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Preparation method for alpha-AlH3 by catalyzing active aluminum with diethyl aluminum hydride and LiBH4 as catalysts

A diethylaluminum hydride, catalytically active technology, applied in chemical instruments and methods, metal hydrides, inorganic chemistry, etc., can solve problems such as harsh conditions, and achieve the effect of simple ideas and simple process methods

Active Publication Date: 2016-05-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the invention is to solve the direct reaction of aluminum and hydrogen to synthesize α-AlH 3 The required conditions are too harsh, and a kind of diethyl aluminum hydride and LiBH is provided 4 Preparation of α-AlH by Catalytically Active Aluminum as Catalyst 3 Methods

Method used

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  • Preparation method for alpha-AlH3 by catalyzing active aluminum with diethyl aluminum hydride and LiBH4 as catalysts
  • Preparation method for alpha-AlH3 by catalyzing active aluminum with diethyl aluminum hydride and LiBH4 as catalysts
  • Preparation method for alpha-AlH3 by catalyzing active aluminum with diethyl aluminum hydride and LiBH4 as catalysts

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specific Embodiment approach 1

[0020] Specific implementation mode one: a kind of diethyl aluminum hydride and LiBH of this embodiment 4 Preparation of α-AlH by Catalytic Active Aluminum as Catalyst 3 The method, described method is carried out under anhydrous anaerobic condition, and concrete operation steps are as follows:

[0021] 1. Take the activated aluminum powder in the glove box and add it to the autoclave, then add diethyl aluminum hydride and LiBH 4 ;

[0022] 2. Pour 10-15MPa of H into the autoclave of step 1. 2 , and then react at 100-150°C for 5-14 hours;

[0023] 3. After washing the sample obtained in step 2 with anhydrous toluene and anhydrous hexane once, dry it in vacuum for 2 hours to obtain the α-AlH 3 ;

[0024] Among them, aluminum powder, LiBH 4 The mass-volume ratio of diethylaluminum hydride and diethylaluminum hydride is 1g: (1-3) g: (5-15) mL.

[0025] The activated aluminum powder described in this embodiment is obtained by ball milling in a glove box.

specific Embodiment approach 2

[0026] Embodiment 2: This embodiment is different from Embodiment 1 in that: the reaction is carried out at 110-150° C. for 5-14 hours. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment is different from Embodiment 1 in that: the reaction is carried out at 120-150° C. for 5-12 hours. Others are the same as in the first embodiment.

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Abstract

The invention provides a preparation method for alpha-AlH3 by catalyzing active aluminum with diethyl aluminum hydride and LiBH4 as catalysts, and relates to a method for preparing alpha-AlH3. The preparation method provided by the invention is to solve the problem of over-harsh conditions demanded for synthesis of alpha-AlH3 through a direct reaction of aluminum and hydrogen gas. The method provided by the invention comprises the following steps: adding aluminum powder, diethyl aluminum hydride and LiBH4 into a high-pressure kettle; and injecting hydrogen gas, carrying out a reaction under the condition of a temperature of 100 to 150 DEG C, and carrying out drying so as to obtain alpha-AlH3, wherein reaction pressure is 10 to 15 MPa and is much less than 10 GPa; reaction temperature is 100 to 150 DEG C and is much less than 650 DEG C; and synthesized products comprise alpha-AlH3 through an x-ray diffraction (XRD) test. The preparation method provided by the invention is applied in preparation of alpha-AlH3.

Description

technical field [0001] The present invention relates to a kind of α-AlH 3 The preparation method, specifically relates to a kind of diethyl aluminum hydride and LiBH 4 Preparation of α-AlH by Catalytically Active Aluminum as Catalyst 3 Methods. Background technique [0002] Energy is an important driving force for a country's industrial growth and economic development. Although the energy used now is still dominated by traditional energy sources such as oil, coal, and natural gas, and this basic energy structure will not change in a short time. However, our current traditional energy situation is already very severe, so the trend of developing and utilizing clean and low-carbon new energy is gradually obvious. [0003] There are many types of new clean energy, including wind energy, solar energy, tidal energy, hydrogen energy and so on. Among these new clean energy sources, hydrogen energy has the following advantages: (1) The use of hydrogen energy does not produce any ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B6/06
CPCC01B6/06C01P2002/72
Inventor 杨玉林姜艾锋范瑞清李梦茹王华威林凯峰朱朝阳郑剑庞爱民唐根
Owner HARBIN INST OF TECH
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