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Preparation method for tetrahydrofurfuryl alcohol

A technology for preparing tetrahydrofurfuryl alcohol and hydrogen, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, organic chemistry, etc., can solve problems such as increased cost and product separation difficulty, and reduce reaction costs , the effect of reducing costs and reducing the difficulty of separation

Active Publication Date: 2016-06-22
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of them use noble metal catalysts, and many of them use alcohol as the reaction solvent, which increases the cost of the reaction and the difficulty of product separation.

Method used

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  • Preparation method for tetrahydrofurfuryl alcohol
  • Preparation method for tetrahydrofurfuryl alcohol
  • Preparation method for tetrahydrofurfuryl alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-12

[0023] Preparation of the carrier:

[0024] Weigh a certain amount of Al(NO 3 ) 3 9H 2 O and M (NO 3 ) 2 (M=Mg, Ca, Sr, Ba) were dissolved in 100 mL of deionized water to keep the M / Al molar ratio at n%. Then dilute to 250 mL with deionized water. Under the condition of stirring, add an aqueous solution of precipitating agent dropwise to the above solution until the pH of the solution is 8-9. Stirring was continued for 4h, and the mixture was allowed to stand at room temperature for 24h. The above precipitate was centrifuged and washed 5 times, and then dried in an oven at 120°C for 12 hours. The dried precipitate was calcined at 600 °C for 6 h in a muffle furnace. get MO-Al 2 o 3 -n support (wherein n% is the molar ratio of M / Al, M=Mg, Ca, Sr, Ba).

[0025] Preparation of Ni supported catalyst

[0026] Weigh a certain amount of Ni(NO 3 ) 2 ·6H 2 O makes the Ni loading amount to 10wt%, adding to deionized water and stirring to dissolve. The alumina support prep...

Embodiment 13-17

[0031] Add two kinds of alkaline earth metal nitrate solutions during the preparation of the carrier in Example 3, so that the general structural formula of the prepared catalyst is Ni / M 1 O-M2 O-Al 2 o 3 , where M 1 , M 2 For two different alkaline earth metals, the molar content of both is n 1 % and n 2 %, other conditions are the same as Embodiment 3, and the reaction results are shown in Table 2.

[0032] Table 2 The effect of carrier components on the hydrogenation performance of furfural

[0033]

Embodiment 17-21

[0035] Adjust the nickel nitrate quality and carrier quality in embodiment 9, make the loading of nickel be x%, and change the molar ratio of furfural and Ni to be y;

[0036] Table 3 Effect of catalyst loading and product dosage on furfural hydrogenation performance

[0037]

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Abstract

The invention discloses a method for preparing tetrahydrofurfuryl alcohol through water-phase hydrogenation of furfural. According to the method, in a water-phase reaction medium, furfuryl alcohol undergoes one-step hydrogenation at 80 to 180 DEG C in a hydrogen atmosphere with a pressure of 0.5 to 10 Mpa under the action of alkaline earth metal-modified alumina-loaded nickel-based catalyst, thereby producing tetrahydrofurfuryl alcohol. The catalyst used in the water-phase hydrogenation is a metal-loaded catalyst; a carrier is an alumina carrier modified by one or more alkaline earth metals; the alkaline earth metal is one or more selected from a group consisting of Mg, Ca, Sr and Ba; and water is used as a solvent, which accords with the principles of green chemistry and enables cost to be reduced. The catalyst provided by the invention can realize high-yield preparation of tetrahydrofurfuryl alcohol in a water phase, reduces reaction cost and separating difficulty and enables the yield of tetrahydrofurfuryl alcohol to reach more than 99%.

Description

technical field [0001] The invention belongs to the field of organic chemistry, and in particular relates to a preparation method of tetrahydrofurfuryl alcohol and its application in catalytic furfural aqueous phase hydrogenation to prepare tetrahydrofurfuryl alcohol. Background technique [0002] Tetrahydrofurfuryl alcohol (also known as tetrahydrofuran methanol), is an important organic chemical raw material with a wide range of uses. For example, it can be used as a raw material for the preparation of organic chemicals such as pyran, pyridine, tetrahydrofuran, lysine, pentylene glycol, and γ-valerolactone; it can also be used as a solvent for coatings, resins, and oils; it can also be used for the preparation of decolorization Agents, plasticizers, insecticides, antifreeze, herbicides, etc. [0003] At present, the preparation methods of tetrahydrofurfuryl alcohol are mainly divided into two-step hydrogenation method and one-step hydrogenation method of furfural. In the...

Claims

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Application Information

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IPC IPC(8): C07D307/12B01J23/78
Inventor 徐杰杨艳良杜中田马继平马红高进
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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