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Magnetic hydrotalcite composite and process for manufacturing same

一种磁性水滑石、复合材料的技术，应用在水滑石、无机材料磁性、化学仪器和方法等方向，能够解决紫外线吸收机能降低等问题

Inactive Publication Date: 2016-04-06
KYOWA CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, organic substances having ultraviolet absorbing functions such as 2,4-dihydroxybenzophenone are gradually decomposed after a period of time, so there is a disadvantage that ultraviolet absorbing functions are lowered.

Method used

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  • Magnetic hydrotalcite composite and process for manufacturing same
  • Magnetic hydrotalcite composite and process for manufacturing same
  • Magnetic hydrotalcite composite and process for manufacturing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0116] [MgFe 2 o 4 -Mg 3 Al(OH) 8 Preparation of Cl Composite Particles (5.0 wt% Composite)]

[0117]

[0118] MgCl 2 ·6H 2 O-9 1.5g (0.45 moles) and AlCl 3 ·6H 2 O-36.22 g (0.15 mol) was added to 400 ml of deionized water to prepare an aqueous solution containing Mg and Al. Next, after maintaining this aqueous solution at 40° C. for 0.5 hours, 357.2 ml (1.25 mol) of a 3.50 mol / liter NaOH solution was dropped over 20 minutes. The liquid containing the precipitate was kept at 40°C and stirred for 1 hour, then hydrothermally treated in a 1.0-liter autoclave at 170°C for 8 hours, the precipitate was filtered, washed with water, and dried at 185°C to obtain a hydrotalcite compound Powder 45g.

[0119]As a result of analysis by an X-ray diffraction apparatus (Rigaku X-RAYDIFFRACTOMETERRINT2200) of copper Kα rays, it was confirmed that the obtained powder had a hydrotalcite structure. In addition, as a result of analysis by a fluorescent X-ray measurement device (RigakuX...

Embodiment 2

[0125] [MgFe 2 o 4 -Mg 3 Al(OH) 8 Preparation of Cl Composite Particles (30.0 wt% Composite)]

[0126]

[0127] Same as Example 1.

[0128] 2 o 4 Composite processing of particle-like>

[0129] Add 20 g of the above-mentioned Mg-Al-based Cl-type hydrotalcite powder into 400 ml of deionized water, and disperse at 40°C for 1 hour, then the MgCl-containing 2 ·6H 2 O-6.1g (0.03 mole) and FeCl 3 ·6H 2 250 ml of aqueous solution of O-16.22g (0.06 mol) and 68.57 ml (0.24 mol) of 3.5 mol / liter NaOH solution were added to the above-mentioned Mg-Al type Cl-type hydrotalcite suspension with a peristaltic pump for 30 minutes at the same time. Thereafter, heat treatment was performed at 85° C. for 1 hour, and the precipitate was filtered off, washed with water, and dried at 185° C. to obtain 27.5 g of Mg-based magnetic / Mg-Al-based Cl-type hydrotalcite precursor powder. As a result of X-ray diffraction analysis of copper Kα rays, it was confirmed that the obtained powder had a h...

Embodiment 3

[0133] [MgFe 2 o 4 -Mg 3 Al(OH) 8 Preparation of Cl Composite Particles (100.0 wt% Composite)]

[0134]

[0135] Same as Example 1.

[0136] 2 o 4 Composite processing of particle-like>

[0137] Add 20 g of the above-mentioned Mg-Al-based Cl-type hydrotalcite powder into 400 ml of deionized water, and disperse at 40°C for 1 hour, then the MgCl-containing 2 ·6H 2 O-20.33g (0.1 mole) and FeCl 3 ·6H 2 300 ml of aqueous solution of O-54.06g (0.2 mol) and 228.57 ml (0.8 mol) of 3.5 mol / liter NaOH solution were added to the above-mentioned Mg-Al type Cl-type hydrotalcite suspension with a peristaltic pump for 50 minutes at the same time. Thereafter, heat treatment was performed at 85° C. for 1 hour, and the precipitate was filtered off, washed with water, and dried at 185° C. to obtain 43.0 g of Mg-based magnetic / Mg-Al-based Cl-type hydrotalcite precursor powder. As a result of X-ray diffraction analysis of copper Kα rays, it was confirmed that the obtained powder had a ...

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PUM

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Abstract

The purpose of the present invention is to provide: a magnetic hydrotalcite composite which is useful in wastewater treatment, ultraviolet absorption, electromagnetic wave absorption, acid gas absorption or other fields; and a process for manufacturing the same. A magnetic hydrotalcite composite which comprises an inner layer and an outer layer and in which the inner layer is made of a hydrotalcite compound and the outer layer is made of a ferrite compound.

Description

technical field [0001] The present invention relates to a magnetic hydrotalcite composite material that can be used as an adsorbent, an electromagnetic wave absorber and an ultraviolet absorber and a manufacturing method thereof. Background technique [0002] Patent Document 1 describes a method for synthesizing a hydrotalcite-based compound that reuses industrial waste steel slag and can be used as an anion adsorbent or the like. The general formula of the hydrotalcite compound synthesized by this method is given by [Ca 2+a－x MxAlO 3+b ]A y shown. When the hydrotalcite-based compound having such a structure is fired alone, the generated oxide aggregates and has disadvantages such as low activity. In addition, since it has only a single hydrotalcite structure, there is a disadvantage that the types of ions that can be adsorbed are limited. [0003] Non-Patent Document 1 describes a method for treating selenium by GreenRust (GR) and a method for producing a hydrotalcite-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/00B01J20/04B01J20/08C01G49/00C02F1/28C02F1/42H01F1/34C01F7/785
CPCH01F1/34B01J20/043B01J20/3078B01J20/3085B01J20/0229B01J20/28009B01J20/0277C02F1/281C02F1/288C02F2101/006C02F2101/103C02F2101/105C02F2101/14C02F2101/206C02F2101/22C01G37/006C01G49/009C01G53/006C01P2002/22C01P2004/80C01P2006/42C01P2002/72C01P2004/03C01F7/785C01F7/00C01G49/0009C01G49/0018C02F1/28H01F1/11
Inventor 王兴东岩本祯士根立浩一
Owner KYOWA CHEM IND
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