Preparation method of cu/stainless steel wire mesh catalyst loaded ZSM-5 molecular sieve membrane reactor

A ZSM-5, membrane reactor technology, applied in the field of preparation of new catalytic materials, to achieve low pressure drop, high thermal stability, and broad application prospects

Inactive Publication Date: 2011-12-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For practical application considerations, molecular sieve membranes must be supported on some shaped carriers, and suitable catalyst materials are selected as substrates to prepare molecular sieve membrane reactors. ZSM-5 molecular sieve membranes are assembled with stainless steel wire mesh surface-supported catalysts. Preparation technology work has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The stainless steel wire mesh is processed into the required specifications and made into a honeycomb shape. Under the condition of 50°C, it is cleaned in a detergent solution with a concentration of 0.075wt% for 15min to remove the oil stain on the surface of the stainless steel wire mesh;

[0034] The stainless steel wire mesh treated above was soaked in 15wt% dilute hydrochloric acid for 15min to remove scale;

[0035] Shake the activated stainless steel wire mesh for 15 minutes under ultrasonic conditions;

[0036] The pretreated stainless steel wire mesh was completely immersed in a concentration of 20 wt% H 2 SO 4 In the electrolyte solution, the current density is controlled to 0.80A / dm 2 , the voltage is 3.0V, the time is 20min, and the stainless steel wire mesh with the porous structure is obtained;

[0037] The metal copper was used as the anode, the anodized stainless steel wire mesh was used as the cathode, and the electrolyte was 10wt% CuSO 4 solution, ...

Embodiment 2

[0042] The stainless steel wire mesh is processed into the required specifications and made into a honeycomb shape. Under the condition of 55 ° C, it is cleaned in a detergent solution with a concentration of 0.10wt% for 20 minutes to remove the oil stains on the surface of the stainless steel wire mesh;

[0043] The above-treated stainless steel wire mesh was soaked in 15wt% dilute hydrochloric acid for 20min to remove scale;

[0044] Shake the activated stainless steel wire mesh under ultrasonic conditions for 20min;

[0045] The pretreated stainless steel wire mesh was completely immersed in a concentration of 20 wt% H 2 SO 4 In the electrolyte solution, the current density is controlled to 1.00A / dm 2 , the voltage is 3.5V, the time is 25min, and the stainless steel wire mesh with the porous structure is obtained;

[0046] The metal copper was used as the anode, the anodized stainless steel wire mesh was used as the cathode, and the electrolyte was 10wt% CuSO 4 solution...

Embodiment 3

[0051] The stainless steel wire mesh is processed into the required specifications and made into a honeycomb shape. Under the condition of 60 ° C, it is cleaned in a detergent solution with a concentration of 0.15wt% for 25 minutes to remove the oil stains on the surface of the stainless steel wire mesh;

[0052] The stainless steel wire mesh treated above was soaked in 15wt% dilute hydrochloric acid for 25min to remove scale;

[0053] Shake the activated stainless steel wire mesh under ultrasonic conditions for 25min;

[0054] The pretreated stainless steel wire mesh was completely immersed in a concentration of 20 wt% H 2 SO 4 In the electrolyte solution, the current density is controlled to 1.20A / dm 2 , the voltage is 4.0V, the time is 30min, and the stainless steel wire mesh with the porous structure is obtained;

[0055] The metal copper was used as the anode, the anodized stainless steel wire mesh was used as the cathode, and the electrolyte was 10wt% CuSO 4 The solu...

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PUM

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Abstract

The invention relates to the preparation of a catalytic material, and aims to provide a method for preparing a zeolite socony mobile-5 (ZSM-5) molecular sieve membrane reactor loaded with a Cu / stainless steel screen mesh catalyst. The method comprises the following steps of: pretreating a stainless steel screen mesh, and immersing into H2SO4 electrolyte solution to perform anodic oxidation treatment, so that a porous structure is formed on the surface of the stainless steel screen mesh; electrodepositing a Cu component on the surface of the stainless steel screen mesh; adding deionized water into a template agent, stirring at room temperature, and putting into a crystallization kettle, and immersing the Cu / stainless steel screen mesh catalyst into the solution to perform hydrothermal crystallization; and washing by using the deionized water until the solution is neutral, drying, and calcining in an air atmosphere. The ZSM-5 molecular sieve membrane reactor has the advantages of high mechanical strength, low pressure drop, high heat stability, flexible and adjustable aperture and the like, and can be used for various catalytic reactions, such as the selective hydrogenation of alkyne and alkadiene, the preparation of synthesis gas by the partial oxidation of methane, selective catalytic disproportionation of methylbenzene and the like. The novel molecular sieve membrane reactor has a wide application prospect in processes of catalysis, separation and the like.

Description

technical field [0001] The invention relates to a preparation method of a novel catalytic material, in particular to a preparation method of a ZSM-5 molecular sieve membrane reactor supported on a Cu / stainless steel wire mesh catalyst. Background technique [0002] Molecular sieve membrane is a kind of important inorganic membrane material. In addition to chemical stability, hydrothermal stability and mechanical stability, it also has excellent characteristics such as uniform pore size distribution and pore surface modification. Among the many molecular sieve membranes, ZSM-5 molecular sieve membrane is the most widely studied type at present. Since the pore size of ZSM-5 molecular sieve is about 0.55nm, it can be used for the separation of some small molecules and macromolecules, so as to realize the molecular sieve effect. The catalyst and the molecular sieve membrane are combined through a specific preparation technology, so that some small molecules can pass through the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C01B3/40B01J23/745B01J23/72B01J35/10
CPCY02P20/52
Inventor 高园园陈敏凌晨
Owner ZHEJIANG UNIV
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