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Process for producing calcium doped mesoporous zirconium oxide powder

A technology of mesoporous zirconia and powder, which is applied in zirconia and other directions to achieve the effects of low price, improved emission intensity and elimination of dissipation effect

Inactive Publication Date: 2009-05-13
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, calcium-doped mesoporous zirconia materials have not been reported

Method used

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  • Process for producing calcium doped mesoporous zirconium oxide powder
  • Process for producing calcium doped mesoporous zirconium oxide powder
  • Process for producing calcium doped mesoporous zirconium oxide powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 1) Zirconium sulfate (ZrSO 4· 4H 2 O) dissolved in 1.5×10 -3 In the ammonium sulfate solution of mol / L, the zirconium sulfate solution that configuration concentration is 0.6mol / L;

[0029] 2) Dissolve cetyltrimethylammonium bromide in 1.5×10 -3 In the ammonium sulfate solution of mol / L, be made into the surfactant solution that concentration is 0.65mol / L;

[0030] 3) Mix the solution obtained in 1) and 2) evenly, age at room temperature for 3 hours, heat the solution in water at 110°C for 12 hours, filter the solution, wash, and dry to obtain a precursor powder;

[0031] 4) dissolving calcium chloride in deionized water to prepare a calcium-containing aqueous solution with a concentration of 1mol / L;

[0032] 5) Mix the calcium-containing aqueous solution in 4) with the precursor powder prepared in 3) at a ratio of 5 mL / g in 0.25 mol / L H 3 PO 4 The solution was mixed and stirred for 3 hours to obtain a calcium-doped mesoporous zirconia powder precursor.

[0033] ...

Embodiment 2

[0036] Zirconium sulfate (ZrSO 4· 4H 2 O) soluble in 1.0×10 -3 In the ammonium sulfate solution of mol / L, configure the zirconium sulfate solution that concentration is 0.5mol / L;

[0037] Dissolve cetyltrimethylammonium bromide in 1.0×10 at 40°C -3 In the ammonium sulfate solution of mol / L, be made into the surfactant solution that concentration is 0.5mol / L;

[0038] 1) Mix the solution obtained in 1) and 2) evenly, age at room temperature for 24 hours, and heat the solution at 110°C for 36 hours, then filter, wash and dry the solution to obtain a precursor powder;

[0039] 2) dissolving calcium chloride in deionized water to prepare a calcium-containing aqueous solution with a concentration of 0.5mol / L;

[0040]3) Mix the calcium-containing aqueous solution in 4) with the precursor powder prepared in 3) at a ratio of 2.5 mL / g at 0.1 mol / LH 3 PO 4 The solution was mixed and stirred for 3 hours to obtain a calcium-doped mesoporous zirconia powder precursor.

[0041] 4) C...

Embodiment 3

[0043] 1) Zirconium sulfate (ZrSO 4· 4H 2 O) dissolved in 2×10 -3 In the ammonium sulfate solution of mol / L, configuration concentration is the ammonium sulfate solution of the zirconium sulfate of 0.8M;

[0044] 2) Dissolve cetyltrimethylammonium bromide in 2×10 at 40°C -3 mol / L ammonium sulfate solution to form a 1M aqueous solution;

[0045] 3) Mix the solution obtained in 1) and 2) evenly, age at room temperature for 28 hours, heat the solution in water at 110°C for 24 hours, filter the solution, wash, and dry to obtain a precursor powder;

[0046] 4) dissolving calcium chloride in deionized water to prepare a calcium-containing aqueous solution with a concentration of 1.5mol / L;

[0047] 5) Mix the calcium-containing aqueous solution in 4) with the precursor powder prepared in 3) at a ratio of 10 mL / g at 0.25 mol / LH 3 PO 4 The solution was mixed and stirred for 3 hours to obtain a calcium-doped mesoporous zirconia powder precursor.

[0048] 6) Calcining the powder p...

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Abstract

The invention relates to a ZrO2 material and the preparation method of a Ca-doped mesoporous ZrO2 powder. The preparation method comprises the following steps: dissolving Zr(SO4)2 in (NH4)2SO4 solution to obtain Zr(SO4)2 solution; dissolving a surfactant in the (NH4)2SO4 solution to obtain solution A; mixing solution A with the Zr(SO4)2 solution; aging; carrying out Zr(SO4)2 after hydrothermal; filtering; washing; drying to obtain a precursor powder; dissolving an inorganic calcium source in water to obtain an inorganic calcium source solution; adding the inorganic calcium source solution and the precursor powder in H3PO4 solution; mixing and stirring to obtain a Ca-doped mesoporous ZrO2 powder precursor; and calcining the Ca-doped mesoporous ZrO2 powder precursor to obtain the Ca-doped mesoporous ZrO2 powder.

Description

technical field [0001] The invention relates to a zirconia material, in particular to a method for preparing calcium-doped mesoporous zirconia powder. Background technique [0002] Since Mobile Company (Kresge C T, Leonowlcz M E, Roth W J et al. Nature, 1992, 359: 710-712.) reported MS41 molecular sieves in 1992, this type has regular pore structure, high specific surface area, and narrow pore size distribution. Ordered nanostructured materials have aroused great interest from all over the world (Corma, A. Chem. Rev. 1997, 97, 2373.). [0003] Zirconia material is an ideal multifunctional catalyst because it has both acidic and basic surface centers and good ion exchange performance, especially as an industrial catalyst and catalyst carrier. [0004] In recent years, the study of various properties of porous materials, especially the study of fluorescence properties has become the focus of many researchers. Since the mesoporous material has a regular aperture arrangement, ...

Claims

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Application Information

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IPC IPC(8): C01G25/02
Inventor 冯祖德孙婧婧
Owner XIAMEN UNIV
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