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Catalyst for preparing hydroxyl-terminated aldehyde through hydroformylation of epoxyalkane, and preparation method and application thereof

A technology for alkylene oxide hydroformylation and hydroxyl-terminated aldehydes, which is applied in the field of catalysts and preparations for preparing hydroxyl-terminated aldehydes by hydroformylation of alkylene oxides, and can solve the problems of large equipment investment and operating costs, and bulky reactors , to achieve high raw material utilization, good catalyst activity, and improved selectivity

Inactive Publication Date: 2017-06-20
SHANGHAI HUAYI ENERGY CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the yield of 3-hydroxypropionaldehyde, the concentration of 3-hydroxypropionaldehyde has to be controlled at a lower level, which leads to a huge reactor volume when large-scale production, or adopts multiple reactors in parallel, which requires equipment investment and operation Expensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] A 500ml stainless steel autoclave with stirring was filled with N 2 After purging, add 236ml hexane, 48ml tetrahydrofuran, 0.73g dicobalt trioxide, 0.15g sodium thiosulfate pentahydrate, 0.15g octacarbonyl dicobalt and 3.9g deionized water, and use H 2 After replacement 3 times, fill it with 1:1 synthesis gas (hydrogen and carbon monoxide) until the pressure in the kettle is 5MPa, raise the temperature to 100°C, adjust the inlet pressure of the synthesis gas to 7MPa through the pressure reducing valve, and continue to fill the reactor with Synthetic gas, after the pressure in the kettle is balanced with the outlet pressure of the pressure reducing valve, the temperature is raised to 100°C and kept for 100 minutes, and the conversion rate of the cobalt precursor is calculated by the cumulative flow rate of the gas mass flowmeter to be 95%.

[0055] The reactor was cooled to 85°C, and the 2 After supplementing the pressure to 10MPa, switch to 1:1 synthesis gas (hydrogen ...

Embodiment 2

[0057] A 500ml stainless steel autoclave with stirring was filled with N 2 After purging, add 236ml hexane, 48.ml tetrahydrofuran, 0.82g cobalt hydroxide, 0.06g sodium thiosulfate pentahydrate, 0.075g octacarbonyl dicobalt and 3.9g deionized water, and use H 2 After replacement 3 times, fill it with 1:1 synthesis gas (hydrogen and carbon monoxide) until the pressure in the kettle is 5MPa, raise the temperature to 100°C, adjust the inlet pressure of the synthesis gas to 7MPa through the pressure reducing valve, and continue to fill the reactor with Synthetic gas, after the pressure in the kettle is balanced with the outlet pressure of the pressure reducing valve, the temperature is raised to 120°C and maintained for 100 minutes, and the conversion rate of the cobalt precursor is greater than 98% calculated by the cumulative flow rate of the gas mass flow meter.

[0058] Cool the reaction kettle to 85°C, inject 30ml of tetrahydrofuran solution with 0.15g of hydroquinone dissolve...

Embodiment 3

[0060] A 500ml stainless steel autoclave with stirring was filled with N 2 After purging, add 236ml hexane, 48.ml tetrahydrofuran, 1.56g anhydrous cobalt acetate, 0.03g sodium sulfide, 0.075g octacarbonyl dicobalt and 3.9g deionized water, and use H 2 After replacement 3 times, fill it with 1:1 synthesis gas (hydrogen and carbon monoxide) until the pressure in the kettle is 5MPa, raise the temperature to 90°C, adjust the inlet pressure of the synthesis gas to 10MPa through the pressure reducing valve, and continue to fill the reactor with Synthetic gas, after the pressure in the kettle is balanced with the outlet pressure of the pressure reducing valve, the temperature is raised to 100°C and maintained for 100 minutes, and the conversion rate of the cobalt precursor is greater than 98% calculated by the cumulative flow rate of the gas mass flow meter.

[0061] Cool the reaction kettle to 85°C, inject 30ml of tetrahydrofuran solution with 0.15g of hydroquinone dissolved therein...

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Abstract

The invention discloses a catalyst for preparing hydroxyl-terminated aldehyde through hydroformylation of epoxyalkane, and a preparation method and application thereof. According to the preparation method, a cobalt precursor reacts with synthetic gas under the action of a sulfur-containing auxiliary agent so as to obtain a crude catalyst product. The catalyst provided by the invention is applied to preparation of hydroxyl-terminated aldehyde through hydroformylation of epoxyalkane and can inhibit yield reduction caused by hydrogenation of aldehyde, so heavy components by-produced in aldol condensation are reduced, and selectivity of 3-hydroxypropionaldehyde.

Description

technical field [0001] The invention relates to a catalyst and its preparation method and application, in particular to a catalyst for preparing hydroxyl-terminated aldehyde by hydroformylation of alkylene oxide, its preparation method and application. Background technique [0002] 3-Hydroxypropanal is an effective antibacterial agent, which can be used in food preservation and auxiliary treatment in the medical field. As a chemical intermediate, 3-hydroxypropionaldehyde can be further oxidized to produce monomers such as acrylic acid and acrylate, and it can also be polymerized to produce some polymer derivatives and resins. The most interesting application of 3-hydroxypropionaldehyde is further hydrogenation to generate 1,3-propanediol, which can be used to synthesize polyester materials with excellent properties—polytrimethylene terephthalate (PTT). [0003] At present, the synthesis of 3-hydroxypropionaldehyde mainly consists of the following methods: ethylene oxide hyd...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/20C07C45/50C07C47/19
CPCB01J31/20B01J2231/321B01J2531/845C07C45/50C07C47/19
Inventor 刘文艳李俊岭崔伟张旭红张华焦国柱王培新周志宏唐斌
Owner SHANGHAI HUAYI ENERGY CHEM
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