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Composite molecular sieve film based on paper-shaped gradient metal microfibers as well as preparation method and application thereof

A composite molecular sieve and metal microfiber technology, applied in molecular sieve catalysts, chemical instruments and methods, water/sludge/sewage treatment, etc. Effect

Inactive Publication Date: 2013-12-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zhang Huiping of South China University of Technology (Chinese patent CN102861609A) overcomes these defects and prepares a gradient composite molecular sieve membrane material for use in stainless steel circular tube reactors. Rotating basket reactor has not been reported yet

Method used

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  • Composite molecular sieve film based on paper-shaped gradient metal microfibers as well as preparation method and application thereof
  • Composite molecular sieve film based on paper-shaped gradient metal microfibers as well as preparation method and application thereof
  • Composite molecular sieve film based on paper-shaped gradient metal microfibers as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Preparation of carrier: Adhesive, metal fiber, and water are mixed according to 1:1:100 (weight ratio) to form a mixture, and the mixture is stirred at high speed in a fiber standard dissociator to form a uniform slurry; the obtained slurry is made by wet papermaking process Make a paper-type sintered metal microfiber carrier precursor; dry the obtained paper-type sintered metal microfiber carrier precursor at 105 °C; dry the dried paper-type sintered metal microfiber carrier precursor at 600 °C under N2 Sintering in the atmosphere for 60 minutes to prepare a paper-like sintered metal microfiber carrier with a three-dimensional network structure;

[0030] (2) Surface pretreatment of the carrier: Cut the carrier obtained in step (1) into a rectangle (length 4cm, height 10cm), soak in 5wt% NaOH aqueous solution and 5wt% H2SO4 aqueous solution for 60min, use Naturally dry after washing with deionized water. The carrier is placed in a muffle furnace, calcined at 500°C ...

Embodiment 2

[0037] (1) Preparation of the carrier: The adhesive and the metal fiber are mixed with water at a weight ratio of 1:3:500 to form a mixture, and the mixture is stirred at a high speed in a fiber standard dissociator to form a uniform slurry; the obtained slurry is made by using a wet papermaking process Paper-type sintered metal microfiber carrier precursor; dry the obtained paper-type sintered metal microfiber carrier precursor at 105°C; dry the dried paper-type sintered metal microfiber carrier precursor at 1400°C in H2 atmosphere Sintering for 10 minutes to obtain a paper-like sintered metal microfiber carrier with a three-dimensional network structure;

[0038] (2) Surface pretreatment of the carrier: cut the carrier obtained in step (1) into a rectangle (length 4cm, height 10cm), soak in 10wt% NaOH aqueous solution and 10wt% H2SO4 aqueous solution for 30min, wash with deionized water Let dry naturally. The carrier is placed in a muffle furnace, calcined at 600°C for 2h, ...

Embodiment 3

[0045] (1) Preparation of the carrier: The adhesive and metal fibers are mixed with water according to the weight ratio of 1:2:400 to form a mixture, and the mixture is stirred at a high speed in a fiber standard dissociator to form a uniform slurry; the obtained slurry is made by using a wet papermaking process Paper-type sintered metal microfiber carrier precursor; drying the obtained paper-type sintered metal microfiber carrier precursor at 150°C; drying the dried paper-type sintered metal microfiber carrier precursor at 1000°C in N2 atmosphere Sintering for 60 minutes to obtain a paper-like sintered metal microfiber carrier with a three-dimensional network structure;

[0046] (2) Surface pretreatment of the carrier: Cut the carrier obtained in step (1) into a rectangle (length 4cm, height 10cm), soak in 5wt% NaOH aqueous solution and 5wt% H2SO4 aqueous solution for 45min, wash with deionized water Let dry naturally. The carrier is placed in a muffle furnace, calcined at 5...

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Abstract

The invention discloses a composite molecular sieve film based on paper-shaped gradient metal microfibers as well as a preparation method and an application thereof. The preparation method of the composite molecular sieve film comprises the steps of dosing a tackiness agent, a metal fibre and water according to the weight ratio at 1 to (1-3) to (100-500), utilizing a wet method paper technology to prepare a front driving body, sintering to prepare a paper-shaped sintering metal microfiber carrier with a three-dimensional network structure, utilizing a NaOH water solution and a H2SO4 water solution to soak, and sintering so as to obtaining the carrier; utilizing cetyl trimethyl ammonium bromide, ethyl orthosilicate and ammonium hydroxide to prepare a seed crystal; enabling a seed crystal solution to dissolve in an ethanol solution so as to obtain a molecular sieve powder impregnation liquid, putting the carrier into the molecular sieve powder impregnation liquid to soak, drying so as to obtain the paper-shaped sintering metal microfiber carrier of a pre-planting plant; washing and calcining a product after secondary growth so as to obtain the paper-shaped gradient metal microfiber composite molecular sieve film. The composite molecular sieve film provided by the invention has the advantages of being continuously compact, adjustable in thickness, applicable tp the wet-type catalytic oxidation of phenolic wastewater, and high in reaction efficiency.

Description

technical field [0001] The invention belongs to the technical field of wet catalytic oxidation treatment of phenol-containing wastewater, in particular to a catalytic rotating basket reactor based on a paper-like gradient metal microfiber composite molecular sieve membrane. Background technique [0002] In recent years, many countries and regions have paid more and more attention to environmental protection. Industrial organic wastewater is highly toxic and difficult to degrade, which has brought great harm to the ecological environment and human health. How to efficiently treat industrial organic wastewater has become an environmental protection aspect. Hot spots of concern. [0003] Phenol and phenolic substances, as the most common substances in organic wastewater discharged from pharmaceutical, petrochemical, chemical and other industries, have become representative substances in the research of industrial organic wastewater degradation. At present, there are mainly phy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/00B01J35/02C02F1/74C02F101/34
Inventor 鄢瑛欧晓霞张会平
Owner SOUTH CHINA UNIV OF TECH
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