A new energy composite material and its preparation method

A technology for hydrogen storage materials and mixed solutions, applied in chemical instruments and methods, inorganic chemistry, hydrogen, etc., can solve problems that restrict the development of hydrogen energy applications, small hydrogen storage capacity, and low energy

Active Publication Date: 2021-12-03
浙江台州市恒基模塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing MgH 4 、LiBH 4 , NaAlH 4 Hydrogen storage materials have problems such as low energy, difficult dehydrogenation, and relatively small hydrogen storage capacity at low temperature and low pressure, which seriously restrict the application and development of hydrogen energy.

Method used

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  • A new energy composite material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step 1: adding lignocellulose into NaOH aqueous solution, stirring for 3 hours at a water bath temperature of 45° C. to obtain a suspension with a lignocellulose concentration of 5 wt%. The diatom frustule is ball-milled with a ball mill and passed through a 50-mesh sieve to obtain a powder, and then the diatom frustule powder is placed in deionized water for 20 minutes of ultrasonication. After the ultrasonic wave is completed, it is filtered and added to deionized water for 30 minutes to obtain a diatom frustule concentration of 8wt%. suspension. Then, with a mass ratio of lignocellulose and diatom frustule of 1:4, an appropriate amount of lignocellulose suspension and diatom frustule suspension were mixed and stirred at 80° C. for 8 hours, filtered after the stirring was completed, and the filter residue was washed with deionized water until Neutral, and then put the sample in a vacuum oven and dry at 73°C for 30h to obtain diatom frustules-lignocellulose material. ...

Embodiment 2

[0024] Step 1: adding lignocellulose into NaOH aqueous solution, and stirring for 3 hours at a water bath temperature of 50° C. to obtain a suspension with a lignocellulose concentration of 5 wt%. The diatom frustule is ball-milled with a ball mill and passed through a 50-mesh sieve to obtain a powder, then the diatom frustule powder is placed in deionized water for 15 minutes of ultrasonication, after the ultrasonic wave is completed, it is filtered and added to deionized water for 37 minutes to obtain a diatom frustule concentration of 8 wt%. suspension. Then, with a mass ratio of lignocellulose and diatom frustule of 1:3, an appropriate amount of lignocellulose suspension and diatom frustule suspension were mixed and stirred at 85° C. for 7 hours, filtered after the stirring was completed, and the filter residue was washed with deionized water until neutral, and then place the sample in a vacuum drying oven at 76° C. for 32 hours to obtain diatom frustules-lignocellulose ma...

Embodiment 3

[0028] Step 1: adding lignocellulose into NaOH aqueous solution, and stirring for 2 hours at a water bath temperature of 48° C. to obtain a suspension with a lignocellulose concentration of 5 wt%. The diatom frustule is ball-milled with a ball mill and passed through a 50-mesh sieve to obtain a powder, then the diatom frustule powder is placed in deionized water for 17 minutes, and after the ultrasound is completed, it is filtered and added to deionized water for 34 minutes to obtain a diatom frustule concentration of 8 wt%. suspension. Then, with a mass ratio of lignocellulose and diatom frustule of 1:3.5, an appropriate amount of lignocellulose suspension and diatom frustule suspension were mixed and stirred for 6 hours at 82°C, and filtered after the stirring was completed, and the filter residue was washed with deionized water until neutral, and then place the sample in a vacuum oven and dry at 80° C. for 34 hours to obtain diatom frustules-lignocellulose material.

[002...

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Abstract

The invention belongs to the field of hydrogen storage materials, in particular to a ZnSe-doped Cu-MOF / diatom frustules-lignocellulose composite hydrogen storage material. The steps of the preparation method include: mixing diatom frustules and lignocellulose suspensions to obtain diatom frustules-lignocellulose, and then using Cu(NO 3 ) 2 ·3H 2 O and trimesic acid were used as raw materials to load Cu-MOF on diatom frustule-lignocellulose, and zinc acetate was used as zinc source, Na 2 SeO 3 Synthesize ZnSe on selenium source materials to obtain ZnSe-doped Cu-MOF / diatom frustules-lignocellulose composite hydrogen storage materials. The hydrogen storage material of the present invention has good hydrogen absorption capacity and short hydrogen absorption time at room temperature and low pressure, and the hydrogen desorption time and hydrogen desorption capacity are also very good.

Description

technical field [0001] The invention belongs to the field of hydrogen storage materials, in particular to a ZnSe-doped Cu-MOF / diatom frustules-lignocellulose composite hydrogen storage material. Background technique [0002] The traditional fossil energy reserves on the earth are limited, and most of them are non-renewable. Moreover, when traditional fossil fuels are burned, harmful gases such as carbon monoxide and sulfur dioxide are easily produced, causing a series of environmental pollution problems such as the greenhouse effect and acid rain. Therefore, it is imminent to find a sustainable and pollution-free new energy development and utilization. [0003] Among a series of sustainable new energy sources such as nuclear energy, solar energy, biomass energy, wind energy and hydrogen energy, hydrogen energy has a series of outstanding advantages. Hydrogen is mainly stored in water in the form of compounds on the earth, so hydrogen energy has the advantages of abundant re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/00
CPCC01B3/0078Y02E60/32
Inventor 方才愿
Owner 浙江台州市恒基模塑有限公司
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