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Nano transitional metallic oxide preparation method

A technology of transition metal and transition metal salt is applied in the field of preparation of nano-transition metal oxide, which can solve the problems of high cost, large amount of surfactant, difficult separation and the like

Active Publication Date: 2006-11-22
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] CN 1334243A discloses a method for preparing nano-zirconia by inverse microemulsion. The amount of surfactants, hydrocarbons and water required in this method is large, the output is extremely low, and separation is difficult, and the amount of surfactants is large and the cost is high. high

Method used

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  • Nano transitional metallic oxide preparation method

Examples

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Effect test

Embodiment 1

[0068] Mix 100g of Changsanxian dewaxed oil and 50g of SP-80, heat to dissolve at 120°C, and mix well; heat 590g of copper nitrate trihydrate to 120°C to melt, slowly add to the above mixture, and mix for 10 minutes to form a uniform supersolubilizing colloid. Add 200g of sodium hydroxide to 60g of water and heat to dissolve, add into the formed supersolubilized colloid, and mix well. Wash once with ethanol, then wash with distilled water until sodium nitrate is less than 0.5w%, and centrifuge. Dry at 110°C for 18 hours, and bake at 400°C for 5 hours, that is, the nano-copper oxide of this example, its properties are as follows: average particle size 19nm, BET specific surface 73m 2 / g, pore volume (ml / g) 0.193, average pore diameter (A) 159.

Embodiment 2

[0070] Heat 67g of four-liner oil and 10g of polyisobutenyl maleic acid glyceride at 100°C to dissolve and mix evenly; heat 800g of ferric nitrate hexahydrate to 120°C to melt, slowly add to the above mixture, and mix for 20 minutes to form a uniform supersolubilization gel body. 123g of liquid ammonia was slowly added to the above mixture, the reactor was sealed, and reacted at 110°C for 2 hours. Seal the reactor, react at 200°C for 4 hours, and age for 10 hours. Then wash with distilled water until the weight concentration of ammonium nitrate is less than 0.5wt%, and centrifuge. Dry at 100 DEG C for 10 hours, bake at 500 DEG C for 8 hours, the nano-iron oxide of the present embodiment has the following properties: average particle diameter 36nm, BET specific surface 69m2 / g, pore volume (ml / g) 0.21, average pore diameter ( A) 129.

Embodiment 3

[0072] Heat and dissolve 300g of second-line oil and 30g of polyisobutenyl triethanolamine maleate at 100°C to dissolve; mix 500g of manganese nitrate hexahydrate and 170g of urea to melt at 120°C, slowly add to the above mixture, and mix for 20 minutes to form Uniform hypersolubilized colloid. Seal the reactor, react at 200° C. for 4 hours, and age for 10 hours to obtain nano manganese hydroxide gel. Then wash with distilled water until the weight concentration of ammonium nitrate is less than 0.5wt%, and centrifuge. Dry at 100°C for 10 hours, and bake at 500°C for 8 hours, that is, the nano manganese oxide of this example, its properties are as follows: average particle size 27nm, BET specific surface 82m 2 / g, pore volume (ml / g) 0.24, average pore diameter (A) 131.

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Abstract

This invention discloses a method for producing nanometer transition metal oxide. The procedures comprise: solubilise the melting transition metal salt in the mixture of hydrocarbon component and surfactantto form the molten salt-in-oil super solubilising colloidal group, which limits the transition metal hydroxide generated by the reaction of molten salt and precipitant in the colloidal group, so as to avoid the increase of particle size and narrow the particle size distribution range. and then obtain the nanometer transition metal oxide by cleaning, drying and burning. This invention is characterized of high yield and purity,with low cost of surfactant and hydrocarbon component. Besides, the process is simple and is adapted for industrial mass production.

Description

technical field [0001] The invention relates to a preparation method of nanometer metal oxides, in particular to a preparation method of nanometer transition metal oxides. Background technique [0002] The particle size of nano-transition metal oxide particles is generally between 1 and 100nm. Because of their excellent electrical, magnetic, optical, mechanical and chemical properties, they are widely used in fine ceramics, ultraviolet shielding, piezoelectric materials, photoelectric materials, and high-efficiency materials. Catalyst materials, magnetic materials have a wide range of applications. [0003] Nano-titanium dioxide has a high ability to absorb ultraviolet rays and unique color effects, and can be widely used in sunscreen skin care products, plastic film products, wood protection, transparent and durable topcoats, fine ceramics, catalyst automotive topcoats and other fields. Titanium dioxide is also the carrier of solid superacid catalyst, which can replace liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G1/02
Inventor 王鼎聪
Owner CHINA PETROLEUM & CHEM CORP
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