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Method for producing acrolein and glycerin-containing composition

A production method and technology of acrolein, applied in the direction of organic chemical methods, carbon-based compound preparation, chemical instruments and methods, etc., can solve a large number of catalysts, the relationship between the yield of acrolein without specific disclosure of contact time, large-scale problems, etc.

Inactive Publication Date: 2013-01-30
NIPPON SHOKUBAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no specific disclosure of the relationship between the contact time and the yield of acrolein in this document
Furthermore, the relationship between the supply amount of glycerin and the reaction conditions is not disclosed at all, and even if acrolein is produced according to the supply amount and reaction conditions shown in the examples, the production efficiency of acrolein produced under these conditions is industrially insufficient. , therefore, in the case of adopting this condition, a large amount of catalyst and a large reaction apparatus are required

Method used

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  • Method for producing acrolein and glycerin-containing composition
  • Method for producing acrolein and glycerin-containing composition
  • Method for producing acrolein and glycerin-containing composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0090] Examples are shown below.

[0091] The methods for calculating the conversion rate of glycerin, the yield of acrolein, and the accumulated amount of carbon substances in Examples are as follows.

[0092] Conversion rate of glycerin, yield of acrolein:

[0093] The effluent from the reactor described below was qualitatively and quantitatively analyzed by gas chromatography (GC). The conversion rate and the yield of acrolein were calculated from the quantitative analysis results and the following formula (1) or (2).

[0094] Formula 1):

[0095]

[0096] Formula (2):

[0097]

[0098] The accumulation of carbon substances:

[0099] The amount of carbon substances attached to the catalyst after acrolein production was measured by thermogravimetric-differential thermal analysis (TG-DTA). In this TG-DTA, the catalyst was placed under air circulation, the temperature was raised from room temperature to 600° C. at 10° C. / min, and the temperature of 600° C. was maint...

preparation example A

[0104] 49 g of 85% by mass orthophosphoric acid was mixed in a solution of 160 g of aluminum nitrate nonahydrate and 800 g of ion-exchanged water. After dropping 96.7 g of 28% by mass ammonia water to this mixed solution over about 50 minutes (a white precipitate was formed from the beginning of the dropping), the mixed solution was stirred for 1 hour. Next, the solid matter (precipitate) separated from the mixed liquid by suction filtration was washed. The washing includes: after mixing the solid matter and 800 g of ion-exchanged water, stirring it for 1 hour, and then standing still for 1 hour, and then separating the solid content by suction filtration. The solid matter obtained by repeating the washing operation three times was dried overnight at 120° C. in an air atmosphere, and then fired at 1,200° C. for 3 hours in an air atmosphere. The obtained solid matter was crushed and classified into 0.7-1.4 mm to obtain catalyst A.

preparation example B

[0106] Dissolve 0.58g of NaOH in 15.00g of distilled water, then add 1.95g of NaAlO 2 (manufactured by Asada Chemical Industry Co., Ltd., purity: 86.8% by mass) was dissolved in distilled water, and 10.15 g of a 40% by mass aqueous solution of tetra-n-propylammonium hydroxide was added to the distilled water. Then, distilled water was added to this solution to prepare an impregnation solution with a total amount of 30 ml. Then, silicon beads ("Ciyaliakto Q-50" manufactured by Fuji Silysia Chemical Co., Ltd., 10-20 mesh, average pore diameter: 50 nm) were used as the silicon molded product, and 30 g of the silicon beads obtained by drying at 120° C. for 1 day were placed in the impregnating solution. Soak for 1 hour. Then, the silica beads were dried on an evaporating dish set on a water bath at 100°C, and then dried at 80°C under a nitrogen stream for 5 hours, thereby allowing the Na and Al crystallization agents required for crystallization to be supported on the silicon bea...

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Abstract

Disclosed is an environment-friendly method for producing acrolein with excellent efficiency, wherein catalyst life is long and energy consumption is low. Also disclosed is a glycerin-containing composition which can be suitably used in this method. Specifically disclosed is a method for producing acrolein, wherein a raw material gas containing a glycerin gas is brought into contact with a solid acid catalyst in a reaction chamber. In this method, the partial pressure of the glycerin gas in the raw material gas is set at 0.01-30 kPa. Also specifically disclosed is a glycerin-containing composition used in a method for producing acrolein using a solid catalyst, which contains a fatty acid and / or a fatty acid ester. The total mass of the fatty acid and the fatty acid ester is 0.001-5% by mass relative to the glycerin.

Description

technical field [0001] The present invention relates to a method for producing acrolein with excellent productivity by gas-phase reaction of glycerin using a solid acid catalyst, and a composition containing glycerin that can be suitably used in the method. Background technique [0002] Biodiesel produced from vegetable oil is attracting attention not only as an alternative fuel to fossil fuels but also because it emits less carbon dioxide, and an increase in demand is expected. Since glycerol is by-produced during the production of this biodiesel, it is necessary to effectively utilize this glycerin. One example of utilizing glycerin includes using glycerin as a raw material for producing acrolein. [0003] Acrolein is a useful compound used as a raw material of acrolein derivatives such as 1,3-propanediol, 1,2-propanediol, methionine, acrylic acid, 3-methylpropanal, and water-absorbent resins. JP-A-06-192147 discloses the production of 1,3-propanediol and 1,2-propanediol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/52C07C47/22C07B61/00
Inventor 有田佳生常木英昭春日洋人冈田雅希桐敷贤
Owner NIPPON SHOKUBAI CO LTD
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