Low carbon alkane dehydrogenation catalyst and preparation method thereof
A catalyst and propane dehydrogenation technology, which is applied in the direction of hydrocarbons, hydrocarbons, chemical instruments and methods, etc., can solve problems such as complexity and low commercial application potential, and achieve simple preparation methods, avoid active component aggregation, The effect of mature technology
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example 1
[0016] Weigh an alumina carrier (spherical, 1 mm in diameter, 0.73 cm in pore volume) containing a certain amount of Sn 3 / g, specific surface area 232m 2 / g, the carrier used in the following examples) 30g, deionized water was added dropwise to initial moistening, and the volume of consumed water was 27mL. Assuming that the Pt content accounts for 0.3wt% of the catalyst, weigh 0.09g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the volume to 27mL, add it to the above sample, age for 4h, dry at 80°C for 8h, and roast at 600°C for 4h . The sample obtained in the above steps is placed in a tubular heating furnace, heated to 400°C under a nitrogen atmosphere, and a mixed gas of methane, nitrogen, and oxygen is introduced, wherein the methane concentration is 15v%, the oxygen concentration is 3v%, and the volume space velocity of the mixed gas is 800h -1 , keep the temperature for 1h, after the end of the constant temperature, it will be cooled to...
example 2
[0019] Weigh an alumina carrier (spherical, 1 mm in diameter, 0.73 cm in pore volume) containing a certain amount of Sn 3 / g, specific surface area 232m 2 / g, the carrier used in the following examples) 30g, deionized water was added dropwise to initial moistening, and the volume of consumed water was 27mL. Assuming that the Pt content accounts for 0.2wt% of the catalyst, weigh 0.06g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the volume to 27mL, add it to the above sample, age for 2h, dry at 120°C for 4h, and roast at 500°C for 8h . The sample obtained in the above steps is placed in a tubular heating furnace, heated to 450°C under a nitrogen atmosphere, and a mixed gas of methane, nitrogen, and oxygen is introduced, wherein the concentration of methane is 10v%, the concentration of oxygen is 1v%, and the volumetric space velocity of the mixed gas is 1000h -1 , keep the temperature for 0.5h, after the end of the constant temperature, it wil...
example 3
[0021] Weigh an alumina carrier (spherical, 1 mm in diameter, 0.73 cm in pore volume) containing a certain amount of Sn 3 / g, specific surface area 232m 2 / g, the carrier used in the following examples) 30g, deionized water was added dropwise to initial moistening, and the volume of consumed water was 27mL. Based on the fact that the Pt content accounts for 0.4wt% of the catalyst, weigh 0.12g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the volume to 27mL, add it to the above sample, age for 8h, dry at 100°C for 6h, and roast at 700°C for 4h . The sample obtained in the above steps is placed in a tubular heating furnace, heated to 350°C under a nitrogen atmosphere, and a mixed gas of methane, nitrogen, and oxygen is introduced, wherein the concentration of methane is 20v%, the concentration of oxygen is 5v%, and the volume space velocity of the mixed gas is 500h -1 , keep the temperature for 2h, after the end of the constant temperature, it w...
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