Catalyst for production of ethylene method vinyl acetate

A method of vinyl acetate and catalyst technology, which is applied in the direction of physical/chemical process catalysts, carboxylate preparation, metal/metal oxide/metal hydroxide catalysts, etc., and can solve the problems of low activity and selectivity of vinyl acetate catalysts, Achieve the effect of improving activity and stability, improving yield and selectivity

Active Publication Date: 2017-04-26
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • 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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalyst for production of ethylene method vinyl acetate
  • Catalyst for production of ethylene method vinyl acetate
  • Catalyst for production of ethylene method vinyl acetate

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] [Example 1]

[0031] Preparation of catalyst:

[0032] (1) with sodium bicarbonate pH value regulator and water as solvent preparation pH is 1.09, containing the chloropalladium acid of 3.85gPd and 1.87gAu, chloroauric acid aqueous solution, obtain dipping solution 500ml, in the rotating pot, it is dipped in the carrier 1.0L spherical SiO with a diameter of 5.6mm 2 Catalyst precursor I is obtained on the carrier;

[0033] (2) After drying at 80°C, 98ml contains 20.5g Na 2 SiO 3 ·9H 2 The solution of O was fully mixed and aged for 24h to obtain catalyst precursor II;

[0034] (3) with a solubility of 12% (in N 2 H 4 ·H 2 (0 weight ratio) is 500ml of hydrazine hydrate for reduction, washed with water until there is no chloride ion, and dried at 90 ° C to obtain catalyst precursor III;

[0035] (4) Cobalt acetate (Co(OA) containing 1.27g CoC ) 2 ·4H 2 O) 150ml of aqueous solution was impregnated on precursor III, vacuum-dried at 110°C, and calcined at 400°C to o...

Example Embodiment

[0041] [Example 2]

[0042] Preparation of catalyst:

[0043] (1) with sodium bicarbonate pH value regulator and water as solvent preparation pH is 1.09, containing the chloropalladium acid of 3.85gPd and 1.87gAu, chloroauric acid aqueous solution, obtain dipping solution 500ml, in the rotating pot, it is dipped in the carrier 1.0L spherical SiO with a diameter of 5.6mm 2 Catalyst precursor I is obtained on the carrier;

[0044] (2) After drying at 80°C, 98ml contains 20.5g Na 2 SiO 3 ·9H 2 The solution of O was fully mixed and aged for 24h to obtain catalyst precursor II;

[0045] (3) with a solubility of 12% (in N 2 H 4 ·H 2 (0 weight ratio) is 500ml of hydrazine hydrate for reduction, washed with water until there is no chloride ion, and dried at 90 ° C to obtain catalyst precursor III;

[0046] (4) stannous chloride (SnCl) containing 1.27g Sn 2 ·2H 2 O) 150ml of aqueous solution was impregnated on precursor III, vacuum-dried at 110°C, and calcined at 400°C to ob...

Example Embodiment

[0064] [Example 3]

[0065] Preparation of catalyst:

[0066] (1) with sodium bicarbonate pH value regulator and water as solvent preparation pH is 1.09, containing the chloropalladium acid of 3.85gPd and 1.87gAu, chloroauric acid aqueous solution, obtain dipping solution 500ml, in the rotating pot, it is dipped in the carrier 1.0L spherical Al with a diameter of 5.6mm 2 O 3 Catalyst precursor I is obtained on the carrier;

[0067] (2) After drying at 80°C, 98ml contains 20.5g Na 2 SiO 3 ·9H 2 The solution of O was fully mixed and aged for 24h to obtain catalyst precursor II;

[0068] (3) with a solubility of 12% (in N 2 H 4 ·H 2 (0 weight ratio) is 500ml of hydrazine hydrate for reduction, washed with water until there is no chloride ion, and dried at 90 ° C to obtain catalyst precursor III;

[0069] (4) Cobalt nitrate (Co(NO) containing 1.27g Co 3 ) 2 ·6H 2 O) 150ml of aqueous solution was impregnated on precursor III, vacuum-dried at 110°C, and calcined at 400°...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to a catalyst for production of ethylene method vinyl acetate. A purpose of the present invention is mainly to solve the problems of not high activity and not high selectivity of the catalyst in the prior art. The technical scheme of the present invention comprises that the catalyst comprises a carrier, an active component and a co-catalyst, wherein the carrier is SiO2, Al2O3 or a mixture thereof, the co-catalyst is an alkali metal acetate, and the active component comprises a metal Pd, a metal Au and at least one metal element selected from an iron-based metal and a IVA metal. With the technical scheme, the problems in the prior art are well solved. The catalyst of the present invention can be used in the industrial production of vinyl acetate.

Description

technical field [0001] The invention relates to a catalyst used for preparing ethylene-method vinyl acetate, a preparation method of the catalyst and a synthesis method of ethylene-method vinyl acetate. Background technique [0002] Vinyl acetate (VAc) is one of the 50 largest chemical raw materials in the world. Polyvinyl alcohol (PVA), polyvinyl acetate (PVAc) emulsion, and vinyl acetate-ethylene copolymer emulsion can be produced by self-polymerization or copolymerization with other monomers. (VAE) or copolymer resin (EVA), vinyl acetate-vinyl chloride copolymer (EVC) and other derivatives. These derivatives are widely used in adhesives, architectural coatings, sizing agents for paper or fabrics, coatings, inks, leather processing, fiber processing, emulsifiers, water-soluble films, and soil conditioners. The main method of producing ethylene vinyl acetate in the world today is to use ethylene, oxygen and acetic acid as raw materials, and use Pd-Au-KOAc / SiO 2 The system...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J31/28C07C67/055C07C69/15
CPCB01J23/14B01J23/44B01J23/52B01J23/745B01J23/75B01J23/755B01J31/0201B01J31/28B01J35/0006C07C67/055C07C69/15
Inventor 查晓钟杨运信
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap