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Solid base and preparation method thereof

A solid base and carrier technology, applied in the field of solid base and its preparation, can solve the problems of low mechanical strength, loss of alkaline center, loss of working fluid, etc., and achieve the effects of improving mechanical strength, high activity and stability, and reducing loss

Pending Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the regenerated catalysts studied at present have a certain effect on the regeneration of anthraquinone degradation products, the above-mentioned preparation method still does not fundamentally solve the general problems of the regeneration catalysts of anthraquinone degradation products, such as: the loss of the basic center, low mechanical strength, Greater loss of working fluid, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Step (1): Prepare liquid A: weigh magnesium nitrate, aluminum nitrate, zirconium nitrate, dissolve in deionized water, among them, Mg 2+ Concentration is 0.52 mol / L, Al 3+ The concentration is 0.28 mol / L, Zr 4+ The concentration is 0.18 mol / L. Prepare liquid B: weigh NaOH, Na 2 CO 3 , Tween 80, dissolved in deionized water, wherein, NaOH / Na 2 CO 3 The molar ratio is 15, (NaOH+Na 2 CO 3 ) in liquid B with a mass fraction of 5%, and the mass fraction of Tween 80 in liquid B with a mass fraction of 0.8%. Prepare liquid C: weigh heptadecafluorodecyltrimethoxysilane and dissolve it in isopropanol, wherein the mass fraction of heptadecafluorodecyltrimethoxysilane in liquid C is 0.45%. Prepare liquid D: weigh strontium nitrate and disodium edetate, dissolve them in deionized water, and adjust the pH value to 9.5, wherein the mass fraction of strontium sulfate in liquid D is 4.5%, and ethylenediaminetetraacetic acid di The mass fraction of sodium in liquid D was 7.9%. ...

Embodiment 2

[0048] The preparation method is the same as in Example 1, the difference is: Mg in the A liquid 2+ Concentration is 0.61 mol / L, Al 3+ The concentration is 0.32mol / L, Zr 4+ The concentration is 0.14 mol / L. The surfactant in liquid B is Span 80. The mass fraction of dodecafluoroheptylpropyltrimethoxysilane in liquid C is 0.35%.

[0049] The composition of the solid base is: 30.90 wt% MgO, 21.81 wt% ZrO 2 , 41.34 wt% Al 2 o 3 , 2.80 wt% SrO, 3.14 wt% NaOH, 0.015 wt% dodecafluoroheptylpropyltrimethoxysilane, with a specific surface area of ​​239 m 2 / g, the crush strength is 178 N, the contact angle of hexadecane is 155°, and the effective regeneration amount of anthraquinone is 21.2 g / L.

Embodiment 3

[0051] The preparation method is the same as in Example 1, the difference is: Mg in the A liquid 2+ Concentration is 0.66 mol / L, Al 3+ The concentration is 0.35mol / L, Zr 4+ The concentration is 0.09 mol / L. The surfactant in liquid B is PEG400. The mass fraction of tridecafluorooctyltrimethoxysilane in liquid C is 0.19%.

[0052] The composition of the solid base is: 33.92 wt% MgO, 14.22 wt% ZrO 2 , 45.87 wt%Al 2 o 3 , 2.84 wt% SrO, 3.14 wt% NaOH, 0.008 wt% tridecafluorooctyltrimethoxysilane, with a specific surface area of ​​251 m 2 / g, the crush strength is 166 N, the contact angle of hexadecane is 146°, and the effective regeneration amount of anthraquinone is 21.5 g / L.

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Abstract

The invention provides a solid base and a preparation method thereof. The solid base is composed of a composite carrier loaded with alkali metal hydroxide, wherein based on the weight of the final solid base, the content of the alkali metal hydroxide is 0.5-10 wt%; based on the weight of the composite carrier, the content of the fluorosilane is 0.001-0.05 wt%; the content of the Mg element in thecarrier is 10-50 wt% in terms of MgO; the content of the Zr element in the carrier is 5-50 wt% in terms of ZrO2; the content of the Sr element in the carrier is 0.1-10 wt% in terms of SrO; and the remaining is A12O3. The solid base is used for regeneration of anthraquinone degradation products, and has the advantages of difficult loss of an alkaline center and an oleophobic center, high mechanicalstrength, good regeneration effect and the like.

Description

technical field [0001] The invention relates to a solid base and a preparation method thereof, in particular to a solid base used for regeneration of anthraquinone degradation products in working liquids and a preparation method thereof. Background technique [0002] Hydrogen peroxide is an important inorganic chemical raw material and fine chemical product. It is widely used in many fields such as chemical industry, textile, papermaking, food, medicine, chemical synthesis, environmental protection, etc. It is also closely related to improving the quality and level of national life. At present, the main technology for producing hydrogen peroxide at home and abroad is the anthraquinone method. The principle of this method is to first dissolve alkyl anthraquinone (such as: 2-ethyl anthraquinone) in an appropriate mixed solvent to prepare a working solution; then carry out hydrogenation reaction under the action of a catalyst to reduce alkyl anthraquinone to base hydrogen anth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38C07C46/00C07C50/18
CPCB01J31/38C07C46/00C07C2603/24B01J35/615C07C50/18
Inventor 张信伟马传军王海洋李杰
Owner CHINA PETROLEUM & CHEM CORP
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