst I in a hydrogen-containing atmosphere, and then contacting with a catalyst bed layer containing a catalyst II to prepare 2,5-tetrahydrofuran dimethanol dialkyl ether, wherein the catalyst I is selected from at least one of catalysts for preparing 2, 5-tetrahydrofuran dimethanol from 5-hydroxymethylfurfural, and the catalyst II is selected from at least one of catalysts for preparing 2, 5-tetrahydrofuran dimethanol dialkyl ether from 2, 5-tetrahydrofuran dimethanol. The catalytic process can be used for continuously and efficiently obtaining the tetrahydrofuran dimethyl carbinol dialkyl ether product, has the advantages of simplicity in operation, high product yield, stable catalyst performance and the like, 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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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
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