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Catalyst composition for allantoin preparation and preparation method of catalyst composition

A technology of catalyst and allantoin, which is applied in the field of allantoin preparation catalyst composition and its preparation, can solve the problems of polluting the environment, not very superior catalytic effect, and low allantoin yield

Inactive Publication Date: 2018-04-06
WUHU HUAHAI BIOLOGY ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing catalyst composition is generally inorganic strong acid, and inorganic strong acid can cause corrosion to equipment as catalyst composition on the one hand, can pollute environment simultaneously; Especially important is that the catalytic effect of inorganic strong acid catalyst composition is not very superior, causes allantoin Yields are generally low

Method used

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  • Catalyst composition for allantoin preparation and preparation method of catalyst composition
  • Catalyst composition for allantoin preparation and preparation method of catalyst composition
  • Catalyst composition for allantoin preparation and preparation method of catalyst composition

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preparation example Construction

[0017] The invention provides a method for preparing a catalyst composition for preparing allantoin, comprising:

[0018] 1) Hydrothermal reaction of molecular sieve, tetrabutyl titanate, cerium source, sodium tungstate, amino acid, ethanol and water to prepare modified molecular sieve;

[0019] 2) Soak the modified molecular sieve in acid solution to obtain active molecular sieve;

[0020] 3) Ball milling the active molecular sieve, alumina, diatomaceous earth, sodium dodecylbenzenesulfonate and rosin to prepare allantoin to prepare a catalyst composition.

[0021] In step 1) of the present invention, the amount of each material can be selected within a wide range, but in order to make the prepared catalyst composition have more excellent catalytic performance, preferably, in step 1), molecular sieve, titanic acid The weight ratio of tetrabutyl ester, cerium source, sodium tungstate, amino acid, ethanol and water is 10:1.2-1.5:0.2-0.4:0.2-0.5:0.08-0.12:5-8:10-15.

[0022] I...

Embodiment 1

[0032] 1) Molecular sieve, tetrabutyl titanate, cerium source (cerium oxide), sodium tungstate, amino acid, ethanol, water are subjected to hydrothermal reaction according to the weight ratio of 10:1.3:0.3:0.4:0.10:7:13 (reaction The temperature is 210°C, and the reaction time is 6h) to prepare modified molecular sieves;

[0033] 2) Soak the modified molecular sieve and acid solution (pH 5.8, hydrochloric acid aqueous solution) according to the weight ratio of 10:40 (soaking temperature is 40°C, soaking time is 20h) to prepare active molecular sieve;

[0034] 3) Active molecular sieve, alumina (particle size: 0.08mm), diatomaceous earth (particle size: 0.08mm), sodium dodecylbenzenesulfonate, and rosin are mixed according to the weight ratio of 10:1.8:0.5:0.7:8 Ball milling (the mass ratio of large balls to small balls is 3:1, the mass ratio of balls to materials is 20:1, the rotational speed is 2000 rpm, and the ball milling time is 50 min) is used to prepare allantoin and pr...

Embodiment 2

[0036] 1) Molecular sieve, tetrabutyl titanate, cerium source (or cerium nitrate), sodium tungstate, amino acid, ethanol, water are subjected to hydrothermal reaction according to the weight ratio of 10:1.2:0.2:0.2:0.08:5:10 ( The reaction temperature is 200°C, and the reaction time is 4h) to prepare modified molecular sieves;

[0037] 2) Soak the modified molecular sieve and acid solution (pH 5.5, phosphoric acid aqueous solution) in a weight ratio of 10:30 (soaking temperature is 30°C, soaking time is 12h) to prepare active molecular sieve;

[0038] 3) Active molecular sieve, alumina (particle size: 0.05mm), diatomaceous earth (particle size: 0.05mm), sodium dodecylbenzenesulfonate, and rosin are mixed according to the weight ratio of 10:1.5:0.2:0.5:5 Ball milling (the mass ratio of large balls to small balls is 3:0.8, the mass ratio of balls to materials is 20:0.8, the rotational speed is 1800 rpm, and the ball milling time is 40 min) is carried out to obtain allantoin and ...

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Abstract

The invention discloses catalyst composition for allantoin preparation and a preparation method of the catalyst composition. The preparation method comprises the steps as follows: 1) a molecular sieve, tetrabutyl titanate, a cerium source, sodium tungstate, amino acid, ethanol and water are subjected to a hydrothermal reaction, and a modified molecular sieve is prepared; 2) the modified molecularsieve is soaked in an acid solution and an active molecular sieve is prepared; 3) the active molecular sieve, aluminum oxide, diatomite, sodium dodecyl benzene sulfonate and rosin are subjected to ball milling, and the catalyst composition for allantoin preparation is prepared. The catalyst composition can efficiently catalyze synthesis of allantoin and has the advantages of being environmentallyfriendly and easy to recover, and besides, the preparation method has the advantages that the process is simple and raw materials are easy to obtain.

Description

technical field [0001] The invention relates to a catalyst composition, in particular to a catalyst composition for preparing allantoin and a preparation method thereof. Background technique [0002] Allantoin, English name Allantion, chemical name 1-ureidodiazolane-2,4-dione, is an important fine chemical product with a wide range of uses. Allantoin has physiological functions such as promoting the growth of skin epithelial cells, healing sores, relieving pain, and softening keratin. It is also non-toxic, non-irritating, non-allergic, has light-proof, bactericidal, anti-corrosion, and anti-oxidation effects, and can keep the skin hydrated. , Moisturizing and soft, so it is widely used in the production of medicine and cosmetics. In addition, allantoin also has the function of stimulating biological growth, and can be used as a plant growth regulator in agricultural production, with effects such as fruit strengthening, ripening, and yield increase. [0003] Natural allanto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34B01J37/00B01J37/02B01J37/10C07D233/88
CPCB01J31/34B01J37/0036B01J37/0201B01J37/10C07D233/88
Inventor 茆振斌
Owner WUHU HUAHAI BIOLOGY ENG
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