High active and high stable catalyst of ferro manganese Fischer-Tropsch synthesis and preparation method
A high stability, catalyst technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, hydrocarbon production from carbon oxides, etc., can solve problems that are not conducive to the separation of catalysts and waxes, and the spherical shape of catalysts Poor, expensive and other problems, to achieve the effect of improving activity and selectivity, increasing strength and reducing production cost
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Embodiment 1
[0027] Weigh 10 kg Fe(NO 3 ) 3 9H 2 O, 624 grams of 50wt% Mn (NO 3 ) 2 solution, 1.47 kg Ca(NO 3 ) 2 4H 2 O and 693 g SiO 2 Acidic silica sol with a content of 30wt% is dissolved in deionized water to make a solution with a total metal ion concentration of 1.0 mol / liter, which is co-precipitated with 3.0 mol / liter of ammonia at 55°C and a pH of 10.5. After the precipitate was washed and filtered, 17.5 kg of filter cake (solid content: 15.3 wt%) was obtained, and 74 g of potassium carbonate and 2.0 kg of deionized water were added to the filter cake for beating to obtain a catalyst slurry with a solid content of 13.7 wt%. The above slurry was centrifugally spray-dried under the condition that the air inlet temperature was 270°C and the outlet air temperature was 95°C, and the obtained dried microspheres were calcined at 450°C for 6 hours to remember the finished catalyst. The ratio of active components of the catalyst is: 100Fe / 7 Mn / 18 Ca / 3 K / 15 SiO 2 , its main techni...
Embodiment 2
[0029] Weigh 10 kg Fe(NO 3 ) 3 9H 2 O, 4.0 kg containing Mn(NO 3 ) 2 For a 50wt% solution, 410 grams of Ca(NO 3 ) 2 4H 2 O and 1.21 kg SiO 2 Acidic silica sol with a content of 40wt% is dissolved in deionized water to make a solution with a total metal ion concentration of 4.5 mol / liter, and the solution is co-precipitated with 0.5 mol / liter of ammonia at 95 ° C and a pH of 7.7. After washing and filtering the precipitate, 8.25 kilograms of filter cake (solid content: 41.9wt%) were obtained, and 178 grams of potassium bicarbonate and 2.0 kilograms of deionized water were added to the filter cake for beating to obtain a catalyst slurry with a solid content of 33.7wt%. . The above-mentioned slurry was centrifugally spray-dried under the condition that the air inlet temperature was 230°C and the outlet air temperature was 115°C, and the obtained dried microspheres were calcined at 370°C for 7 hours to remember the finished catalyst. The ratio of active components of the ...
Embodiment 3
[0031] Weigh 10 kg Fe(NO 3 ) 3 9H 2 O, 1.07 kg of 50wt% Mn(NO 3 ) 2 Solution, 982 g Ca(NO 3 ) 2 4H 2 O and 1.85 kg SiO 2 Acidic silica sol with a content of 15wt% was dissolved in deionized water to make a solution with a total metal ion concentration of 2.0 mol / liter, and the solution was co-precipitated with 1.0 mol / liter of ammonia at 80°C and a pH of 8.5. After the precipitate was washed and filtered, 7.52 kg of filter cake (solid content: 36.3 wt%) was obtained. 140 g of potassium acetate and 3.0 kg of deionized water were added to the filter cake for beating to obtain a catalyst slurry with a solid content of 25.9 wt%. The above slurry was centrifugally spray-dried under the condition that the air inlet temperature was 250°C and the outlet air temperature was 100°C, and the obtained dried microspheres were calcined at 500°C for 5 hours to remember the finished catalyst. The ratio of active components of the catalyst is: 100 Fe / 12 Mn / 12 Ca / 4 K / 20 SiO 2 , its main...
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