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Allyl acetate catalyst and preparation method of allyl acetate catalyst

A technology of allyl acetate and catalyst, which can be used in catalyst activation/preparation, carboxylate preparation, chemical instruments and methods, etc., and can solve the problems of low activity and selectivity of allyl acetate catalyst.

Active Publication Date: 2015-03-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the low problem of allyl acetate catalyst activity and selectivity synthesized in the prior art

Method used

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  • Allyl acetate catalyst and preparation method of allyl acetate catalyst
  • Allyl acetate catalyst and preparation method of allyl acetate catalyst
  • Allyl acetate catalyst and preparation method of allyl acetate catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Preparation of carrier: Spray 350ml of 20g / L ethylamine aqueous solution evenly on 1.1L spherical SiO2 with a diameter of 5.6mm 2 On the carrier, obtain the carrier precursor A, then fix the beaker containing the carrier precursor A in a water-filled ultrasonic instrument, heat the water temperature to 45°C, adjust the ultrasonic frequency to 55MHz, and the power to 300w to maintain the water temperature and ultrasonic frequency vibration The carrier (X) was obtained by treating at low temperature for 2.0 h, then calcining at 500° C. for 5.0 h, and drying.

[0030] Catalyst preparation: pH 1.05, containing 3.50gPd and 0.40gCu, aqueous solution of chloropalladium acid and copper chloride was prepared with sodium bicarbonate pH adjuster and water as a solvent to obtain 590ml of impregnating solution. Fix the beaker with the carrier (X) in the ultrasonic instrument filled with water, heat the water temperature to 40°C, adjust the ultrasonic frequency to 35MHz, and the pow...

Embodiment 2

[0056] Preparation of carrier: Spray 350ml of 20g / L ethylenediamine aqueous solution evenly on 1.1L spherical SiO2 with a diameter of 5.6mm 2 On the carrier, obtain the carrier precursor A, then fix the beaker containing the carrier precursor A in a water-filled ultrasonic instrument, heat the water temperature to 45°C, adjust the ultrasonic frequency to 55MHz, and the power to 300w to maintain the water temperature and ultrasonic frequency vibration The carrier (X) was obtained by treating at low temperature for 2.0 h, then calcining at 500° C. for 5.0 h, and drying.

[0057] Catalyst preparation: pH 1.05, containing 3.50gPd and 0.40gCu, aqueous solution of chloropalladium acid and copper chloride was prepared with sodium bicarbonate pH adjuster and water as a solvent to obtain 590ml of impregnating solution. Fix the beaker with the carrier (X) in the ultrasonic instrument filled with water, heat the water temperature to 40°C, adjust the ultrasonic frequency to 35MHz, and the...

Embodiment 3

[0060] Preparation of carrier: Spray 350ml of 20g / L triethylamine ethanol solution evenly on 1.1L spherical SiO2 with a diameter of 5.6mm 2 On the carrier, obtain the carrier precursor A, then fix the beaker containing the carrier precursor A in a water-filled ultrasonic instrument, heat the water temperature to 45°C, adjust the ultrasonic frequency to 55MHz, and the power to 300w to maintain the water temperature and ultrasonic frequency vibration The carrier (X) was obtained by treating at low temperature for 2.0 h, then calcining at 500° C. for 5.0 h, and drying.

[0061]Catalyst preparation: pH 1.05, containing 3.50gPd and 0.40gCu, aqueous solution of chloropalladium acid and copper chloride was prepared with sodium bicarbonate pH adjuster and water as a solvent to obtain 590ml of impregnating solution. Fix the beaker with the carrier (X) in the ultrasonic instrument filled with water, heat the water temperature to 40°C, adjust the ultrasonic frequency to 35MHz, and the po...

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Abstract

The invention relates to an allyl acetate catalyst, a preparation method of the allyl acetate catalyst, and a synthesis method of allyl acetate, which mainly solve the problem that a catalyst is low in activity and selectivity in the prior art. According to the adopted technical scheme, the allyl acetate catalyst comprises a carrier, active components and a cocatalyst; active components comprise metal Pd and metal Cu; the cocatalyst is potassium acetate; the carrier is selected from at least one of the following oxides: SiO2 or Al2O3 which are subjected to ultrasonic treatment in the presence of organic amine, the problem is relatively well solved, and the allyl acetate catalyst and the preparation method of the allyl acetate catalyst can be used for industrial production of the allyl acetate.

Description

technical field [0001] The invention relates to an allyl acetate catalyst, a preparation method thereof, and a synthesis method of allyl acetate. Background technique [0002] In the reaction of preparing allyl acetate by fixed bed gas phase reaction using propylene, oxygen and acetic acid as raw materials, SiO 2 、Al 2 o 3 or SiO 2 and Al 2 o 3 The composed mixture is used as a carrier, loaded with Pd, Cu and potassium acetate, and the catalysts in which Pd and Cu are distributed in an eggshell shape are well known to those skilled in the art. The preparation method of the catalyst has been disclosed by US3,917,676 (titled: Process for producing ally acetate), that is, the mixture containing noble metal Pd and Cu is impregnated on the carrier, and after drying, the free Pd and Cu are solidified The active metal Pd and Cu are formed on the surface of the carrier, and then the catalyst is obtained after being treated with co-catalyst KOAc and dried. The catalyst obtaine...

Claims

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Application Information

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IPC IPC(8): B01J31/04B01J37/34C07C69/155C07C67/055
Inventor 查晓钟杨运信张丽斌
Owner CHINA PETROLEUM & CHEM CORP
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