Acrylic acid catalyst and synthesis method of acrylic acid

A catalyst, acrylic technology, used in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of poor stability and low selectivity, and achieve molding handy effect

Active Publication Date: 2015-09-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented catalyst works well on converting propionaldehyde into acrylate with high yields (>99%). It also allows for easy production by forming it under specific conditions such as temperatures between 200°F - 180 °C or residence times within this range. Additionally, its strong structure makes it resistant against attrition during use over several thousand hours without losing their ability to function properly.

Problems solved by technology

This patented technical problem addressed in this patents relates to finding ways to enhance or maintain the properties (activity) and lifetimes of molybdenum vanadium complex oxides used in various applications like producing alpha-, beta -unsaturated alcohols and acrotic esters.

Method used

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  • Acrylic acid catalyst and synthesis method of acrylic acid
  • Acrylic acid catalyst and synthesis method of acrylic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] 1. Catalyst preparation

[0085] a) 500 grams of ammonium heptamolybdate (NH 4 ) 6 Mo 7 o 24 4H 2 O and 13.3 grams of KOH were added to 500 grams of warm water at 70°C, and stirred to make them all dissolve to form material I;

[0086] b) Add 123.5 grams of ammonium metavanadate NH to 250 grams of water 4 VO 3 forming material II;

[0087] c) 52.1 grams of antimony trioxide Sb 2 o 3 Add 100 grams of 70 ℃ hot water, stir and dissolve, then add 171 grams of copper nitrate Cu(NO 3 ) 2 ·3H 2 O, 82 grams of lanthanum nitrate La (NO 3 ) 2 .6H 2 O, 82 grams of cerium nitrate Ce (NO 3 ) 2 .6H 2 O and 95.3 grams of ammonium tungstate stirring and dissolving make material III;

[0088] d) adding materials II and III dropwise to material I successively under rapid stirring to form a catalyst slurry, and stirring and aging at 100° C. for 3 hours;

[0089] e) the slurry is spray-dried to obtain the catalyst precursor 1;

[0090] f) pre-calcining the catalyst prec...

Embodiment 2

[0096] 1. Catalyst preparation

[0097] a) 500 grams of ammonium heptamolybdate (NH 4 ) 6 Mo 7 o 24 4H 2 O and 13.3 grams of KOH were added to 500 grams of warm water at 70°C, and stirred to make them all dissolve to form material I;

[0098] b) Add 123.5 grams of ammonium metavanadate NH to 250 grams of water 4 VO 3 forming material II;

[0099] c) 52.1 grams of antimony trioxide Sb 2 o 3 Add 100 grams of 70 ℃ hot water, stir and dissolve, then add 171 grams of copper nitrate Cu(NO 3 ) 2 ·3H 2 O, 82 grams of lanthanum nitrate La (NO 3 ) 2 .6H 2 O, 82 grams of praseodymium nitrate Pr (NO 3 ) 2 .6H 2 O and 95.3 grams of ammonium tungstate stirring and dissolving make material III;

[0100] d) adding materials II and III dropwise to material I successively under rapid stirring to form a catalyst slurry, and stirring and aging at 100° C. for 3 hours;

[0101] e) the slurry is spray-dried to obtain the catalyst precursor 1;

[0102] f) pre-calcining the catalys...

Embodiment 3

[0108] 1. Catalyst preparation

[0109] a) 500 grams of ammonium heptamolybdate (NH 4 ) 6 Mo 7 o 24 4H 2 O and 13.3 grams of KOH were added to 500 grams of warm water at 70°C, and stirred to make them all dissolve to form material I;

[0110] b) Add 123.5 grams of ammonium metavanadate NH to 250 grams of water 4 VO 3 forming material II;

[0111] c) 52.1 grams of antimony trioxide Sb 2 o 3 Add 100 grams of 70 ℃ hot water, stir and dissolve, then add 171 grams of copper nitrate Cu(NO 3 ) 2 ·3H 2 O, 82 grams of praseodymium nitrate Pr (NO 3 ) 2 .6H 2 O, 82 grams of cerium nitrate Ce (NO 3 ) 2 .6H 2 O and 95.3 grams of ammonium tungstate stirring and dissolving make material III;

[0112] d) adding materials II and III dropwise to material I successively under rapid stirring to form a catalyst slurry, and stirring and aging at 100° C. for 3 hours;

[0113] e) the slurry is spray-dried to obtain the catalyst precursor 1;

[0114] f) pre-calcining the catalyst pre...

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Abstract

The invention relates to a catalyst for preparing acrylic acid by oxidation of acrylic aldehyde, a preparation method of the catalyst, and a synthesis method of acrylic acid, and is used for mainly solving the problem of not high selectivity of an acrylic acid catalyst in the prior art. The technical problem is better solved through adopting the technical scheme that the acrylic acid catalyst contains an active component represented by the following general formula of Mo12VaCubXcYdZeKfOj, wherein X is at least one selected from W, Cr and Sn, Y is at least one selected from Fe, Bi, Co, Ni, Sb, Zr and Sr, and Z is at least one selected from lanthanide elements. The acrylic acid catalyst can be used in industrial production of acrylic aldehyde oxidation production of acrylic acid.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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