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Allyl acetate catalyst and application thereof

A technology of allyl acetate and catalyst, applied in physical/chemical process catalyst, carboxylate preparation, organic compound/hydride/coordination complex catalyst, etc. higher question

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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 application thereof
  • Allyl acetate catalyst and application thereof
  • Allyl acetate catalyst and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of carrier: 0.58g of stannous hydroxide (Sn(OH) 2 ) powder and 1.0g of silica sol are fully mixed to obtain a coating solution, and the coating solution is evenly sprayed on 1.0L of spherical SiO with a diameter of 5.6mm 2 , dried at 100°C, and calcined at 500°C in a muffle furnace to obtain the catalyst carrier. The Sn content in the carrier was determined by ICP to be 0.45 g / L.

[0038] Catalyst preparation:

[0039] (1) Use sodium bicarbonate pH regulator and water as a solvent to prepare a pH of 1.06, containing 3.18gPd and 0.37gCu of chloropalladic acid and copper chloride aqueous solution to obtain 590ml of impregnating solution. impregnating it on the catalyst carrier in a rotating pan to obtain catalyst precursor I;

[0040] (2) After drying at 80°C, 105ml contains 21.5g Na 2 SiO 3 9H 2 The solution of O was fully mixed, and aged for 24h to obtain catalyst precursor II;

[0041] (3) With a solubility of 10% (in N 2 h 4 ·H 2 (2 in weight ratio...

Embodiment 2

[0049] Preparation of carrier: 0.66g of chromium trioxide (Cr 2 o 3 ) powder and 1.0g of silica sol are fully mixed to obtain a coating solution, and the coating solution is evenly sprayed on 1.0L of spherical SiO with a diameter of 5.6mm 2 , dried at 100°C, and calcined at 500°C in a muffle furnace to obtain the catalyst carrier. The Cr content in the carrier was determined to be 0.45 g / L by ICP.

[0050] Catalyst preparation:

[0051] (1) Use sodium bicarbonate pH regulator and water as a solvent to prepare a pH of 1.06, containing 3.18gPd and 0.37gCu of chloropalladic acid and copper chloride aqueous solution to obtain 590ml of impregnating solution. impregnating it on the catalyst carrier in a rotating pan to obtain catalyst precursor I;

[0052] (2) After drying at 80°C, 105ml contains 21.5g Na 2 SiO 3 9H 2 The solution of O was fully mixed, and aged for 24h to obtain catalyst precursor II;

[0053] (3) With a solubility of 10% (in N 2 h 4 ·H 2 (2 in weight rat...

Embodiment 3

[0100] Preparation of carrier: 0.15g of molybdenum trioxide (MoO 3 ) powder and 1.0g of silica sol are fully mixed to obtain a coating solution, and the coating solution is evenly sprayed on 1.0L of spherical SiO with a diameter of 5.6mm 2 , dried at 100°C, and calcined at 500°C in a muffle furnace to obtain the catalyst carrier. The Mo content in the carrier was determined to be 0.1 g / L by ICP.

[0101] Catalyst preparation:

[0102] (1) Use sodium bicarbonate pH regulator and water as a solvent to prepare a pH of 1.06, containing 3.18gPd and 0.37gCu of chloropalladic acid and copper chloride aqueous solution to obtain 590ml of impregnating solution. impregnating it on the catalyst carrier in a rotating pan to obtain catalyst precursor I;

[0103] (2) After drying at 80°C, 105ml contains 21.5g Na 2 SiO 3 9H 2 The solution of O was fully mixed, and aged for 24h to obtain catalyst precursor II;

[0104] (3) With a solubility of 10% (in N 2 h 4 ·H 2 (2 in weight ratio)...

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Abstract

The invention relates to an allyl acetate catalyst and an application thereof. The problems of poor activity and low selectivity of catalysts in the prior art are mainly solved in the invention. The catalyst comprises a carrier, an active component and a cocatalyst; the active component comprises metal Pd and metal Cu; the cocatalyst is alkali metal acetate; the carrier comprises a carrier substrate and a surface coating; the substrate is porous silica; the coating comprises a modified metal element and a silica binder for binding the modified metal element to the surface of the substrate; the content of the modified metal element is 0.1-1.00 g / L; and the modified metal element is selected from at least one of group IVA metal elements and group VIB metal elements. The allyl acetate catalyst well solves the problems, and can be used in industrial production of allyl acetate.

Description

technical field [0001] The invention relates to an allyl acetate catalyst, a preparation method of the catalyst and a synthesis method of allyl acetate. Background technique [0002] Allyl acetate is a colorless flammable liquid, slightly soluble in water, easily soluble in alcohol and ether, and soluble in acetone. As an important chemical raw material, it is mainly used in the production of propenyl alcohol and epichlorohydrin. [0003] In the 1980s, Japan’s Showa Denko and the former Soviet Academy of Sciences proposed the use of acetyl oxidation technology in the presence of palladium and co-catalysts to prepare allyl acetate in a 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 prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26B01J31/34C07C67/055C07C69/155
Inventor 杨运信查晓钟
Owner CHINA PETROLEUM & CHEM CORP
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