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Preparation method of oil-fat hydrogenation nano catalyst

A nano-catalyst and oil hydrogenation technology, which is applied in the fields of fatty acid hydrogenation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high price, complicated preparation, and difficult material acquisition

Inactive Publication Date: 2015-03-25
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the existing problems of the existing hydrogenation catalysts such as expensive price, complex preparation, and difficulty in obtaining materials, the present invention adopts the following technical scheme: the preparation of a nano-catalyst for oil hydrogenation, using industrially produced nano-calcium carbonate as a carrier, and using precipitation In the method, the catalytically active component is loaded on the carrier in the form of metal salt, the catalytically active component is mainly nickel, and the catalytically active auxiliary agent is one or more of aluminum, cobalt, zinc, iron, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 8g of inactive nano-calcium carbonate in a 250mL three-necked flask, add 50mL of the prepared alkaline precipitant 0.5mol / L sodium carbonate aqueous solution, start the stirrer at a speed of 300r / min, heat the water bath to 70°C, stir for 30min, and take 50mL of the prepared 0.5mol / L nickel nitrate aqueous solution and 10mL of the prepared 0.5mol / L aluminum nitrate aqueous solution (atomic molar ratio Ni:Al=5:1) were mixed uniformly and added to the dropping funnel. Add the speed of d to the three-necked flask containing the carrier and the precipitant. After the dropwise addition, use a precision pH meter to measure the pH value in the reaction environment and adjust it to about 7 with aqueous sodium carbonate solution. React for 6 hours. After the reaction is completed, vacuum Suction filter the precipitate, wash it with deionized water until neutral, rinse it with absolute ethanol three times, take out the filter cake, place it in a 100°C oven and dry it to absol...

Embodiment 2

[0020] Change the ratio of the active components in Example 1 to atomic molar ratio Ni:Al=1:5, mix well and add to the dropping funnel, and the rest of the steps remain unchanged. Finally, the iodine value of the product was measured according to GB / T5532-2008, and the melting point of the product was measured by the capillary method of a micromelting point apparatus. The evaluation product parameters are shown in Table 1.

Embodiment 3

[0022] Change the distribution ratio of the active components in Example 1 to the atomic molar ratio Ni:Co=800:1, mix well and add to the dropping funnel, and the rest of the steps remain unchanged. Finally, the iodine value of the product was measured according to GB / T5532-2008, and the melting point of the product was measured by the capillary method of a micromelting point apparatus. The evaluation product parameters are shown in Table 1.

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Abstract

The invention relates to a method for preparing an oil-fat hydrogenation nano catalyst by using nano calcium carbonate. The method is mainly characterized by breaking through the use of a conventional catalyst carrier and adopting nano calcium carbonate which is economical and easily available as a catalyst carrier. The catalyst preparation is simple in operation, the performance of the catalyst is stable, and the hydrogenation effect can reach an industrial requirement level. The catalyst prepared by loading an active ingredient, namely nickel and one or more than one of auxiliary agents, namely aluminum, cobalt, zinc, iron and the like to a carrier namely nano calcium carbonate can be used for hydrogenation reaction of unsaturated fatty acid including branched chain unsaturated fatty acid in natural oil and fat.

Description

technical field [0001] The invention relates to the field of nano-catalysts, and provides a method for preparing a nano-catalyst for oil hydrogenation by using nano-calcium carbonate as a catalyst carrier. The catalyst provided by the invention can be used for the hydrogenation of unsaturated fatty acids including branched chain unsaturated fatty acids in natural oils. Background technique [0002] Natural oils exist widely in nature, but due to the existence of unsaturated bonds in natural oils, they are mostly liquid at room temperature, have a low melting point, are easily oxidized by oxygen in the air, change color and taste, and are not easy to store. Oil hydrogenation technology can improve the quality of natural oils, making them widely used in industry and food processing industries. With the rapid development of the oil hydrogenation industry, the research work of catalysts has also been paid attention to. [0003] The earliest grease hydrogenation catalysts were ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232C11C3/12
Inventor 蒋惠亮赵焕利范明明掌子龙王相明
Owner JIANGNAN UNIV
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