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Nickel-magnesium composite oxide and preparation method thereof

A technology of composite oxides and nickel-magnesium, applied in the direction of magnesium oxide, nickel oxide/nickel hydroxide, etc., can solve the problems of low specific surface area, uneven microscopic particles, and less pore content of nickel-magnesium composite oxides, and achieve the solution of microscopic The effect of non-uniform particle size, uniform size and good technical effect

Active Publication Date: 2016-04-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is the problems of low specific surface area, less pore content and uneven microscopic particles of nickel-magnesium composite oxides existing in the prior art, and a new nickel-magnesium composite oxide is provided

Method used

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  • Nickel-magnesium composite oxide and preparation method thereof
  • Nickel-magnesium composite oxide and preparation method thereof
  • Nickel-magnesium composite oxide and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0038] At a constant temperature of 40°C, mix 0.5 grams of nickel nitrate, 15.1 grams of magnesium nitrate, 14.5 grams of potassium carbonate, and 7.4 grams of polyethylene glycol into 75 grams of water, and stir well, and finally add 0.1 grams of sodium hydroxide to adjust the pH=13 ~14, the mixed solution was stirred at a constant temperature of 50°C for 20 hours, and then the product was subjected to aging treatment at a temperature of 150°C for 15 hours and a pressure of 0.3MPa. After the product was cooled, it was washed with water and alcohol respectively, and then the The solid product was dried at 100° C. for 6 hours, and finally calcined at 500° C. for 10 hours in an air atmosphere to obtain the nickel-magnesium composite oxide of the present invention.

Embodiment 2～6

[0040] According to the synthesis steps described in [Example 1], only changing the amount of nickel source added, nickel-magnesium composite oxides with nickel contents of 0.1%, 0.5%, 1%, 5%, and 15% can be synthesized. The formula, preparation conditions and composition and structure characteristics of nickel-magnesium composite oxide are shown in Table 1~Table 4.

Embodiment 7～15

[0042] According to the synthesis steps described in [Example 1], change nickel source, magnesium source, precipitant, dispersant and alkali (wherein succinate diisooctyl sodium sulfonate, sodium hydroxide, potassium hydroxide, ammoniacal liquor, tetrapropane Ammonium hydroxide, tetraethylammonium hydroxide, cetyltrimethylammonium bromide and polyethylene oxide-propylene oxide block copolymer are referred to as AOT, NaOH, KOH, NH 3 h 2 O, TPAOHTEAOH, CTAB, P123 and F127) type and quality, adjusting the preparation conditions, can be synthesized to obtain the nickel-magnesium composite oxide of the present invention. The formula, preparation conditions and structural composition characteristics of nickel-magnesium composite oxide are shown in Table 1~Table 4.

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Abstract

The invention relates to a nickel magnesium composite oxide and a preparation method thereof, mainly solving problems of the low specific surface area, less pore content and nonuniform microcosmic particles of nickel magnesium composite oxides in the prior art. According to a technical scheme, the nickel magnesium composite oxide comprises a) 0.1-30 parts by weight of nickel oxide and b) 100 parts by weight of magnesium oxide, wherein the BET specific surface area of the nickel magnesium composite oxide is larger than 25 m<2> / g, the pore content is higher than 0.12 cm<3> / g, and the microcosmic particle size is between 0.5 [mu]m and 5.0 [mu]m. By adoption of the technical scheme, the problems are solved well. The preparation method thereof can be used for industrial production of the nickel magnesium composite oxide.

Description

technical field [0001] The invention relates to a nickel-magnesium composite oxide and a preparation method thereof. Background technique [0002] Metal composite oxides, especially oxides with perovskite, spinel or greenstone crystal structures, have good optical, electrical, and magnetic properties, and are important laser materials, pyroelectric materials, and piezoelectric materials. Electrical materials and strong magnetic materials have important uses in both traditional industries and modern high-tech, and are widely used. Among them, nickel-magnesium composite oxides can be used as sensors, catalysts, and adsorbents due to their advantages such as simple preparation, excellent performance, environmental protection, and low price. In addition, in the natural gas chemical industry, the process of producing synthesis gas through methane reforming reaction and then synthesizing organic chemical products from synthesis gas has attracted widespread attention as an importa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/04C01F5/02
Inventor 周健刘志成高焕新
Owner CHINA PETROLEUM & CHEM CORP
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