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
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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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