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A preparation method of sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity

A technology with high specific surface area and catalytic activity, applied in the field of preparation of sulfided titanium dioxide, can solve the problems of complicated operation, long duration, small specific surface area, etc., and achieve the effect of simplifying the preparation method

Active Publication Date: 2017-05-24
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention will solve the problem that the existing method for preparing sulfurized titanium dioxide has complicated operation, long time, and the problem of sulfided titanium dioxide (TiO 2 -SO 4 2- The technical problem that the specific surface area of ​​) is little, and a kind of preparation method of the sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity is provided

Method used

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  • A preparation method of sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity
  • A preparation method of sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity
  • A preparation method of sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity

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specific Embodiment approach 1

[0017] Embodiment 1: In this embodiment, a method for preparing titanium dioxide sulfide with high specific surface area and strong acid catalytic activity is specifically carried out according to the following steps:

[0018] 1. Mix tetrabutyl titanate and distilled water, stir for 30 minutes, then perform suction filtration and wash, then control the temperature at 80°C to 100°C and dry for 12 hours to obtain solid titanium hydroxide;

[0019] 2. Put the titanium hydroxide solid and ammonium sulfate solid obtained in step 1 into a mortar and grind for 30 minutes to obtain a white powdery solid;

[0020] 3. Put the white powdery solid obtained in step 2 into a muffle furnace, raise the temperature to 450° C. to 650° C., and calcinate for 5 hours to obtain sulfurized titanium dioxide with high specific surface area and strong acid catalytic activity.

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment differs from Embodiment 1 in that the mass volume ratio of tetrabutyl titanate to distilled water in Step 1 is 8.5 g: 10 mL. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 is that in step 1, distilled water is used for cleaning. Others are the same as in the first embodiment.

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Abstract

The invention discloses a preparation method of TiO2-SO4<2-> with high specific surface area and strong acid catalytic activity. The preparation method solves the technical problem that the existing TiO2-SO4<2-> preparation method has complex processes and long work time and produces TiO2-SO4<2-> with small specific surface area. The preparation method comprises 1, titanium hydroxide solid preparation, 2, grinding and 3, calcining. The preparation method simplifies preparation processes and produces the product with large specific surface area for providing more catalytic active sites. The TiO2-SO4<2-> with high specific surface area and strong acid catalytic activity can be used for acid catalysis isomerization, esterification reaction, etherification reaction, alkylation reaction, aromatic acylation organic reaction, and photocatalytic oxidation reaction.

Description

technical field [0001] The present invention relates to the preparation method of sulfurized titanium dioxide. Background technique [0002] Acid-catalyzed organic synthesis reactions are used in various fields such as drug preparation and food preservative preparation. However, most of the liquid acid catalysts can promote the corrosion of the reaction unit, are not easy to separate from the reaction products, pollute the environment, and have certain dangers. Therefore, replacing liquid acid catalysts with solid acid catalysts in most organic synthesis reactions can well solve the problem of liquid acid catalysts, which has become an important topic of research in many laboratories around the world. Recently, a large number of literatures have reported the preparation and application of solid acid catalysts such as zeolite molecular sieves, ion exchange resins, and metal oxides. [0003] Metal oxides are widely used in industrial oxidation, reduction, and acid-catalyzed ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/053
Inventor 孙印勇鲁荣
Owner HARBIN INST OF TECH
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