Preparation method of magnetic fat hydrogenation catalyst

A technology of oil hydrogenation and catalyst, which is applied in the field of oil hydrogenation catalysis, can solve the problems of catalyst loss, production cost, improvement, and influence on the quality of hydrogenated oil

Active Publication Date: 2014-01-15
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The loss of the catalyst during the reaction will cause some heavy metal components to be mixed into the hydrogenation product, which will seriously pollute the hydrogenated oil and affect the quality of the hydrogenated oil
In addition, the loss of

Method used

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  • Preparation method of magnetic fat hydrogenation catalyst

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 920 g of absolute ethanol and 1080 g of deionized water were uniformly mixed to obtain an alcohol-water mixed solution. Mix 20g of magnetic powder Fe under high-speed stirring 3 o 4 Dispersed into alcohol-water mixed solution.

[0017] Adjust the pH of the solution to 7.5 with ammonia water, and slowly add 104 g of tetraethyl orthosilicate solution to the solution dropwise under high-speed stirring at a controlled reaction temperature of 70°C. After the addition, it is aged for 3.0 hours, filtered, washed with alcohol, and dried. Obtain SiO2 / Fe3O4 composite carrier.

[0018] Add 1000mL of base water into the reaction kettle, start stirring and heating the system to 80°C, add 1000mL of nickel nitrate solution with a concentration of 0.32mol / L, 500mL of Na with a concentration of 0.4mol / L 2 CO 3 The solution was added dropwise into the reaction kettle at a uniform speed, and the feeding time was controlled within 1.0 hour. After all the raw material liquid was added, ...

Embodiment 2

[0024] 1200g of isopropanol and 800g of deionized water were evenly mixed to obtain an alcohol-water mixed solution. Mix 20g of magnetic powder Fe under high-speed stirring 3 o 4 Dispersed into alcohol-water mixed solution. Other steps are with embodiment 1. The evaluation results of hydrogenation reaction of palm oil are shown in Table 1.

Embodiment 3

[0026] With 20g magnetic powder Fe in embodiment 1 3 o 4 Add-on changes 30g into, other is with embodiment 1. The evaluation results of hydrogenation reaction of palm oil are shown in Table 1.

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Abstract

The invention provides a preparation method of a magnetic fat hydrogenation catalyst. The preparation method is characterized in that the catalyst adopts magnetic compound oxide SiO2/Fe3O4 as a carrier and nickel as an active constituent and comprises 5 to 40 weight percent of nickel, 20 to 60 weight percent of SiO2, 10 to 40 weight percent of Fe3O4 and the balance of stearic acid; during the preparation process of the catalyst, magnetic powdered ferroferric oxide is injected and is coated with silicon dioxide, and the magnetic fat hydrogenation catalyst is prepared through a method of precipitation. The nickel serving as the active constituent is magnetic and is bonded with the carrier relatively firmly, so that the possibility of the phenomena of chalking and disappearance of the catalyst during a reaction process can be lowered, and the quality of a hydrogenization product can be improved. Besides, the catalyst has the advantage that the reclaiming and utilization ratio of the catalyst can be improved through reclaiming of an additional magnetic field, so that the manufacturing cost of a fat processing enterprise can be reduced.

Description

technical field [0001] The invention relates to the technical field of oil hydrogenation catalysis, in particular to a preparation method of a magnetic oil hydrogenation catalyst. More specifically, the composite oxide SiO 2 / Fe 3 o 4 As a magnetic carrier, a preparation method of a catalyst loaded with active Ni by a co-precipitation method, and an application technology of the catalyst in oil hydrogenation reaction. Background technique [0002] Oil hydrogenation is the process of partially or completely hydrogenating the double bonds of unsaturated animal and vegetable oils through a catalyst. Stability. For edible oil, hydrogenation can also improve the color, aroma and flavor of the oil. The oil hydrogenation catalyst is a typical powder catalyst, and the loss and deactivation of the catalyst are serious during the reaction process. The loss of the catalyst during the reaction will cause some heavy metal components to be mixed into the hydrogenation product, which ...

Claims

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Application Information

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IPC IPC(8): B01J23/755C11C3/12
Inventor 刘伟于海斌陈永生孙春晖许岩刘冬冬
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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