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Molybdenum-based composite metal oxide catalyst for synthesizing propenyl alcohol by glycerol and preparation method of molybdenum-based composite metal oxide catalyst

A composite metal and oxide technology, applied in the chemical industry, can solve the problems of low selectivity of propenyl alcohol and low economic application value, and achieve the effects of simple preparation process and important economic and social value

Active Publication Date: 2014-12-10
SHANGHAI HUAYI NEW MATERIAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, there have also been several research reports on the catalytic synthesis of allyl alcohol from glycerol, mainly using a single metal oxide or a supported single metal oxide as a catalyst, and its selectivity to allyl alcohol is low, and its economic application value is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 8.0 g Mo(NO 3 ) 3 .5H 2 O and 1.0 g Zr(NO 3 ) 2 .5H 2 O is placed in a beaker, add 100 ml of deionized water and stir continuously to promote the complete mixing of solids and salts. 2.0 M (NH 4 ) 2 CO 3 The solution was slowly added dropwise to the mixed solution until the precipitation was complete. After filtration, the filter residue was stirred in 100 ml deionized water at 60 °C for 0.5 h. Then filter and wash to neutral, and ventilate and dry at 80 °C. After drying, the mixture was heated and calcined at 550 °C for 6 h in an air atmosphere in a muffle furnace to obtain Mo 10 Zr 1 o z composite oxide catalyst.

[0018] Will Mo 10 Zr 1 o z The composite oxide catalyst was tabletted and sieved to obtain 1.0 g of 20-40 mesh catalyst particles, which were filled in a constant temperature section of a reaction tube with a diameter of 8 mm, and quartz sand was paved front and back. A metering pump was used to inject 20 wt% glycerol aqueous solution...

Embodiment 2

[0020] Weigh 10.0 g Mo(NO 3 ) 3 .5H 2 O and 1.0 g Ni(NO 3 ) 2 .6H 2 O is placed in a beaker, add 100 ml of deionized water and stir continuously to promote the complete mixing of solids and salts. 1.0 M (NH 4 ) 2 C 2 o 4 The solution was slowly added dropwise to the mixed solution until the precipitation was complete. After filtration, the filter residue was stirred in 100 ml deionized water at 60 °C for 0.5 h. Then filter and wash to neutral, and ventilate and dry at 80 °C. After drying, the mixture was heated and calcined at 550 °C for 6 h in an air atmosphere in a muffle furnace to obtain Mo 8 Ni 1 o z composite oxide catalyst.

[0021] Will Mo 8 Ni 1 o z The composite oxide catalyst was tabletted and sieved to obtain 1.0 g of 20-40 mesh catalyst particles, which were filled in a constant temperature section of a reaction tube with a diameter of 8 mm, and quartz sand was paved front and back. The reactivity evaluation method and product analysis method are...

Embodiment 3

[0023] Weigh 8.0 g Mo(NO 3 ) 3 .5H 2 O and 1.5 g Fe(NO 3 ) 3 .9H 2 O is placed in a beaker, add 100 ml of deionized water and stir continuously to promote the complete mixing of solids and salts. 2.0 M (NH 4 ) 2 CO 3The solution was slowly added dropwise to the mixed solution until the precipitation was complete. After filtration, the filter residue was stirred in 100 ml deionized water at 60 °C for 0.5 h. Then filter and wash to neutral, and ventilate and dry at 80 °C. After drying, the mixture was heated and calcined at 550 °C for 6 h in an air atmosphere in a muffle furnace to obtain Mo 6 Fe 1 o z composite oxide catalyst.

[0024] Will Mo 6 Fe 1 o z The composite oxide catalyst was tabletted and sieved to obtain 1.0 g of 20-40 mesh catalyst particles, which were filled in a constant temperature section of a reaction tube with a diameter of 8 mm, and quartz sand was paved front and back. The catalyst activity evaluation method is as in Example 1. The react...

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Abstract

The invention belongs to the technical field of chemistry and chemical engineering and in particular relates to a molybdenum-based composite metal oxide catalyst for synthesizing propenyl alcohol by glycerol and a preparation method of the molybdenum-based composite metal oxide catalyst. The chemical formula of the catalyst, namely molybdenum-based composite metal oxide, is MoxMyOz, wherein M refers to Fe, Ni or Zr. The preparation method of the molybdenum-based composite metal oxide catalyst comprises the following steps: dissolving and mixing soluble molybdenum salt and soluble salt containing tungsten, vanadium, iron, nickel and zirconium in an aqueous solution according to a certain ratio, and slowly dropwise adding carbonate or ammonium salt as a precipitator until the solution is fully precipitated; and ageing precipitate in the aqueous solution, then washing the precipitate by deionized water until the pH value of filtrate is neutral, subsequently drying a filter cake in a drying oven, then increasing to a certain temperature by temperature programming, and roasting to obtain the catalyst. The preparation method of the catalyst is simple in process; according to the prepared catalyst, a glycerol conversion rate is maintained to be greater than 90% while propenyl alcohol selectivity reaches over 40%.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a highly selective catalyst for synthesizing acrolein from glycerol and a preparation method thereof. Background technique [0002] Glycerol is an important platform compound in high-efficiency biomass conversion technology, and its comprehensive utilization is a key technology in the research and development of biomass petrochemical industry. Among the various utilization methods of glycerol, acrolein, the main product of glycerol dehydration, is a very important chemical intermediate, which can be used to further prepare high-value compounds such as acrylic acid and DL-methionine, which have important industrial and agricultural values ​​and are in short supply. At present, allyl alcohol is mainly prepared by selective hydrogenation of acrolein, or by multi-step synthesis using sodium acetate and 3-chloropropene, and the reaction process is complex and env...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/28B01J23/883B01J23/881C07C33/03C07C29/60C07C47/22C07C45/52
Inventor 庄岩黄亮沈伟李雪梅秦枫马建学徐华龙
Owner SHANGHAI HUAYI NEW MATERIAL
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