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A kind of rare earth nano hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquid and its preparation method

A hydrogen storage alloy and organic technology, applied in the field of rare earth nanometer hydrogen storage alloy and its preparation, can solve the problems of complex preparation process and the like

Active Publication Date: 2021-09-10
苏州清德氢能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the reduction temperature used in these methods is usually greater than 900 °C, the preparation process of the precursor is relatively complicated, and it is used to catalyze the hydrogenation reaction of LaNi 5 The alloy phase is easy to decompose

Method used

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  • A kind of rare earth nano hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquid and its preparation method
  • A kind of rare earth nano hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquid and its preparation method
  • A kind of rare earth nano hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquid and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Add 0.371 g LaCl to the beaker 3 ∙7H 2 O and 1.307 g NiCl 2 ∙6H 2 O, stirring and dissolving in 10 mL deionized water, adding 10 mL 4 mol / L concentrated NaOH solution dropwise under vigorous stirring to obtain a mixed hydroxide precursor; centrifuging, and washing the obtained isolate with deionized water for three times and then dried overnight in an oven at 80 °C; the dried mixed hydroxide precursor was mixed with 4 g KCl and 1.5 g CaH in a glove box 2 Grind and mix to obtain mixed powder, then transfer to a crucible, and reduce in a tube furnace with protective gas Ar atmosphere at 700 °C for 2 h to obtain a hardened solid mixture, which is washed with 0.1mol / L dilute acetic acid under the protection of protective gas Ar Three times, CaO produced by the dissolution reaction, unreacted CaH 2 and KCl solid, and centrifuged, the separated precipitate was washed with water and ethanol respectively, and finally dried in a vacuum oven for later use, that is, a type of ...

Embodiment 2

[0041] Add 0.371 g LaCl to the beaker 3 ∙7H 2 O and 1.188 g NiCl 2 ∙6H 2 O, stirring and dissolving in 10 mL deionized water, adding 10 mL 4 mol / L concentrated NaOH solution dropwise under vigorous stirring to obtain a mixed hydroxide precursor; centrifuging, and washing the obtained isolate with deionized water for three times and then dried overnight in an oven at 80 °C; the dried mixed hydroxide precursor was mixed with 4 g KCl and 1.5 g CaH in a glove box 2 Grind and mix to obtain mixed powder, then transfer to a crucible, and reduce in a tube furnace with protective gas Ar atmosphere at 700 °C for 2 h to obtain a hardened solid mixture, which is washed with 0.1mol / L dilute acetic acid under the protection of protective gas Ar Three times, CaO produced by the dissolution reaction, unreacted CaH 2 and KCl solid, and centrifuged, the separated precipitate was washed with water and ethanol respectively, and finally dried in a vacuum oven for later use, that is, a type of ...

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Abstract

The invention belongs to the technical field of hydrogen storage, and in particular relates to a rare-earth nano-hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquids and a preparation method thereof. The rare earth nano hydrogen storage alloy is LaNi 5 alloy, the LaNi 5 The alloy is prepared by the following steps: 1) LaCl 3 ∙7H 2 O and NiCl 2 ∙6H 2 O After obtaining a mixed solution in proportion, add a concentrated alkali solution to react to obtain a mixed hydroxide precursor; 2) mix the mixed hydroxide precursor with KCl and CaH 2 After mixing, carry out high-temperature reduction reaction to obtain LaNi 5 alloy. The rare earth nano-hydrogen storage alloy of the present invention solves two problems at the same time: on the one hand, it solves the problem that the high-efficiency hydrogen absorption and desorption catalyst using organic hydrogen storage liquid in the prior art has a high cost and needs to use different noble metals; on the other hand, Solve the problem of preparing nano LaNi in the prior art 5 The process is relatively complicated, and the obtained catalyst has the problem of poor stability.

Description

technical field [0001] The invention belongs to the technical field of hydrogen storage, and in particular relates to a rare-earth nano-hydrogen storage alloy for catalyzing the hydrogen absorption and desorption of organic hydrogen storage liquids and a preparation method thereof. Background technique [0002] Hydrogen energy has a series of advantages such as clean and non-polluting, high calorific value, and is considered by many people to be the best option to change the current energy structure dominated by fossil energy and realize the sustainable development of human society. But there are three main bottlenecks in the utilization of hydrogen energy: the large-scale production of hydrogen, the storage of hydrogen and the efficiency of fuel cells. Especially in terms of hydrogen storage, the currently commercially successful technologies are high-pressure hydrogen storage and low-temperature liquefied hydrogen. These two methods have high requirements for the safety of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/83
CPCC22C19/03B22F9/20B82Y40/00C22C2202/04B22F1/054
Inventor 余洪蒽吴勇谢镭郑捷李星国
Owner 苏州清德氢能源科技有限公司
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