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A kind of nano catalyst and its preparation method and application

A nano-catalyst and nano-particle technology, which is used in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of inability to achieve large-scale applications, low catalytic activity, etc. The effect of high catalytic activity and conversion rate, good catalytic activity

Active Publication Date: 2022-02-08
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a nano-catalyst to solve the problem that the existing noble metal catalysts used in the hydrolysis of hydrazine borane for hydrogen production have low catalytic activity and cannot be applied on a large scale.

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  • A kind of nano catalyst and its preparation method and application
  • A kind of nano catalyst and its preparation method and application
  • A kind of nano catalyst and its preparation method and application

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preparation example Construction

[0026] The embodiment of the present invention also provides a preparation method of the above nanocatalyst, the preparation method of the nanocatalyst includes the following steps: using titanium dioxide aqueous solution, CoCl 2 Aqueous solution, RuCl 3 Aqueous solution, IrCl 3 Aqueous solution is used as raw material, after adding sodium hydroxide (NaOH) aqueous solution and sodium borohydride (NaBH 4 ) aqueous solution to carry out the reduction reaction to obtain the nano-catalyst.

[0027] As another preferred embodiment of the present invention, the preparation method of the nanocatalyst comprises the following steps:

[0028] Titanium dioxide, CoCl 2 、RuCl 3 , IrCl 3 Add water separately to prepare titanium dioxide aqueous solution, CoCl 2 Aqueous solution, RuCl3 Aqueous solution, IrCl 3 aqueous solution;

[0029] CoCl 2 Aqueous solution, RuCl 3 Aqueous solution, IrCl 3 The aqueous solution is added to the titanium dioxide aqueous solution and mixed uniformly...

Embodiment 1

[0053] A kind of nano catalyst, specifically a kind of titanium dioxide supported CoRuIr nano catalyst, its preparation method is as follows figure 1 As shown, it specifically includes the following steps:

[0054] Step 1. Prepare 15 mL of titanium dioxide aqueous solution with a concentration of 2 mg / mL, specifically adding an appropriate amount of titanium dioxide into water and ultrasonically treating it for 60 minutes to obtain a uniformly dispersed titanium dioxide aqueous solution;

[0055] Step 2, the total amount of 0.1mmol of CoCl 2 、RuCl 3 , IrCl 3 (CoCl 2 : RuCl 3 : IrCl 3 The molar ratio is 6:2:2), and it is added into the titanium dioxide aqueous solution in step 1 in the form of an aqueous solution, and after continuing to stir for 10 minutes, a mixed solution is obtained;

[0056] Step 3: Dissolve 412 mg of NaOH and 30 mg of sodium borohydride in 1 mL of distilled water, then add it to the mixed solution in step 2, and stir at 25° C. for 15 min to perform ...

Embodiment 2

[0058] A kind of nano catalyst, specifically a kind of titanium dioxide supported CoRuIr nano catalyst, its preparation method comprises the following steps:

[0059] Step 1, preparing 15 mL of titanium dioxide aqueous solution with a concentration of 2 mg / mL, specifically, adding an appropriate amount of titanium dioxide into water and ultrasonically treating it for 30 minutes to obtain a uniformly dispersed titanium dioxide aqueous solution;

[0060] Step 2, the total amount of 0.05mmol of CoCl 2 、RuCl 3 , IrCl 3 (CoCl 2 : RuCl 3 : IrCl 3 The molar ratio is 6:2:2), and it is added into the titanium dioxide aqueous solution in step 1 in the form of an aqueous solution, and after continuing to stir for 10 minutes, a mixed solution is obtained;

[0061] Step 3: Dissolve 412 mg of NaOH and 20 mg of sodium borohydride in 1 mL of distilled water, then add it to the mixed solution in step 2, and stir at 25° C. for 15 min to perform a reduction reaction to obtain a titanium dio...

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Abstract

The invention relates to the technical field of preparation of catalytic materials, and specifically discloses a nano-catalyst and its preparation method and application. The nano-catalyst is prepared by using titanium dioxide, CoCl 2 、RuCl 3 , IrCl 3 etc. as raw materials, using a one-step rapid reduction method to synthesize titanium dioxide-supported CoRuIr nanocatalysts, which can be completed at room temperature, with the advantages of short synthesis time and easy operation. The synthesized nanocatalysts are used to catalyze the decomposition of hydrazine borane aqueous solution to produce hydrogen. It has extremely high catalytic activity and conversion rate, and the TOF value is as high as 8570h ‑1 , which is much higher than the noble metal catalysts that have been reported so far, and solves the problem that the existing noble metal catalysts used for hydrolysis of hydrazine borane to produce hydrogen have low catalytic activity and cannot achieve large-scale applications; and the preparation method provided is simple and has broad applications. market expectation.

Description

technical field [0001] The invention relates to the technical field of preparation of catalytic materials, in particular to a nano catalyst and its preparation method and application. Background technique [0002] With the increasing energy crisis and environmental pollution caused by fossil fuel consumption, it is urgent to find renewable green energy, and hydrogen energy is undoubtedly the most potential alternative energy. However, the safety and efficiency of hydrogen energy is still an urgent problem to be solved, so the development of safe and efficient hydrogen storage methods is a current research hotspot. [0003] Since hydrazine borane (N 2 h 4 BH 3 , HB) has a hydrogen content as high as 15.4wt%, is a safe and stable solid at room temperature and can be stored stably in aqueous solution, so it is considered to be a promising chemical hydrogen storage material, making it possible to provide safe and efficient hydrogen storage method is possible. Complete decom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J21/06B01J37/16B82Y30/00B82Y40/00C01B3/06
CPCY02E60/36
Inventor 鄢俊敏张野康霞高蕊刘冬雪段焱鑫姚佳欣
Owner JILIN UNIV
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