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TiH2 doped Mg/ polymethyl methacrylate (PMM) composite material and preparation method

A composite material and charge technology, applied in the direction of chemical instruments and methods, other chemical processes, etc., can solve the problems of restricting popularization and application, poor hydrogen absorption and desorption performance at low temperature, etc., and achieve low price, easy operation, and simple preparation process Effect

Active Publication Date: 2015-07-01
GUILIN UNIV OF ELECTRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But pure MgH 2 The low-temperature hydrogen absorption and desorption performance is poor, which seriously restricts its popularization and application.

Method used

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  • TiH2 doped Mg/ polymethyl methacrylate (PMM) composite material and preparation method
  • TiH2 doped Mg/ polymethyl methacrylate (PMM) composite material and preparation method
  • TiH2 doped Mg/ polymethyl methacrylate (PMM) composite material and preparation method

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Experimental program
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Embodiment 1

[0021] Embodiment 1: with TiH 2 as a catalyst for MgH 2 / PMMA for doping.

[0022] Weigh 0.2g TiH respectively in the glove box 2 and 1.0 g MgH 2 , put it into a ball mill jar with a capacity of 100mL, put 20 steel balls with a diameter of 10 mm into the ball mill jar, and ensure that the ball-to-material ratio is 100:1. Put the ball mill jar in the ball mill, set the rotation speed to 400 r / min, and the time is 4 hours, and the final sample obtained is MgH 2 -TiH 2 Material.

[0023] Weigh 1.0 g of the above sample in the glove box, put it in a 50 mL Erlenmeyer flask, add 20 mL of anhydrous THF, and then add 0.3 g of PMMA material. Seal the Erlenmeyer flask, and after ultrasonication for 0.5 hours, vacuum-dry at 50°C for 12 hours, and finally vacuum-dry at room temperature for 5 hours to obtain TiH 2 Doped MgH 2 / PMMA sample

[0024] MgH doped with catalyst 2 XRD characterization of / PMMA composites

[0025] For the prepared MgH doped with catalyst 2 / PMMA for ...

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Abstract

The invention relates to a preparation method for doping an MgH2 / polymethyl methacrylate (PMMA) composite hydrogen storage material with TiH2 as a catalyst, particularly relates to a method for improving the dehydrogenation performance of the MgH2 / PMMA composite hydrogen storage material by doping the material with TiH2 as a catalyst, and belongs to the field of material invention. The preparation method comprises the following steps: firstly, preparing a TiH2-MgH2 material by a solid-phase ball milling method; then performing ultrasound treatment on the TiH2-MgH2 material in a tetrahydrofuran (THF) solution in which PMMA is dissolved by a liquid-phase ultrasound method; and finally, carrying out temperature controlled vacuum drying so as to prepare the TiH2@MgH2 / PMMA composite hydrogen storage material. The composite hydrogen storage material prepped by solid phase ball milling and liquid phase ultrasound treatment has good dehydrogenation performance. When the amount of the doped catalyst TiH2 is 10wt%-30wt%, the initial dehydrogenation temperature of the material is 120 DEG C; the constant-temperature dehydrogenation amount at 200 DEG C within 200 minutes reaches 3.7wt% (except for the mass ratio of a composite agent PPMA), and reaches 72.5% of the theoretical hydrogen content.

Description

technical field [0001] The present invention relates to a kind of catalyst, specifically a kind of TiH 2 Doped Mg / PMMA composite material and preparation method. Background technique [0002] With the continuous consumption of mineral energy and a series of environmental problems caused by it, seeking clean, environmentally friendly and renewable new energy has become a scientific issue of common concern to scientists. Hydrogen energy, as a form of renewable energy storage with abundant reserves, clean and environment-friendly, has attracted widespread attention from all over the world. The commercial application of hydrogen energy needs to solve the three major technical problems of its production, storage and transportation, among which the efficient and safe on-board storage of hydrogen is the most challenging research topic with commercial application value. Among the studied hydrogen storage methods, solid-state hydrogen storage, which has obvious advantages in mass h...

Claims

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Application Information

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IPC IPC(8): B01J20/26B01J20/30
Inventor 孙立贤李志宝徐芬张莹洁杨天宝
Owner GUILIN UNIV OF ELECTRONIC TECH
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