Preparation method of titaniferous montmorillonite nanocomposite

A nano-composite material, montmorillonite technology, applied in the field of preparation of titanium-containing montmorillonite nano-composite materials, can solve the problems of hindering the diffusion of long-chain hydrocarbons, small pore size, and difficult to meet

Inactive Publication Date: 2015-02-04
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Zeolite molecular sieve is currently the most used catalyst, but its pore size is small (less than 0.8 nm), which hinders the diffusion ...

Method used

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  • Preparation method of titaniferous montmorillonite nanocomposite

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example 1

[0025] Example 1: The calcium-based montmorillonite raw ore of a certain place in the east of Hubei, Hubei, is naturally aired, and 30 g of raw ore powder is taken and immersed in 700 ml of water, and the montmorillonite particles are dispersed in water, so that water-insoluble impurities are precipitated, and then Add 1.3 g of sodium pyrophosphate and stir for 15 min. After standing for 24 h, take out the upper slurry and discard the middle residue; dry the upper high-purity slurry to obtain high-purity montmorillonite product. Weigh quantitative high-purity montmorillonite, add acetone and water according to V acetone / V water = 2:1, and make a suspension with a concentration of 0.70% montmorillonite, stir for 24 h, and set aside; under the condition of stirring, take an appropriate amount of Ti(n-C 4 h 9 O) 4 Slowly add it dropwise to an appropriate amount of hydrochloric acid solution, react for 30 min, then stand at room temperature for 3 h, where H / Ti=2.0 mol / mol, [HCl]...

example 2

[0026] Example 2: The calcium-based montmorillonite raw ore is naturally air-dried, and 30 g of raw ore powder is weighed and immersed in 600 ml of water, and the montmorillonite particles are dispersed in water to precipitate water-insoluble impurities, and then add sodium pyrophosphate 1.0 g and stirred for 15 minutes, and after standing for 24 hours, the upper slurry was taken out, and the middle residue was discarded; the upper high-purity slurry was dried to obtain a high-purity montmorillonite product. Weigh quantitative high-purity montmorillonite, add acetone and water according to V acetone / V water = 1.5:1, make a concentration of 0.50% montmorillonite suspension, stir for 24 h, stand-by; under the condition of stirring, take an appropriate amount of Ti(n-C 4 h 9 O) 4 Slowly add it dropwise to an appropriate amount of hydrochloric acid solution, react for 30 min, then stand at room temperature for 3 h, where H / Ti=1.5 mol / mol, [HCl]=4.5 mol / L; under the condition of ...

example 3

[0027] Example 3: The calcium-based montmorillonite raw ore is naturally air-dried, and 30 g of raw ore powder is weighed and immersed in 900 ml of water, and the montmorillonite particles are dispersed in water to precipitate water-insoluble impurities, and then add sodium pyrophosphate 1.5 g and stirred for 15 minutes, and after standing for 24 hours, the upper slurry was taken out, and the middle residue was discarded; the upper high-purity slurry was dried to obtain a high-purity montmorillonite product. Weigh a quantitative amount of high-purity montmorillonite, add acetone and water according to V acetone / V water = 2.5:1, and make a suspension with a concentration of 1.00% montmorillonite, stir for 24 h, and set aside; under stirring conditions, take an appropriate amount of Ti(n-C 4 h 9 O) 4 Slowly add it dropwise to an appropriate amount of hydrochloric acid solution, react for 30 min, then stand at room temperature for 3 h, where H / Ti=2.5 mol / mol, [HCl]=5.5 mol / L; u...

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Abstract

The invention discloses a preparation method of a titaniferous montmorillonite nanocomposite. The preparation method is characterized by comprising the following steps: (1) naturally airing the raw ores of calcium-based montmorillonite, and soaking the raw ore powder in water so that montmorillonite particles can be dispersed in water; (2) adding sodium pyrophosphate to the solution and stirring, standing, and then extracting the top slurry and abandoning medium residue; (3) drying the high-purity top slurry to obtain the high-purity montmorillonite product; (4) weighing the high-purity montmorillonite, adding acetone and water to prepare a suspension and stirring; slowly and dropwise adding an appropriate amount of Ti(n-C4H9O)4 to an appropriate amount of hydrochloric acid solution to have a reaction, and then standing at a room temperature; (5) slowly and dropwise adding the prepared titanium cross-linking agent solution to the montmorillonite suspension under the condition of stirring, reacting at a crosslinking temperature, stopping stirring and standing overnight; (6) centrifugally separating the overnight product, and washing by use of deionized water until no chloride ion is left through inspecting by use of an AgNO3 solution; (7) drying the separated solid in a vacuum drying oven; (8) crushing the dried solid to obtain a primary Ti-PILCs product, and then baking at a high temperature to obtain the final product.

Description

technical field [0001] The invention belongs to a new technology for preparing titanium-containing montmorillonite nanocomposite materials, that is, a new process of "preparing titanium-containing montmorillonite nanocomposite materials". Background technique [0002] In recent years, petroleum, which is the "industrial blood" of petrochemical raw materials and one of the main energy sources, has become increasingly heavy in the world, and catalytic cracking raw materials have become heavier, resulting in higher carbon residues and a greater tendency to generate coke. Zeolite molecular sieve is currently the most used catalyst, but its pore size is small (less than 0.8 nm), which hinders the diffusion of long-chain hydrocarbons into its structure, and it is difficult to meet the needs of deep catalytic processing of heavy oil and residual oil. It is imperative to find cheap and effective catalysts to solve heavy oil in cracked crude oil and increase the yield of light oil, s...

Claims

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Application Information

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IPC IPC(8): C01B33/24B01J21/16B01J20/12
Inventor 庹必阳姚艳丽杨峻杰韩朗
Owner GUIZHOU UNIV
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