Unlock instant, AI-driven research and patent intelligence for your innovation.

Synthetic method of acrylic acid

A synthesis method and technology of acrylic acid, applied in chemical instruments and methods, preparation of carboxylate, preparation of organic compounds, etc., can solve the problems of low yield of acrylic acid and low conversion rate of acrolein, etc.

Inactive Publication Date: 2019-12-20
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of low conversion rate of acrolein and low yield of acrylic acid in existing catalysts, and provides a new method for synthesizing acrylic acid. The catalyst has the characteristics of high conversion rate of acrolein and high yield of acrylic acid

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
  • Synthetic method of acrylic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] 1. Preparation of active element solution

[0071] Ammonium metavanadate (molecular formula: NH 4 VO 3 ) was dissolved in 200g of hot water at 80°C. Ammonium molybdate (molecular formula is: (NH 4 ) 2 MoO 4 ) into it, and then add ammonium tungstate containing 0.04 moles of W (molecular formula: (NH 4 ) 10 W 12 o 41 ), containing 0.04 moles of Cr ammonium chromate (molecular formula: (NH 4 ) 2 CrO 4 ), technetium heptoxide containing 0.04 moles of Tc (molecular formula: Tc 2 o 7 ), containing 0.04 moles of Na sodium nitrate (molecular formula is NaNO 3 ), stirred to make it all dissolve to obtain solution I. The niobium oxalate (molecular formula is: (NH 4 ) 3 NbO(C 2 o 4 ) 3 ) aqueous solution was added to the above solution respectively, mixed evenly, and evaporated at 80°C to the solution containing the active component VMo 4 Nb 0.4 W 0.4 Cr 0.4 Tc 0.4 Na 0.4 o g The concentration of 0.4g / g, to obtain solution II.

[0072] 2. Loading of act...

Embodiment 2

[0081] 1. Preparation of active element solution

[0082] Ammonium metavanadate (molecular formula: NH 4 VO 3 ) was dissolved in 200g of hot water at 80°C. Ammonium molybdate (molecular formula is: (NH 4 ) 2 MoO 4 ) into it, and then add ammonium tungstate containing 0.04 moles of W (molecular formula: (NH 4 ) 10 W 12 o 41 ), containing 0.04 moles of Cr ammonium chromate (molecular formula: (NH 4 ) 2 CrO 4 ), rhenium heptoxide containing 0.04 moles of Re (molecular formula: Re 2 o 7 ), containing 0.04 moles of Na sodium nitrate (molecular formula is NaNO 3 ), stirred to make it all dissolve to obtain solution I. The niobium oxalate (molecular formula is: (NH 4 ) 3 NbO(C 2 o 4 ) 3 ) aqueous solution was added to the above solution respectively, mixed evenly, and evaporated at 80°C to the solution containing the active component VMo 4 Nb 0.4 W 0.4 Cr 0.4 Re 0.4 Na 0.4 o g The concentration of 0.4g / g, to obtain solution II.

[0083] 2. Loading of active...

Embodiment 3

[0092] 1. Preparation of active element solution

[0093] Ammonium metavanadate (molecular formula: NH 4 VO3 ) was dissolved in 200g of hot water at 80°C. Ammonium molybdate (molecular formula is: (NH 4 ) 2 MoO 4 ) into it, and then add ammonium tungstate containing 0.04 moles of W (molecular formula: (NH 4 ) 10 W 12 o 41 ), containing 0.04 moles of Cr ammonium chromate (molecular formula: (NH 4 ) 2 CrO 4 ), manganese nitrate containing 0.04 moles of Mn (molecular formula: Mn(NO 3 ) 2 ), containing 0.04 moles of Na sodium nitrate (molecular formula is NaNO 3 ), stirred to make it all dissolve to obtain solution I. The niobium oxalate (molecular formula is: (NH 4 ) 3 NbO(C 2 o 4 ) 3 ) aqueous solution was added to the above solution respectively, mixed evenly, and evaporated at 80°C to the solution containing the active component VMo 4 Nb 0.4 W 0.4 Cr 0.4 mn 0.4 Na 0.4 o g The concentration of 0.4g / g, to obtain solution II.

[0094] 2. Loading of activ...

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 invention relates to a synthetic method of acrylic acid. The synthetic method mainly solves the problems of low conversion rate of acrolein and low yield of acrylic acid of an existing catalyst. According to the technical scheme, the synthetic method of the acrylic acid comprises the steps that under the existence of a catalyst, acrolein reacts with oxidizing gas containing oxygen to obtain acrylic acid, wherein the catalyst includes a carrier and an active component supported on the carrier, a general formula of the active component is expressed as VMoNbW<c>X<d>Y<e>Z<f>O<g>, whereinX comprises one or more of Sc, Ti, Y, Zr, Hf, Ta and Cr, Y includes at least one of Ga, Ge, In, Sn, TI, Pb, Cd, Mn, Tc, Re, Rh, Ir, Pd, Pt, Ag, Au and La, and Z is one or more of alkali metal and alkaline earth metal. The technical problems are well solved, and the synthetic method can be used in the industrial production of acrylic acid.

Description

technical field [0001] The present invention relates to the synthetic method of acrylic acid. Background technique [0002] Acrolein is the simplest unsaturated aldehyde and is an important intermediate in chemical synthesis. It is widely used in the synthesis of important chemical products such as picoline, pyridine, glutaraldehyde and acrylic acid. Acrylic acid is an important organic chemical raw material. It is mainly used to manufacture multifunctional polymer materials such as acrylates, and is widely used in papermaking, leather, coatings, textiles, plastics, rubber, oil additives, and oil exploration. In recent years, the market demand for acrylic acid has been increasing worldwide, and the production of acrylic acid has always been a research hotspot. [0003] At present, the synthesis of acrylic acid through the oxidation of acrolein has been used on a large scale in industry. The catalysts used in the synthesis of acrylic acid by the oxidation of acrolein are ge...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/235C07C57/055B01J23/32B01J23/34B01J23/36
CPCB01J23/002B01J23/32B01J23/34B01J23/36B01J2523/00C07C51/235C07C57/04B01J2523/55B01J2523/56B01J2523/67B01J2523/68B01J2523/69B01J2523/72B01J2523/73B01J2523/12B01J2523/74B01J2523/3706
Inventor 王伟华宋卫林徐文杰杨斌汪国军
Owner CHINA PETROLEUM & CHEM CORP