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Nano-scale silicon-based Ti and Al heterogeneous catalyst as well as preparation method and application of nano-scale silicon-based Ti and Al heterogeneous catalyst

A heterogeneous catalyst, nano-scale technology, applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as misjudgment of adsorption of Pb

Inactive Publication Date: 2015-03-25
HUNAN AGRICULTURAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] All of the above technologies have carried out corresponding in-depth research on Ti and Al doped silicon-based heterogeneous catalysts, but they have not considered the impact of calcination process parameters on the nanoscale microstructure of mesoporous material catalysts, and then in the adsorption of Pb. 2+ Misjudgments in performance

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  • Nano-scale silicon-based Ti and Al heterogeneous catalyst as well as preparation method and application of nano-scale silicon-based Ti and Al heterogeneous catalyst
  • Nano-scale silicon-based Ti and Al heterogeneous catalyst as well as preparation method and application of nano-scale silicon-based Ti and Al heterogeneous catalyst
  • Nano-scale silicon-based Ti and Al heterogeneous catalyst as well as preparation method and application of nano-scale silicon-based Ti and Al heterogeneous catalyst

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Embodiment Construction

[0069] The present invention can be further clearly understood through the specific examples of the present invention given below, but they are not intended to limit the present invention. Parts not described in detail in the specific embodiments are obtained by using existing technologies, known technical means and industry standards.

[0070] Unless otherwise stated, the percentages used in the present invention are all percentages by weight.

[0071] 1. Preparation of nano-scale silicon-based Ti and Al heterogeneous catalysts

[0072] (1) Synthesis of SBA-15 (6.5nm)

[0073] Add 64mL of deionized water, 8.2mL of concentrated HCl (37%) and 2.0g of P123 (polyethoxy-polypropoxy-polyethoxy triblock compound, template) into a 250mL three-necked flask in sequence, in a water bath at 45°C Heated and stirred for 3 to 4 hours until P123 was completely dissolved and the reaction mixture was transparent. Then add 4.27g TEOS (tetraethoxysilane) dropwise, keep heating, and continue t...

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Abstract

The invention discloses a nano-scale silicon-based Ti and Al heterogeneous catalyst as well as a preparation method and application of the nano-scale silicon-based Ti and Al heterogeneous catalyst. The nano-scale silicon-based Ti and Al heterogeneous catalyst is prepared according to the steps: step 1, synthesizing nano SBA-15 mesoporous molecular sieves; step 2, preparingTi-SBA-15; and step 3, preparing Al-Ti-SBA-15. Baking process parameters and mole rates of all raw materials are strictly controlled, the prepared silicon-based Ti and Al heterogeneous catalysts Al-Ti-SBA-15 (3.6:1) and Ti-Al-SBA-15 (1:1) have a hexagonal cylindrical microstructure with ordered mesopores with the thickness of 6.5 nm, and the adsorption rate for adsorbing Pb<2+> in wastewater with Pb<2+> concentrationless than 400 ppm reaches more than 99.5 percent.

Description

technical field [0001] The invention relates to the technical field of bimetallic-doped mesoporous material SBA-15 catalyst, and particularly discloses a nano-scale silicon-based Ti and Al heterogeneous catalyst and its preparation method and application. Background technique [0002] According to the regulations of the International Union of Pure and Applied Chemistry (IUPAC), mesoporous materials refer to a class of porous materials with a pore size ranging from 2 to 50 nm. Mesoporous materials have the characteristics of extremely high specific surface area, regular and orderly pore structure, narrow pore size distribution, and continuously adjustable pore size, making it suitable for the adsorption and separation of macromolecules that are difficult for many microporous zeolite molecular sieves, especially function in catalytic reactions. [0003] According to the classification of chemical composition, mesoporous materials can generally be divided into two categories: ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30B01J29/03C02F1/28C02F1/62
CPCB01J20/16B01J29/0308B01J2229/186C02F1/281C02F2101/20
Inventor 喻鹏
Owner HUNAN AGRICULTURAL UNIV