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Double-mesoporous Co-TUD-1 molecular sieve and preparation method thereof

A technology of TUD-1 and co-tud-1, which is applied in the direction of molecular sieve catalysts, molecular sieve compounds, molecular sieve characteristic silicates, etc., can solve the problem of single structure and achieve the effect of narrow pore size distribution and large specific surface area

Active Publication Date: 2019-02-22
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a double mesoporous Co-TUD-1 molecular sieve and a preparation method thereof, aiming at solving the problem that the existing Co-TUD-1 material has a single structure and Co-TUD-1 The study of properties and their catalytic performance has certain limitations

Method used

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  • Double-mesoporous Co-TUD-1 molecular sieve and preparation method thereof
  • Double-mesoporous Co-TUD-1 molecular sieve and preparation method thereof
  • Double-mesoporous Co-TUD-1 molecular sieve and preparation method thereof

Examples

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Effect test

Embodiment 1

[0047] 0.078g Co(en) 3 Cl 3 Dissolve in 3.57g of deionized water, add 10.0g of Tetraethyl orthosilicate (TEOS) dropwise during stirring, then add 7.05g of triethanolamine (Triethanolamine, TEA), stir at room temperature for 1 hour, and then add 6.05g of tetraethyl Tetraethylammonium hydroxide (TEAOH); aging at room temperature for 24 hours, followed by drying at 100°C for 24 hours to obtain a crude product; transfer the crude product to an autoclave (lined with polytetrafluoroethylene) for crystallization at 150°C for 6 hours , after crystallization, perform suction filtration on a vacuum pump, wash with deionized water for 3-5 times, and finally put the obtained solid in a high-temperature furnace at 500°C for 4 hours; the Co content in the prepared Co-TUD-1 is 0.5 wt%, so the Co-TUD-1 prepared in this example is named Co-0.5.

Embodiment 2

[0049] The difference from Example 1 is that Co(en) 3 Cl 3 The addition amount of TEA is 0.155 g, the addition amount of TEA is 6.95 g, and the rest of the preparation conditions are the same as in Example 1; the Co content in the prepared Co-TUD-1 is 1.0wt%, so the Co-TUD-1 prepared in this example TUD-1 is named Co-1.

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Abstract

The invention discloses a double-mesoporous Co-TUD-1 molecular sieve and a preparation method thereof. The double-mesoporous Co-TUD-1 molecular sieve has a double-mesoporous structure including a small mesopore and a large mesopore, wherein the pore diameter of the small mesopore is 7 to 8nm and the pore diameter of the large mesopore is 12 to 13nm. The double-mesoporous Co-TUD-1 molecular sieve disclosed by the invention has narrow silicon pore diameter distribution and a large specific surface area; and the Co-TUD-1 molecular sieve becomes a nano catalysis material with a great potential byutilizing Co<2+> which is highly dispersed on a carrier, and double-mesoporous structural characteristics thereof.

Description

technical field [0001] The invention relates to the technical field of supported oxidation catalysts, in particular to a double mesoporous Co-TUD-1 molecular sieve and a preparation method thereof. Background technique [0002] Dual mesoporous materials are a new type of porous materials developed on the basis of mesoporous molecular sieves in recent years. There are two kinds of mesoporous structures with different pore sizes in this material. The large mesopores can allow larger-sized molecules to enter, and serve as a channel for material transmission, with small diffusion resistance; the small mesopores serve as adsorption points and reaction sites for substances. It has good shape-selective catalytic ability. This feature of double mesoporous materials makes it have great development potential in petrochemical, fine chemical, pharmaceutical industry and production of special polymer materials. At present, people's research on dual-mesoporous materials is still in the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B37/00B01J29/76
CPCB01J29/76B01J2229/186C01B37/005C01P2006/12C01P2006/14C01P2006/16
Inventor 杜宇王泉刘振华周嘉熙叶杰雄
Owner SHENZHEN UNIV