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Bar shaped catalyst for preparing bio-based acrylic acid and molding method thereof

A bio-based acrylic acid and catalyst technology, applied in the chemical industry, can solve the problem of increasing the amount of catalyst, and achieve the effects of easy operation, reduced equipment investment and low production cost

Inactive Publication Date: 2009-06-24
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when entering the pilot test or industrial expansion production, the amount of catalyst is greatly increased

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Mix and knead 10g of Y molecular sieve raw powder with a silicon-aluminum ratio of 4.8, 0.6g of sodium carboxymethylcellulose, 3g of silica sol, and 5g of water, and knead them, age at 30°C for 5h, extrude, and dry at 90°C for 15h to obtain Strip-shaped Y molecular sieve catalyst.

[0026]Take 1g of the shaped Y molecular sieve catalyst (through 30 mesh sieve) and carry out catalytic dehydration reaction under the reaction conditions of temperature 350°C, lactic acid mass concentration 34wt%, raw material liquid flow rate 0.06ml / min, and carrier gas flow rate 30ml / min. The product of reaction 45-75min was taken for chromatographic analysis. The analysis results are shown in Table 1.

Embodiment 2

[0028] Mix and knead 10g of Y molecular sieve raw powder with a silicon-aluminum ratio of 4.8, 0.3g sodium carboxymethyl cellulose, 4.5g silica sol, and 10g water, and knead them, age at 35°C for 10h, extrude, and dry at 100°C for 8h. A strip-shaped Y molecular sieve catalyst was obtained.

[0029] 1g of the shaped Y molecular sieve catalyst (passed through a 30 mesh sieve) was subjected to a catalytic dehydration reaction under the reaction conditions of a temperature of 350° C., a mass concentration of lactic acid of 34 wt%, a flow rate of a raw material liquid of 0.05 ml / min, and a flow rate of a carrier gas of 30 ml / min. The product of reaction 45-75min was taken for chromatographic analysis. The analysis results are shown in Table 1.

Embodiment 3

[0031] Mix and knead 10g of Y molecular sieve raw powder with a silicon-aluminum ratio of 4.8, 0.1g sodium carboxymethylcellulose, 0.3g kaolin, and 8g water, and knead them, age at 30°C for 15 hours, extrude, and dry at 90°C for 15 hours to obtain Strip-shaped Y molecular sieve catalyst.

[0032] Take 1g of the shaped Y molecular sieve catalyst (passed through a 30 mesh sieve) at a temperature of 350°C, a mass concentration of lactic acid of 37.5wt%, a flow rate of the raw material solution of 0.05ml / min, and a carrier gas flow rate of 30ml / min for catalytic dehydration. The product of reaction 45-75min was taken for chromatographic analysis. The analysis results are shown in Table 1.

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Abstract

The invention discloses an extruded catalyst for producing acrylic acid by dehydrating biomass lactic acid and a molding method thereof. The catalyst mainly comprises Y molecular sieve raw powder, an adhesive, an extrusion aid and water, wherein the weight ratio of the Y molecular sieve raw powder to the adhesive is 2-50: 1, the weight ratio of the Y molecular sieve raw powder to the extrusion aid is 10-100: 1, the weight ratio of the water to the Y molecular sieve raw powder is 0.3-1: 1, and various raw materials are mixed evenly and then are orderly subjected to kneading, aging, extruded molding and drying to obtain the extruded catalyst. The catalyst has the advantages of simple components, low cost, high activity, good selectivity and high strength. In addition, the molding method for the catalyst is simple and easy to operate, and has low production cost and good industrialized prospect.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a strip-shaped catalyst for preparing bio-based acrylic acid and a molding method thereof. Background technique [0002] Acrylic acid and its esters are important organic chemical basic raw materials, among which acrylic acid is mainly used to produce super absorbent resin (SAP) and acrylates (such as methyl ester, ethyl ester and butyl ester, etc.), and acrylates are mainly used to produce water-soluble Coatings, adhesives, synthetic rubber and synthetic fibers, etc. Due to the excellent properties of acrylic acid and its esters, they are widely used in the fields of building materials, textiles, chemical fibers, sanitary products and oil exploration. The traditional acrylic acid industry is completely based on petrochemical industry, and acrylic acid is synthesized from petrochemical products as raw materials. Different from the petroleum route, the biological prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/08C07C57/065
Inventor 黄和汪洋卢进中余定华孙鹏谢毓胜顾铭燕李恒
Owner CHINA PETROLEUM & CHEM CORP
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