Copper-based low-temperature shift catalyst and preparation method thereof
A shift catalyst, low temperature technology, applied in the field of copper-based low temperature shift catalyst and preparation, can solve the problems of lower specific surface, unstable catalyst structure, easy loss of alkali metal, etc., and achieve the effect of stable performance
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Embodiment 1
[0029] Will Cu 2+ Cu(NO 3 ) 2 Solution 2L, Zn 2+ Zn(NO 3 ) 2 Solution 0.6L, configured in a neutralization tank as a mixed solution 1, heated to 70°C under stirring;
[0030] Dilute 100g of JA-25 silica sol to 400mL to form solution 2;
[0031] Add solution 2 into solution 1 and stir well to form solution 3;
[0032] Prepare Na in the alkali tank 2 CO 3 Alkaline solution, 0.1Kg of soda ash per liter of water is made into precipitant solution 4;
[0033] Solution 4 was added to solution 3, and the end point pH value was 7.8 to form slurry 1;
[0034] Weigh 50g of pseudo-boehmite, add 50g of magnesium oxide powder into slurry 1, and beat for 20min.
[0035] After the slurry I after beating is filtered, washed and dried, K is added 2 CO 3 10 g was ground and granulated, calcined at 450° C., added graphite and pressed into pellets to obtain the catalyst.
Embodiment 2
[0037] Will Cu 2+ Cu(NO 3 ) 2 Solution 4L, Zn 2+ Zn(NO 3 ) 2 Solution 1.6L, configured in a neutralization tank as a mixed solution 1, heated to 70°C under stirring;
[0038] Dilute 100g of JA-25 silica sol to 400mL to form solution 2;
[0039] Add solution 2 into solution 1 and stir well to form solution 3;
[0040] Prepare Na in the alkali tank 2 CO 3 Alkaline solution, 0.1Kg of soda ash per liter of water is made into precipitant solution 4;
[0041] Solution 4 was added to solution 3, and the end point pH value was 7.8 to form slurry 1;
[0042] Weigh 25g of magnesia-alumina spinel and add it into the slurry 1, beat for 20min.
[0043] After the beating slurry 1 was filtered, washed and dried, CaCO was added 3 10g, K 2 CO 3 10 g was ground and granulated, calcined at 500° C., added graphite and pressed into pellets to obtain the catalyst.
Embodiment 3
[0045] Will Cu 2+ Cu(NO 3 ) 2 Solution 2L, Zn 2+ Zn(NO 3 ) 2 Solution 0.5L, configured in a neutralization barrel to form a mixed solution 1, heated to 60°C under stirring;
[0046] Dilute 150g of JA-25 silica sol to 400mL to form solution 2;
[0047] Add solution 2 into solution 1 and stir well to form solution 3;
[0048] Prepare Na in the alkali tank 2 CO 3 Alkaline solution, 0.1Kg of soda ash per liter of water is made into precipitant solution 4;
[0049]Solution 4 was added to solution 3, and the end point pH value was 7.2 to form slurry 1;
[0050] Weigh 200g of pseudo-boehmite and 70g of magnesium oxide powder into the slurry 1, beat for 20min.
[0051] After the beating slurry 1 was filtered, washed and dried, CaCO was added 3 10 g was ground and granulated, calcined at 420° C., and graphite was added to form a tablet to obtain the catalyst.
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