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Supported catalyst for preparing furfuryl alcohol through furfural catalytic hydrogenation, preparation method and applications thereof

A supported catalyst, catalytic hydrogenation technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc. Stability, easy inactivation and other problems, to achieve the effect of simple preparation process, improved anti-carbonization ability, and easy operation

Active Publication Date: 2020-03-10
淄博张店东方化学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the prior art that the preparation method of furfural alcohol by furfural liquid-phase hydrogenation is complicated, the activity and selectivity are unstable, and easy to deactivate, the present invention proposes a supported catalyst for preparing furfuryl alcohol by catalytic hydrogenation of furfural

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of spray purified clay:

[0037]Dissolve clay in water to form a clay suspension with a weight concentration of 5%. Stir at room temperature for 8 hours and then let it stand. Take the supernatant and filter it twice with a 600-mesh filter cloth, then spray dry. 110°C, atomizer rotation speed 12000rpm, the obtained powder was high-energy ball milled (German Retsch (RETSCH) PM400 planetary high-energy ball mill, using the forward and reverse alternating mode during the grinding process, using 250mL tungsten carbide tank, 10mm tungsten carbide grinding ball 100, the grinding speed is 300 rpm, and the grinding time is 15 hours.) After passing through a 400 mesh sieve, the spray purified clay is obtained, and its specific surface area is 690.8m 2 / g (testing instrument: Micromeritic TriStarII 3020 automatic specific surface and porosity analyzer from Micromeritic Company of the United States, the specific surface area is obtained by N2 adsorption-BET equation). ...

Embodiment 2～5

[0043] The difference from Example 1 lies in the load of clay, and the results are shown in Table 1.

Embodiment 6

[0045] The difference from Example 1 is that the spray acidified clay is used instead of the spray purified clay in Example 1, and the other steps are the same.

[0046] Preparation of spray acidified clay:

[0047] The spray-purified clay prepared in Example 1 is configured into a spray-purified clay suspension, wherein the weight fraction of the spray-purified clay in the clay suspension is 2.0% based on the weight of the clay suspension as 100 percent; Add hydrochloric acid to make the hydrogen ion concentration 2mol / L, process temperature 60°C, process time 3h, then spray dry, air inlet temperature 300°C, air outlet temperature 110°C, atomizer speed 12000rpm, the obtained powder is passed through high-energy ball milling 400 mesh sieve to get spray acidified clay. The specific surface area of ​​the spray acidified clay was measured to be 813.6m 2 / g.

[0048] Preparation and Application of Supported Catalyst

[0049] The difference from Example 1 is that the acidified ...

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Abstract

The invention relates to a supported catalyst for preparing furfuryl alcohol through furfural catalytic hydrogenation, a preparation method and applications thereof, and belongs to the field of sugaralcohol production and preparation. The supported catalyst comprises an active component and a carrier, wherein the active component is supported on the carrier, the particle size of the supported catalyst is less than 100 [mu]m, the active component comprises copper oxide, chromium oxide and aluminum oxide, the carrier is spray modified clay, a molar ratio of copper oxide to chromium oxide is 1.8-2.4:1, a molar ratio of copper oxide to aluminum oxide is 2-6:1, and the use amount of the spray modified clay is 5-55% of the total weight of the catalyst. The catalyst prepared by the method provided by the invention is good in dispersion, high in activity, selectivity and stability, simple in method, easy to operate, good in catalyst performance repeatability, and easy to realize industrial scale-up application.

Description

technical field [0001] The invention relates to the field of production and preparation of sugar alcohols, and more particularly, relates to a supported catalyst for preparing furfuryl alcohol by catalytic hydrogenation of furfural, a preparation method and application thereof. Background technique [0002] Furfuryl alcohol is an important chemical and light industry raw material, usually prepared by catalytic hydrogenation of furfural. The furfural molecule contains active aldehyde groups and there is a carbon-carbon double bond on the furan ring, which determines that its hydrogenation reaction is mainly the carbon-oxygen double bond in the aldehyde group and the hydrogenation saturation of the carbon-carbon double bond on the furan ring to form Furfuryl alcohol or tetrahydrofuran derivatives. In addition, due to the influence of the adjacent furan ring, the carbon-oxygen bond on the side chain of furfuryl alcohol is easily broken and hydrogenated to generate 2-methylfura...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/86C07D307/44
CPCB01J23/002B01J23/868C07D307/44B01J2523/00B01J35/61B01J2523/67B01J2523/17B01J2523/31Y02P20/584
Inventor 吴晓辉张志辉翟军王宝庆
Owner 淄博张店东方化学股份有限公司