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A kind of hydrogenation catalyst, preparation method and application thereof in the ring-opening preparation of phenylethyl alcohol by ethylene oxide

A technology of ethylene oxide and hydrogenation catalyst is applied in the field of perfume chemistry and fine chemicals, which can solve the problems of large amount of catalyst and solvent, unfavorable environmental protection, and high catalyst cost, and achieves low cost, reduced capacity, and reduced cost. The effect of production costs

Active Publication Date: 2022-07-12
SHANDONG NHU PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (1) Using precious metals as catalysts, the cost of catalysts is high;
[0011] (2) Using a supported nickel catalyst, the amount of catalyst and solvent used is large, which is not conducive to environmental protection;
[0012] (3) Many by-products are produced, the conversion rate of raw materials is low, and the yield of products is low

Method used

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  • A kind of hydrogenation catalyst, preparation method and application thereof in the ring-opening preparation of phenylethyl alcohol by ethylene oxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 A kind of preparation method of hydrogenation catalyst

[0047]Pulverize the nickel-chromium-aluminum alloy with Ni:Cr:Al=1:0.05:1.45, pulverize it to 50-60 mesh, and use 25% hydroxide containing 5 times the quality of sodium hydroxide of the nickel-chromium-aluminum alloy at 60°C. The sodium solution was stirred for 2 hours, washed with deionized water, and washed with deionized water 5 times the quality of the nickel-chromium-aluminum alloy until the pH of the washing water was 7 to obtain a Ni-Cr-Al catalyst, which was stored in water.

Embodiment 2

[0048] Embodiment 2 A kind of preparation method of hydrogenation catalyst

[0049] Pulverize the nickel-chromium-aluminum alloy with Ni:Cr:Al=1:0.06:0.94, pulverize it to 60-80 mesh, and use 30% hydroxide containing 6 times the quality of sodium hydroxide of the nickel-chromium-aluminum alloy at 80°C. The sodium solution was stirred for 2 hours, washed with deionized water, and washed with deionized water 5 times the quality of the nickel-chromium-aluminum alloy until the pH of the washing water was 7 to obtain a Ni-Cr-Al catalyst, which was stored in water.

Embodiment 3

[0050] Embodiment 3 A kind of preparation method of hydrogenation catalyst

[0051] Pulverize the nickel-chromium-aluminum alloy with Ni:Cr:Al=1:0.09:0.73, pulverize it to 80-100 mesh, and use 35% hydroxide containing 10 times the quality of sodium hydroxide of the nickel-chromium-aluminum alloy at 90°C. The sodium solution was stirred for 3 hours, washed with deionized water, and washed with deionized water 5 times the quality of the nickel-chromium-aluminum alloy until the pH of the washing water was 7 to obtain a Ni-Cr-Al catalyst, which was stored in water.

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PUM

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Abstract

The invention provides a hydrogenation catalyst. The catalyst is composed of three metals, Ni, Cr, and Al; the mass ratio of the Ni, Cr, and Al is 1:0.0083-0.33:0.5-2.32; the invention also provides a The invention discloses a preparation method of a hydrogenation catalyst and the application of a hydrogenation catalyst in the ring-opening preparation of phenylethyl alcohol from ethylene oxide. The hydrogenation catalyst of the present invention is a Ni-Cr-Al catalyst and does not contain precious metals; the hydrogenation catalyst of the present invention has high reactivity, selectivity and stability, and can be applied repeatedly; after the catalyst is applied 20 times, The yield is only reduced by 0.5-0.6%; and the amount of catalyst and solvent is small; the Ni-Cr-Al catalyst in the present invention is used as the catalyst for the ring-opening of ethylene oxide to prepare phenethyl alcohol, the reaction conditions are mild, and the conversion rate of raw materials is improved , Phenylethanol yield.

Description

technical field [0001] The invention relates to a hydrogenation catalyst and a preparation method, in particular to a Ni-Cr-Al composite metal catalyst and a preparation method thereof, and also relates to the use as a catalyst for catalyzing the hydrogenation and ring-opening of ethylene oxide to prepare phenethyl alcohol, which belongs to perfume chemistry and fine chemicals. Background technique [0002] Phenylethyl alcohol is an edible spice that is allowed to be used in my country. It is mainly used to prepare flavors such as honey, bread, peaches and berries. It can also be used to formulate rose-scented flower essential oils and various flower-flavored essences, almost all flower essential oils, and are widely used to formulate soap and cosmetic essences. In addition, various edible flavors can also be formulated. [0003] The hydrogenation and ring-opening of ethylene oxide is an important process route for the preparation of phenethyl alcohol. Now there are a var...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/86C07C29/132C07C33/22
CPCC07C29/132B01J23/866C07C33/22Y02P20/52
Inventor 马啸马书召赵文乐李文涛吕爱凝曹夕涛于明姜晓阳林波
Owner SHANDONG NHU PHARMA