NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and preparation method thereof

A nano-catalyst, hydrazine borane technology, applied in the field of hydrogen storage materials, can solve the problems of low turnover frequency, catalyst stability and poor recyclability

Active Publication Date: 2014-07-30
JIANGXI NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In 2011, the literature (Energy Environ. Sci. 2011, 4, 3355.) reported that Pt 0.89 Ni 0.11 The hydrogen selectivity of the catalyst for hydrogen production from hydrazine borane reached 93±1% at 50 °C, but its turnover frequency (TOF) was very low at only 18 molH 2 mol -1 metal·h -1 , and there are still problems such as poor stability and recyclability of the catalyst itself

Method used

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  • NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and preparation method thereof
  • NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and preparation method thereof
  • NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] 1) Add 20 mg of cetyltrimethylammonium bromide (CTAB) and 10 mg of graphene oxide (GO) into 5 mL of water and stir well.

[0034] 2) Add 0.09 mmol nickel chloride and 0.01 mmol potassium tetrachloroplatinate to step 1), stir and sonicate for 15 minutes.

[0035] 3) Add 40 mg sodium borohydride to step 2) and stir vigorously for 30 minutes.

[0036] 4) Centrifuge, wash and dry the reaction solution obtained in step 3) to obtain Ni with a loading capacity of 42.5 wt.%. 0.9 Pt 0.1 RGO composite nanocatalyst.

Embodiment 2

[0038] Step 1) in Example 1 was changed from cetyltrimethylammonium bromide (CTAB) to polyvinylpyrrolidone (PVP). Other steps are the same as in Example 1, to obtain Ni with a load of 42.5 wt.%. 0.9 Pt 0.1 RGO composite nanocatalyst.

Embodiment 3

[0040] Change the amount of graphene oxide (GO) in step 1) in Example 1 to 5 mg. Other steps are the same as in Example 1, and the Ni with a load of 60 wt.% is obtained 0.9 Pt 0.1 RGO composite nanocatalyst.

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Abstract

The invention provides a NiPt@RGO composite nano catalyst for producing hydrogen by using hydrazine borane and a preparation method thereof. The catalyst is prepared by using sodium borohydride (NaBH4) as a reducing agent to reduce precursors of metallic Ni and Pt and a graphene oxide (GO) carrier together. The catalyst shows very excellent catalytic performance and can catalyze the hydrazine borane at 50 DEG C, so that the hydrazine borane can be completely hydrolyzed, and hydrazine can be cracked to produce hydrogen, and the hydrogen turnover frequency (TOF) of the catalyst reaches 240 (molH2.mol<-1>metal.h<-1>). The method for preparing the catalyst is simple and convenient to operate, particularly the noble metal Pt content of the obtained optimal alloy catalyst is low (the molar ratio Ni/Pt is 9/1), and the catalyst is cheap and efficient.

Description

technical field [0001] The method of the invention relates to a NiPtRGO composite nano-catalyst used for hydrogen production from hydrazine borane and a preparation method thereof, belonging to the field of hydrogen storage materials. technical background [0002] As the energy crisis and environmental pollution become more and more serious, searching for clean and sustainable alternative energy has become a hot issue in the field of materials science. Hydrogen has the advantages of being clean, efficient, safe, and non-polluting, making it an ideal substitute for fossil fuels. In the national medium and long-term science and technology development plan (2006-2020), "hydrogen energy and fuel cell technology" is deployed as a cutting-edge technology for key support, and hydrogen production technology is one of the key research contents. The preparation of hydrogen is the basis for the application of hydrogen energy. Although hydrogen energy has been developing for decades, i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89C01B3/04
CPCY02E60/36
Inventor 卢章辉张主军陈祥树
Owner JIANGXI NORMAL UNIV
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