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
Active Publication Date: 2018-10-12
JIANGSU SEVENCONTINENT GREEN CHEM CO LTD
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Problems solved by technology
[0006] For random packing, its structure is not random and unevenly distributed, which is easy to cause channel flow, short circuit or wall flow, which further changes the overall residence time and causes the local temperature of the catalyst to be too high
In addition, there are problems such as large pressure drop, easy wear and loss of catalyst, etc.
Method used
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Effect test
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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The invention relates to a structured catalyst for preparing 1,3-propanediol by hydrogenation of a glycerol water solution, and a preparation method of 1,3-propanediol. The catalyst comprises a structured ceramic material, and Pt, X and W supported on the structured ceramic material, wherein the X is one or more selected from a group consisting of La, Sm, Ce, Ru, Ag, Pr, Mn, Co, Pd, Cr, Mo and Rh.The structured catalyst provided by the invention has the advantages of high stability, low pressure drop, uniform bed distribution, no catalyst abrasion, simple amplification, flexible operation andthe like, and is suitable for the preparation of 1,3-propanediol by hydrogenation of the glycerol water solution. The 1,3-propanediol is prepared by adopting the method provided by the invention, theraw materials are easy to obtain, the reaction conditions are mild, the reaction temperature is proper, only water is needed as a solvent, the production rate of 1,3-propanediol is high, and the preparation method meets the requirement of green chemical industry and has a great market value and industrial application prospect.
Description
technical field [0001] The invention relates to a regular catalyst for preparing 1,3-propanediol by hydrogenating glycerin aqueous solution and a preparation method for 1,3-propanediol. Background technique [0002] The rapid expansion of biodiesel production capacity around the world has created overcapacity in the by-product glycerol. This makes glycerin an extremely attractively priced raw material. [0003] 1,3-propanediol is an important chemical raw material. The polyester fiber trimethylene terephthalate (PTT) synthesized from it as a monomer has the high performance of polyethylene terephthalate (PET). Performance and easy processability of polybutylene terephthalate (PBT), it has broad application prospects in the production of plasticizers, detergents, preservatives, emulsifiers and other fields. [0004] The existing 1,3-propanediol preparation technologies mainly include acrolein hydration hydrogenation method, ethylene oxide carbonylation hydrogenation method,...
Claims
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IPC IPC(8): B01J23/652B01J23/89B01J37/02B01J37/08C07C29/60C07C31/20
CPCB01J23/6527B01J23/8993B01J37/0201B01J37/08C07C29/60C07C31/205
Inventor 孟楠陶亚春周东熠
Owner JIANGSU SEVENCONTINENT GREEN CHEM CO LTD
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