Method for preparing grease hydrogenation catalyst in organic-aqueous system

A technology of oil hydrogenation and catalyst, which is applied in the direction of fatty acid hydrogenation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalyst, etc. Excellent performance, high reactivity, and superior hydrogenation reaction performance

Active Publication Date: 2015-03-11
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the problems of uneven particle size and low reactivity of catalysts in the prior art, and provide a method for preparing oil hydrogenation catalysts in an organic-water system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 1L of deionized water and 100g of isobutyl acetate into the reaction kettle to obtain an aqueous solution of isobutyl acetate, heat it to 75°C under mechanical stirring, add 5g of polyethylene glycol 2000 and stir well, and then add 250mL of sodium aluminate in parallel Solution (Al 2 o 3 Content is 200g / L) and 300mL of nitric acid solution of 30wt%, and reaction time is controlled at 0.75 hour, and after reaction finishes, adjusts reaction solution to pH value to 8 with ammoniacal liquor, ages reaction solution at the same temperature for 0.75 hour and filters, after washing with deionized water Then wash the filter cake with absolute ethanol, add 500mL of isobutyl acetate and stir evenly with a high-shear homogeneous dispersing emulsifier, then pour it into a round-bottomed flask for distillation until no liquid fraction evaporates, take it out after cooling, and dry at 150°C to obtain Alumina carrier powder.

[0018] Weigh 60g solid nickel nitrate (Ni(NO 3 ) ...

Embodiment 2

[0027] Add 1L of deionized water and 10g of isobutyl acetate into the reaction kettle to obtain an aqueous solution of isobutyl acetate, heat it to 85°C under mechanical stirring, add 5g of polyethylene glycol 2000 and stir evenly, and then add 500mL of sodium aluminate in parallel Solution (Al 2 o 3 Content is 100g / L) and 15wt% nitric acid solution 600mL, reaction time is controlled at 1 hour, after reaction finishes, adjust reaction solution to pH value 8 with ammonia water, 0.75 hour filtration of same temperature aging reaction solution, after washing with deionized water Then wash the filter cake with absolute ethanol, add 500mL of isobutyl acetate, stir evenly with a high-shear homogeneous dispersing emulsifier, pour it into a round bottom flask for distillation, until no liquid fraction evaporates, take it out after cooling, and dry at 150°C Alumina carrier powder is obtained.

[0028] Weigh 60g solid nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), 5g zirconium nitrate (Zr(N...

Embodiment 3

[0035] Add 1L of deionized water and 5g of isobutyl acetate into the reaction kettle, heat it to 75°C under mechanical stirring, add 5g of polyethylene glycol 4000 and stir evenly, and then add 500mL of sodium aluminate solution (Al 2 o 3 Content is 100g / L) and 15wt% nitric acid solution 600mL, reaction time is controlled at 1 hour, after reaction finishes, adjust reaction solution to pH value 7 with ammonia water, 0.75 hour filtration of same temperature aging reaction solution, after washing with deionized water Then wash the filter cake with absolute ethanol, add 500mL of isobutyl acetate, stir evenly with a high-shear homogeneous dispersing emulsifier, pour it into a round bottom flask for distillation, until no liquid fraction evaporates, take it out after cooling, and dry at 150°C Alumina carrier powder is obtained.

[0036] Weigh 60g solid nickel nitrate (Ni(NO 3 ) 2 ·6H 2 O), 0.2g zirconium nitrate (Zr(NO 3 ) 4 ·5H 2 O), 0.32g magnesium nitrate (Mg(NO 3 ) 2 ·6...

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Abstract

The invention discloses a method for preparing a grease hydrogenation catalyst in an organic-aqueous system. According to the method, isobutyl acetate and water are employed as mediums for performing a co-precipitation reaction, and then distillation modification is performed, so that the grease hydrogenation catalyst, which employs nickel as an active composition, zirconium, magnesium or iron as an auxiliary agent and aluminium oxide as a carrier, is prepared. Calculated based on the total weight of the catalyst, nickel accounts for 10-30 wt%, the aluminium oxide carrier accounts for 50-85 wt%, and the auxiliary agent zirconium, magnesium or iron accounts for 0.01-10 wt%. The specific surface area of the aluminium oxide carrier is 120-450 cc/g, and the pore volume is 1-2.7 mm/g. The prepared catalyst is high in activity, safe to use and applicable to grease hydrogenation reaction.

Description

technical field [0001] The invention relates to the technical field of oil hydrogenation catalysts, in particular to a method for preparing a highly active oil hydrogenation catalyst with nickel as an active component and alumina as a carrier by using an organic-aqueous medium. Background technique [0002] Oil is not only an important source of food for humans, but also an important raw material for daily chemicals, rubber and plastics, textile printing and dyeing, chemical coatings and pharmaceutical industries. Oils and fats in nature contain one, two or more unsaturated bonds. Long-term exposure to air is very easy to oxidize, producing peroxides and then decomposing into small molecular compounds such as short carbon chain aldehydes, ketones, acids, etc., which have strong irritating properties. Sexual odor, causing oil rancidity, not suitable for use. [0003] Under the action of a catalyst, unsaturated fats can improve the stability of oxygen and heat through hydroge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C11C3/12
Inventor 孙春晖陈永生于海斌刘伟许岩李佳张永惠王梦迪
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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