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Cobalt-doped MCM-48 catalyst

A technology of MCM-48 and catalyst, which is applied in the field of cobalt-doped MCM-48 catalyst and its preparation, can solve the problems that the catalyst cannot be effectively recovered, the secondary pollution of water and products, and the increase of operating costs, etc., so as to prevent secondary pollution , Eliminate product pollution and reduce production costs

Inactive Publication Date: 2017-12-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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AI Technical Summary

Problems solved by technology

However, most of the catalysts currently studied are added in an ionic state, and the added catalysts cannot be effectively recovered, and they need to be replenished regularly, which increases the operating cost. Product secondary pollution and other issues

Method used

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  • Cobalt-doped MCM-48 catalyst
  • Cobalt-doped MCM-48 catalyst
  • Cobalt-doped MCM-48 catalyst

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Embodiment Construction

[0021] A cobalt-doped MCM-48 catalyst is a solid-phase catalyst, and transition metal cobalt is incorporated into the framework of MCM-48, wherein the ratio of cobalt to silicon is 0.025-0.075:0.9-1, preferably 0.05:0.95.

[0022] Its preparation method comprises the following steps:

[0023] Dissolve sodium hydroxide in deionized water, then add CTAB to the above sodium hydroxide solution, and at the same time perform magnetic stirring in a water bath environment at 40°C. After stirring evenly, add tetraethyl orthosilicate dropwise in sequence And cobalt nitrate solution, the reaction time is 2 hours; after the reaction is completed, the product is poured into a high-pressure reactor, and crystallized at a constant temperature at 100 ° C for three days. Once, filter with suction, dry at 90°C for 24 hours, and finally calcine at 550°C for 6 hours to obtain cobalt-doped MCM-48 mesoporous molecular sieve catalyst.

[0024] The mass ratio of the total reaction material is Co(NO ...

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Abstract

The invention discloses a cobalt-doped MCM-48 catalyst which is a solid phase catalyst. The transition metal cobalt is fused in the framework of MCM-48, wherein the ratio of cobalt to silicon is (0.025-0.075):(0.9-1). The invention also discloses a preparation method for the catalyst. In the cobalt-doped MCM-48 catalyst disclosed by the invention, the transition metal cobalt is introduced into the framework of MCM-48 in the manner of fusion. The cobalt-doped MCM-48 catalyst is applied to the magnesium sulfite oxidization in magnesium desulphurization and the ammonium sulfite oxidization in ammonium desulphurization.

Description

technical field [0001] The invention relates to a cobalt-doped MCM-48 catalyst and a preparation method thereof, and the catalyst is used for magnesium method and ammonium method desulfurization. Background technique [0002] Since the successful synthesis of the M41S series of mesoporous materials in 1992, major breakthroughs have been made in the fields of catalysis, adsorption, and energy storage. Among them, MCM-48 with a cubic phase has two independent three-dimensional pore structures and mirror symmetry. It is beneficial to the transportation of guest molecules in catalysis and separation, and MCM-48 itself has the advantages of uniform pore size, regular pore channels, and large specific surface area of ​​mesoporous molecular sieves. Small exchange capacity, low acid content and acid strength, and low reactivity limit their applications in catalysis, adsorption, separation, and environmental protection. [0003] Magnesium method and ammonium method in wet desulfuriz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03
CPCB01J29/0333B01J35/1019B01J35/1023B01J35/1028B01J35/1042B01J35/1047B01J35/1057B01J35/1061
Inventor 汪黎东伍思宇王浩漆丹
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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