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A kind of preparation method of the oil hydrogenation nano-catalyst that catalytic activity improves

A nano-catalyst, oil hydrogenation technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, fat oil/fat refining, etc. and other problems, to achieve the effect of stable performance, improved wettability and permeability, and enhanced anti-oxidation

Active Publication Date: 2020-02-07
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention provides a nano-catalyst for hydrogenation of fats and oils with improved catalytic activity and a preparation method thereof, which overcomes the problems of the existing hydrogenation catalysts such as relatively expensive price, difficult material acquisition, and unreliable catalytic activity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]Take 20g of 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 agitator to disperse the calcium carbonate powder well, raise the temperature of the water bath to 50°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), after mixing evenly, add 0.35 grams of surfactant ten Glycol polyoxyethylene ether-9, stirring and dissolving into a solution containing a surfactant concentration of 0.01mol / L. Add the above solution into the dropping funnel, and add it to the three-necked flask filled with the carrier and the precipitating agent at a speed of 3 s / d. After the dropwise addition, use a precision pH meter to measure the pH value under the reaction environment and adjust it to 7 or so, react for 6 hours, after the reaction is over, vacuum f...

Embodiment 2

[0039] The surfactant lauryl alcohol polyoxyethylene ether-9 in Example 1 was replaced with octadecylamine polyoxyethylene ether-20 at the same molar concentration, and other steps or parameters were consistent with Example 1.

Embodiment 3

[0041] The surfactant lauryl alcohol polyoxyethylene ether-9 in embodiment 1 is replaced with coco fatty amine polyoxyethylene ether-9 of the same molar concentration, and other steps or parameters are consistent with embodiment 1.

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Abstract

The invention discloses a preparation method of an oil hydrogenation nano-catalyst for improving catalytic activity and belongs to the technical field of nano-catalysts. The preparation method of the oil hydrogenation nano-catalyst disclosed by the invention comprises the following steps: taking nano calcium carbonate as a carrier, enabling an alkaline precipitant to react with a metal salt of a catalytic activity component, and supporting the catalytic activity component onto a carrier. Moreover, a surfactant is added in the preparation process, and an adsorption behavior of reactive metals is influenced due to competitive adsorption between the surfactant and the activated metal ions during a precipitation reaction. Meanwhile, due to the wetting and spreading characteristics of the surfactant, the wetting and penetrating properties of the activated metal salt solution on the carrier are promoted, and the dispersion property of the catalytic activity component on the carrier is excellent, so that the activity of the prepared catalyst is improved.

Description

technical field [0001] The invention relates to a preparation method of a nano-catalyst for oil hydrogenation with improved catalytic activity, belonging to the technical field of nano-catalysts. 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 prepared from metal nickel, and later some achievements were made by using supports to support noble metals. Catalysts that change the active components of metals and load them ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/78C11B3/02
CPCB01J23/002B01J23/78B01J2523/00C11B3/02B01J2523/12B01J2523/23B01J2523/31B01J2523/847B01J2523/845B01J2523/842
Inventor 蒋惠亮赵焕利潘保凯
Owner JIANGNAN UNIV
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