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Preparation method and application of a titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity

A catalytic oxidation and molecular sieve technology, applied in molecular sieve catalysts, chemical instruments and methods, refining with oxygenated compounds, etc., can solve the problems of poor oxidative desulfurization effect of mesoporous Y-type molecular sieve, and achieve good reaction effect and mild reaction conditions. , the effect of simple preparation process

Active Publication Date: 2016-08-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problem that the mesoporous Y-type molecular sieve prepared by the existing method has poor oxidative desulfurization effect, and provides a preparation method and application of a titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity

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  • Preparation method and application of a titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity
  • Preparation method and application of a titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity
  • Preparation method and application of a titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity

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specific Embodiment approach 1

[0017] Specific embodiment one: a kind of preparation method of the titanium-containing mesoporous Y-type molecular sieve with catalytic oxidation activity of the present embodiment, it is to carry out according to the following steps:

[0018] 1. Place the mesoporous Y-type molecular sieve in a muffle furnace and calcinate at 450°C-600°C for 3h-5h;

[0019] 2. Disperse the organic titanium source in the solvent, and after the dispersion is uniform, obtain the organic titanium source dispersion; place the mesoporous Y-type molecular sieve calcined in step 1 in the organic titanium source dispersion, vibrate for 5 minutes, and then perform ultrasonic treatment , the treatment time is 10min to 30min. After the ultrasonic wave is over, put the liquid in an oven and dry it at 60°C to 100°C for 12h to 24h to obtain a dry white solid; among them, the mesoporous Y-type molecular sieve and the solid of the solvent The liquid ratio is 1g: (3.5-5.5)mL; the mass fraction of titanium atom...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that the mesoporous Y-type molecular sieve is placed in a muffle furnace and calcined at 500° C. to 600° C. for 3.5 hours to 5 hours as described in Step 1. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the mesoporous Y-type molecular sieve is placed in a muffle furnace and calcined at 550° C. to 600° C. for 4 h to 5 h as described in Step 1. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a preparing method and application of a titaniferous mesoporous Y-type molecular sieve with catalytic oxidation activity, relating to a preparing method and application of a titaniferous mesoporous molecular sieve, aiming at solving the problem that the mesoporous Y-type molecular sieve prepared by the existing method is poor in oxidative desulfurization effect. The preparing method comprises the following steps: 1, calcining the mesoporous Y-type molecular sieve; 2, mixing the molecular sieve with an organic titanium source, then ultrasonically dispersing, and drying; and 3, calcining at high temperature to obtain the product. The titanium supported mesoporous Y-type molecular sieve with catalytic oxidation activity is applied to oxidative desulfurization reaction of a simulated oil system taking dibenzothiophene as sulfur-containing material; as the catalyst for oxidative desulfurization reaction, the Ti-Y molecular sieve is low in cost, simple in preparing process and mild in reaction conditions, and can be used for large-scale production; the oxidative desulfurization effect is good, and the desulfurization rate can reach up to about 75% in one hour and can reach up to 98% in two hours; the titaniferous mesoporous Y-type molecular sieve with catalytic oxidation activity is applied to the field of oxidative desulfurization.

Description

technical field [0001] The invention relates to a method for preparing a titanium-containing mesoporous Y-type molecular sieve by using a mesoporous Y-type molecular sieve as a carrier and loading different titanium active species thereon. The titanium-containing mesoporous Y-type molecular sieve is used in catalytic oxidation desulfurization reactions . Background technique [0002] Y-type molecular sieves are widely used in industrial processes such as catalytic cracking, alkylation, and gas adsorption and separation due to their high specific surface area and strong acidity. They are an important component of zeolite molecular sieves. However, the general commercial Y-type molecular sieves are microporous molecular sieves, which greatly limits the application of Y-type molecular sieves in macromolecular reactions. In order to increase the pore volume and pore size of the Y-type molecular sieve, different modification treatments can be carried out to obtain the mesoporous...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08C10G27/12
Inventor 孙印勇张幸冷坤岳
Owner HARBIN INST OF TECH