A kind of dehydrogenation catalyst with silica as carrier and preparation method thereof
A dehydrogenation catalyst, catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of reducing catalyst activity stability and product selectivity, etc. To achieve excellent hydrogen dissociation ability, improve olefin selectivity and catalyst stability, and facilitate the dispersion of active metals
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example 1
[0020] Weigh commercially available silica gel (pore volume 0.71cm3 / g, specific surface area 474m 2 / g, the silica gel used in the following examples) 30g, deionized water was added dropwise to initial moistening, and the volume of consumed water was 48mL. Based on the assumption that the Sn content accounts for 3 wt% of the silica carrier, tin tetrachloride containing 0.9 g of Sn was weighed and dissolved in deionized water, and the volume was adjusted to 48 mL. Add it to the above-mentioned carrier silica gel for impregnation, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Weigh copper nitrate in the same amount as the molar number of Sn above, dissolve in deionized water, and dilute to 48 mL. Add it to the above samples for immersion, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Based on the final catalyst Pt content of 0.6wt%, weigh 0.18g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the...
example 2
[0023] Weigh 30 g of commercially available silica gel, add deionized water dropwise to initial moistening, and the volume of consumed water is 48 mL. Based on the assumption that the Sn content accounts for 3 wt% of the silica carrier, tin tetrachloride containing 0.9 g of Sn was weighed and dissolved in deionized water, and the volume was adjusted to 48 mL. Add it to the above-mentioned carrier silica gel for impregnation, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Weigh ferric nitrate in the same amount as the molar number of Sn above, dissolve in deionized water, and dilute to 48 mL. Add it to the above samples for immersion, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Based on the final catalyst Pt content of 0.6wt%, weigh 0.18g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the volume to 48mL, add it to the above-mentioned sample impregnated with Sn and Fe, age for 3 hours, and dry ...
example 3
[0025] Weigh 30 g of commercially available silica gel, add deionized water dropwise to initial moistening, and the volume of consumed water is 48 mL. Based on the assumption that the Sn content accounts for 3 wt% of the silica carrier, tin tetrachloride containing 0.9 g of Sn was weighed and dissolved in deionized water, and the volume was adjusted to 48 mL. Add it to the above-mentioned carrier silica gel for impregnation, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Weigh cobalt nitrate in the same amount as the molar number of Sn above, dissolve in deionized water, and set the volume to 48 mL. Add it to the above samples for immersion, age for 3 hours, dry at 80°C for 8 hours, and bake at 500°C for 4 hours. Based on the final catalyst Pt content of 0.6wt%, weigh 0.18g of Pt-containing chloroplatinic acid and dissolve it in deionized water, set the volume to 48mL, add it to the above-mentioned sample impregnated with Sn and Co, age for 3 hours, an...
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