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A kind of method using diisobutylaluminum hydride and libh4 as catalyst to prepare α-alh3

A technology of diisobutylaluminum hydride and catalyst, 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: 2018-03-30
HARBIN INST OF TECH
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  • Summary
  • 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 diisobutyl aluminum hydride and LiBH is provided 4 Preparation of α-AlH as Catalyst 3 Methods

Method used

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  • A kind of method using diisobutylaluminum hydride and libh4 as catalyst to prepare α-alh3
  • A kind of method using diisobutylaluminum hydride and libh4 as catalyst to prepare α-alh3

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specific Embodiment approach 1

[0019] Specific embodiment one: one of this embodiment uses diisobutylaluminum hydride and LiBH 4 Used as a catalyst to prepare α-AlH 3 The method is carried out under anhydrous and oxygen-free conditions, and the specific operation steps are as follows:

[0020] 1. Take the activated aluminum powder in the glove box and add it to the autoclave, then add diisobutyl aluminum hydride and LiBH 4 ;

[0021] 2. Pour 10~15MPa H into the autoclave of step one 2 , Then react at 100~150℃ for 3~8h;

[0022] 3. After the sample obtained in step 2 is subjected to anhydrous toluene, it is vacuum dried for 2 hours to obtain the α-AlH 3 ;

[0023] Among them, aluminum powder, LiBH 4 The mass-volume ratio with diisobutylaluminum hydride is 1 g: (1-3) g: (5-10) mL.

[0024] The activated aluminum powder described in this embodiment is an activated aluminum powder obtained by ball milling in a glove box.

specific Embodiment approach 3

[0025] Specific embodiment three: This embodiment is different from the specific embodiment one in that it is reacted at 120-150°C for 3-7h. Others are the same as the first embodiment.

specific Embodiment approach 4

[0026] Specific embodiment four: This embodiment is different from the specific embodiment one in that it is reacted at 130-150°C for 3-6 hours. Others are the same as the first embodiment.

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Abstract

The invention relates to a method for preparing alpha-AlH3 by use of diisobutylaluminum hydride and LiBH4 as the catalyst, relates to a preparation method for alpha-AlH3, and aims to solve the problem that conditions required by direct synthesis of alpha-AlH3 through aluminum and hydrogen are strict. The method comprises the following steps: adding aluminum powder, diisobutylaluminum hydride and LiBH4 in an autoclave; introducing hydrogen, reacting at the condition with the temperature of 100-150 DEG C, and drying to obtain the product. In the method, the reaction pressure is 10-15 MPa which is much lower than 10 GPa, the reaction temperature is 100-150 DEG C which is much lower than 650 DEG C, through XRD tests, the synthesized product contains alpha-AlH3, and the method is applied to preparation of alpha-AlH3.

Description

Technical field [0001] The present invention relates to a kind of α-AlH 3 The preparation method, specifically involving a method of diisobutyl aluminum hydride and LiBH 4 Used as a catalyst to prepare α-AlH 3 Methods. Background technique [0002] Energy is an important driving force for a country’s industrial growth and economic development. Although the energy currently used is still mainly traditional energy sources such as oil, coal, and natural gas, this basic energy structure will not change in a short time. But our current traditional energy situation is already very severe, so the development and utilization of clean and low-carbon new energy trends are gradually becoming apparent. [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 pollution at all, because its ...

Claims

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Application Information

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Patent Type & Authority Patents(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叶腾凌朱朝阳郑剑庞爱民唐根
Owner HARBIN INST OF TECH
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