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Tubular TiO2 synthesis method and application of tubular TiO2

A synthetic method, a tubular technology, applied in chemical instruments and methods, nanotechnology for materials and surface science, titanium oxide/hydroxide, etc., can solve the problems of poor reversibility, high temperature and pressure of hydrogen absorption and desorption, and achieve The effect of improved hydrogen release performance, simple production process and easy control of reaction conditions

Inactive Publication Date: 2014-12-24
NANKAI UNIV
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  • Claims
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Problems solved by technology

[0004] LiBH 4 As a hydrogen storage material, it has a high hydrogen content, up to 18.4% (mass fraction), but it has high thermodynamic stability, high hydrogen absorption and desorption temperature and pressure, and poor reversibility

Method used

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  • Tubular TiO2 synthesis method and application of tubular TiO2
  • Tubular TiO2 synthesis method and application of tubular TiO2
  • Tubular TiO2 synthesis method and application of tubular TiO2

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Embodiment

[0026] A tubular TiO 2 The synthetic method comprises the following steps:

[0027] 1) Add 0.3120 g TiOSO 4 Dissolve in a mixed solution of 30 ml of ethanol and 15 ml of glycerol, then add 15 ml of ether, stir well to obtain a mixed solution;

[0028] 2) Transfer the above mixed solution to a high-pressure reactor, and then put it into a homogeneous reactor for heating and constant temperature reaction. The reaction temperature is 110 °C, and the reactor speed is 10 °C / min. After 48 h of reaction, it is cooled naturally. A white precipitate is formed;

[0029] 3) After the resulting white precipitate was centrifuged, washed three times with absolute ethanol and deionized water, and finally washed once with absolute ethanol, then vacuum-dried at 60 °C for 12 h, and finally dried in an air atmosphere , calcination at 550 °C for 6 h, the tubular TiO 2 finished product. The obtained sample is pure phase anatase, which is consistent with the standard card JCPDS 1-562, and its ...

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Abstract

The invention provides a tubular TiO2 synthesis method. The tubular TiO2 synthesis method comprises the following steps of: (2) dissolving TiOSO4 in mixed alcohol, and then adding diethyl ether to the mixed alcohol; (2) transferring the solution to a high-pressure reactor, and carrying out heating constant-temperature reaction in a homogeneous reactor to generate white precipitates; (3) sequentially centrifuging, washing, drying in vacuum and calcining the generated precipitates at high temperature, thus obtaining a finished product; and (4) mixing the prepared powder and LiBH4 to prepare the TiO-LiBH4. The synthesized tubular TiO2 can be used as a catalyst for hydrogen generation of LiBH4 and a range-limited carrier. The tubular TiO2 synthesis method has the advantages that the production process is simple, reaction conditions are easy to control, a template agent and a surface active agent are not needed, and the prepared tubular TiO2 can be used for greatly improving the hydrogen generation performance of LiBH4.

Description

technical field [0001] The present invention relates to LiBH 4 In the field of hydrogen storage, especially a kind of tubular TiO 2 Synthetic methods and their applications. Background technique [0002] As a clean and ideal secondary energy source, hydrogen energy has attracted widespread attention from all over the world. However, hydrogen storage is still a key technology that restricts the commercial application of hydrogen energy. In recent years, with the continuous expansion of the field of hydrogen storage materials, lithium borohydride (LiBH 4 ) as a typical representative of high-storage coordination metal hydrides has gradually become an emerging research hotspot of hydrogen storage materials. [0003] Nano confinement is to fill materials into nanopores, and use the interaction between materials and nanopores to promote the reaction and provide a unique microenvironment for chemical reactions. In recent years, nanoconfinement has gradually developed into a ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053B82Y30/00B82Y40/00B01J21/06
Inventor 焦丽芳袁华堂王一菁刘会俏赵艳萍郭利静刘永畅曹康哲
Owner NANKAI UNIV
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