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Organic complex supported activated carbon adsorbent and its preparation method and application

An organic complex and activated carbon adsorption technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problem of low removal efficiency, achieve high safety, inhibit decomposition, and low energy consumption

Inactive Publication Date: 2007-10-17
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] The purpose of the present invention is to provide an organic complex-loaded activated carbon adsorbent for the existing activated carbon-based adsorbent that promotes the decomposition of hydrogen peroxide and has low removal efficiency for various metal ions. The loading modification of the selected activated carbon by the complexing component can inhibit the decomposition and promotion of the activated carbon to hydrogen peroxide, and at the same time, it can better maintain the adsorption capacity of various organic substances in the hydrogen peroxide solution, while the added organic complex Various metal ions in the hydrogen peroxide solution can form complexes or precipitate and adsorb on the organic complex-loaded activated carbon adsorbent, so that the hydrogen peroxide solution can be purified

Method used

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  • Organic complex supported activated carbon adsorbent and its preparation method and application
  • Organic complex supported activated carbon adsorbent and its preparation method and application
  • Organic complex supported activated carbon adsorbent and its preparation method and application

Examples

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Embodiment 1

[0040] Prepare the organic complex-loaded activated carbon adsorbent of the present invention according to the following steps, and carry out the operation of adsorption and purification of hydrogen peroxide solution.

[0041] (1) Get 10g of activated carbon with the macroscopic structure required by the present invention as a carrier, use 100ml concentration of dilute hydrochloric acid solution of 10% by weight to soak for 2 hours at 50°C, clean, filter out the acid solution, then use 1000ml of deionized Repeated soaking, washing, and drying in water for 5 times, and drying at 120°C;

[0042] (2) 0.21 g of the ammonium salt (I) of N-nitrosophenyl hydroxylamine was weighed and dissolved in 30 ml of acetone to obtain an impregnation solution;

[0043] (3) prepare 2.0% weight acetone aqueous solution as eluent, for subsequent use;

[0044] (4) Place the activated carbon pretreated in step (1) in a closed container with stirring, vacuumize for 3 hours, and keep the vacuum at 9.5...

Embodiment 2～3

[0054] Only the step (2) in Example 1 was changed, and 0.42 g and 0.62 g of N-nitrosophenyl hydroxylamine ammonium salt (I) were weighed respectively, and the rest of the steps were carried out according to Example 1. Make the ammonium salt of N-nitrosophenyl hydroxylamine account for respectively the ammonium salt loaded active carbon adsorbent of adsorbent about 4%, the N-nitrosophenyl hydroxylamine of 6% weight, be used for hydrogen peroxide solution then purification.

Embodiment 4

[0056] Only the step (2) in Example 1 was changed, and 0.21 g of N-nitrosonaphthyl hydroxylamine ammonium salt (II) was weighed, and the rest of the steps were carried out according to Example 1. Prepare the N-nitrosonaphthyl hydroxylamine ammonium salt loaded activated carbon adsorbent in which the N-nitroso naphthyl hydroxylamine ammonium salt accounts for about 2% by weight of the adsorbent, and then use it for the purification of the hydrogen peroxide solution. .

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Abstract

The invention relates to an organic complex supported activated carbon adsorbent, which has activated carbon as a carrier and organic complex distributed on a pore path of the activated carbon. The preparing method comprises: immerging the activated carbon treated by vacuumizing in a maceration extract; removing solvent by vacuumizing; leaching the sample using an eluate while vacuum filtrating; and washing the the sample using deionized water while vacuum filtrating. The adsorbent is applicable for purifying peroxide (H2O2) solution by a way of: adding the adsorbent into the peroxide solution, absorbing and filtering the mixture to effectively remove organic matter impurity from the peroxide solution as well as remove various metallic iron impurities such as Al, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Rb, Sr, Mo, Ag, Sb, W, Au, Hg, etc., thus the aim of purification is achieved. Accordingly, the adsorbent of the invention is suitable for purifying of peroxide solution, in particular commercial grade peroxide solution having more organic matter impurity.

Description

technical field [0001] The invention relates to an organic complex loaded activated carbon adsorbent and a preparation method thereof. [0002] The present invention also relates to the use of the adsorbent in the purification of hydrogen peroxide (H 2 o 2 ) solution method. Background technique [0003] Hydrogen peroxide (H 2 o 2 ) can be used as oxidizing agent, bleaching agent, disinfectant, polymerization initiator and crosslinking agent, etc., and plays an important role in many fields such as chemical industry, electronics, military industry and aerospace. Depending on the scope of application, H 2 o 2 It is divided into four grades: industrial grade, reagent grade, pharmaceutical grade and electronic grade, and electronic grade hydrogen peroxide can be divided into conventional semiconductor grade (all kinds of metal ion content is less than 100ppb), fine electronic grade SEG (all kinds of metal ion content less than 10ppb) and ultra-high-purity grade RGS (vari...

Claims

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Application Information

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IPC IPC(8): B01J20/22B01J20/20
Inventor 耿建铭钱宇
Owner SOUTH CHINA UNIV OF TECH
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