Hydrogenation catalyst with low trans-acid grease and preparation method thereof

A low-trans-acid oil and hydrogenation catalyst technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc., can solve problems such as inability to apply industrial production, Achieve the effects of improving catalyst activity, reducing trans fatty acid content, and increasing dispersion

Active Publication Date: 2015-02-25
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some hydrogenation methods and improved noble metal catalysts can indeed greatly reduce the amount of trans fatty acid produced during the hydrogenation process, or even reach zero. However, considering the operability and price factors, they cannot be applied to industrial production at present.

Method used

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  • Hydrogenation catalyst with low trans-acid grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 5 g of magnesium oxide powder and add it to 200 ml of distilled water, stir evenly, add it into the neutralization kettle as the reaction bottom liquid, and heat it up to 85°C. Add 150mL of aluminum sulfate solution with a concentration of 1.00mol / L and 220mL of sodium metaaluminate solution with a concentration of 4.00mol / L into the neutralization reactor in parallel, and keep the reaction temperature at 85°C under mechanical stirring for the entire reaction system . After 1 hour, the neutralization reaction was completed, and the reaction liquid was aged, and the aging time was controlled for 60 minutes. After aging, the slurry was filtered, the filter cake was washed with deionized water and absolute ethanol, and dried at 110° C. for 4 hours to obtain an alumina-magnesia composite carrier.

[0019] At room temperature, soak the dried carrier in an aqueous solution containing 0.16 g of silver nitrate, stir and impregnate for 4 hours, then dry and roast. Soak th...

Embodiment 2

[0023] In Example 1, the magnesium oxide powder addition was changed to 10g, the aluminum sulfate solution was changed to 135mL, and the sodium metaaluminate solution was changed to 200mL, and others were the same as in Example 1. Table 1 shows the reaction results of the catalyst's soybean oil hydrogenation performance evaluation.

Embodiment 3

[0025] The silver nitrate add-on in embodiment 1 is increased to 0.32g, and other is with embodiment 1. Table 1 shows the reaction results of the catalyst's soybean oil hydrogenation performance evaluation.

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Abstract

The invention discloses a hydrogenation catalyst with low trans-acid grease and a preparation method thereof. The hydrogenation catalyst consists of four parts, i.e., a main active component (nickel), an additive, a composite carrier Al2O3-MgO and stearic acid. The structural formula is Ni-M/Al2O3-MgO/stearic acid; the content of the main active component (nickel) is 5.0-20wt%; M is one of Ru, Rh, Pd and Ag, and the content of the M is 0.01-0.05wt%; the content of the composite carrier Al2O3-MgO is 20-50wt%; the remaining is stearic acid. The preparation method of the hydrogenation catalyst comprises the following steps of: loading the metal nickel and the additive onto the carrier by adopting a step-by-step impregnation method, then drying, roasting, reducing and forming the hydrogenation catalyst with low trans-acid grease. The hydrogenation catalyst disclosed by the invention has the advantages that the preparation operation is simple, the repeatability for batch preparation is good, the cost is low; the activity is high, the content of trans-fatty acid as a hydrogenation product is low, the use is safe, so that the hydrogenation catalyst is especially suitable for hydrogenation reaction of edible grease.

Description

technical field [0001] The invention belongs to the preparation technology of an oil hydrogenation catalyst, and relates to a low-trans-acid oil hydrogenation catalyst as well as its preparation method and application. More specifically, the preparation method of a catalyst that uses alumina-magnesia as a carrier and adds additives in the preparation process, adopts a step-by-step impregnation method to load additives and active metal Ni on the carrier, and the catalyst is used in unsaturated oils and fats. Application technology in hydrogenation. Background technique [0002] Hydrogenated oil is the raw material for the preparation of margarine, shortening, cocoa butter substitute and other products. Hydrogenated oil has a huge market demand and a wide range of uses in the food industry. However, a large amount of trans fatty acids are produced during the hydrogenation of oils, and the safety of trans fatty acids has made the development of the oil hydrogenation industry f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28
Inventor 陈永生刘伟于海斌孙春晖许岩张永惠李佳隋芝宇
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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