Structured catalyst for preparing 1,3-propanediol by hydrogenation of glycerol water solution, and preparation method of 1,3-propanediol
A glycerin aqueous solution and catalyst technology, which is applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, chemical instruments and methods, etc., can solve the problem of non-arbitrary structure, easy wear of catalyst, change of residence time, etc. problems, to achieve large market value and industrial application prospects, no catalyst wear, low pressure drop effect
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Embodiment 1
[0032] The catalyst used is Pt / Mo / W-structured ceramics, and the mass percentage of metal is Pt:Mo:W=2:1:10. The catalyst preparation steps include: 1) impregnating spinel ceramics with the required amount of ammonium metatungstate aqueous solution, keeping at 90°C for 20 hours, drying at 110°C, and roasting at 700°C for 3 hours to obtain a tungsten-structured ceramic composite oxide Carrier; 2) Use required amount of chloroplatinic acid and molybdenum nitrate in the carrier solution, impregnate for 9 hours, dry at 110°C, and roast at 400°C for 3 hours to obtain catalyst A.
Embodiment 2
[0034] The catalyst used is Pt / Co / W-structured ceramics, and the metal mass percentage is Pt:Co:W=2:0.5:10. The preparation steps were the same as in Example 1 to obtain catalyst B.
Embodiment 3
[0036] The catalyst used is Pt / Cr / W-structured ceramics, and the mass percentage of metal is Pt:Cr:W=2:1:15. The preparation steps were the same as in Example 1 to obtain catalyst C.
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