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Preparation method of mesopore titanium oxide whisker shaping material

A technology of mesoporous titanium oxide and molding materials, applied in chemical instruments and methods, catalyst activation/preparation, chemical/physical processes, etc., can solve the problems of decreased catalyst activity, easy loss of alkali metal ions, etc. The effect of high crushing strength and high porosity

Active Publication Date: 2008-10-01
NANJING TECH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

After being loaded on the shaped titanium oxide by ordinary methods, the alkali metal ions are easily lost and the catalyst activity is reduced

Method used

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  • Preparation method of mesopore titanium oxide whisker shaping material

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Embodiment 1

[0022] Using mesoporous titanium oxide whiskers and titanium oxide sol as raw materials, wherein mesoporous titanium oxide whiskers are 80% (wt), titanium oxide sol is 20% (wt), after adding appropriate amount of water and mixing fully, extruded by extruder The strips are shaped, dried and baked in a muffle furnace at 400°C. The obtained molding material is strip-shaped, with an equivalent diameter of 2mm, a crystallinity of 45%, a specific surface area of ​​132m2 / g, a crushing strength of 0.54MPa, a porosity of 77%, and a pore volume of 0.67cm 3 / g, the peaks of pore size distribution can be located at 5.5nm, 55nm and 7.6μm respectively.

[0023] Other examples are shown in Table 1.

[0024] Table 1. The formula, preparation condition and performance of embodiment 2~7

[0025]

[0026] Note: p means particle, w means whisker; 2TiK means potassium dititanate, 6TiK means potassium hexatitanate, 4TiK means potassium tetratitanate

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Abstract

A process for preparing the shaped meso-porous titanium oxide whisker material includes such steps as providing the meso-porous titanium oxide whisker and one or more of potassium titanate or its derivative and other kinds of titanium oxide, shaping and calcining. It has high crystallized degree (more than 20%), regularly ordered nano structure, 30-180 sq.m / g for specific surface area, 0.4-3 MPa for breaking strength, 30-80% for porosity and 0.1-0.7 cu.m / g for pore volume.

Description

technical field [0001] The invention belongs to the technical field of preparation of catalyst materials, specifically mesoporous titanium oxide whiskers without other molding additives, high crystallinity, regular and ordered nanostructure, large specific surface area, high crushing strength, and porous distribution type Preparation method of molding material. Background technique [0002] Generally, catalysts are composed of supports and active metal components, and the preparation of catalytic materials with dual functions of supports and catalysts has attractive industrial prospects because it can greatly reduce production costs. γ-Al 2 o 3 It has the characteristics of high specific surface area and high strength, but as an inert carrier, it cannot improve the reactivity; although MCM-41 mesoporous molecular sieve has high specific surface area, regular and orderly large pores, its channels are easy to block, have no strong acid centers and are chemically stable Poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J21/06B01J37/00
Inventor 陆小华周亚新杨祝红冯新刘畅
Owner NANJING TECH UNIV