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Hydrogen production catalyst by hydrolysis of sodium borohydride, preparation method and application thereof

A hydrogen production technology of sodium borohydride and hydrolysis, applied in the direction of physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc., can solve the problems of easy agglomeration, shedding, oxidation, etc. , to achieve the effect of no environmental pollution, low cost and high yield

Active Publication Date: 2021-02-02
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, catalysts are based on Ni-based catalysts (Seven F, Sahiner N.Int.J.HydrogenEnergy 2014; 39:15455-63), Co-based catalysts (Li H, Liao J, Zhang X, Liao W, Wen L, Yang J , Wang H, Wang R.J.Power Sources 2013; 239:277-83), binary Co-based and Ni-based catalysts (Guo Y, Dong Z, Cui Z, Zhang X, Ma J.Int.J.Hydrogen Energy 2012; 37 :1577-83; Kantürk Figen A.Int.J.Hydrogen Energy 2013;38:9186-97.), and ternary Co-Ni-B (Li H, Wu Y, Zhang J, Dai W, Qiao M. Appl. Catal .,A 2004; 275:199-206) and Co–Ni–P catalysts (Guo Y, Feng Q, MaJ.Appl.Surf.Sci.2013; 273:253-6), but these catalysts are of indeterminate formula Expressed in the form of a mixture, this catalyst is prone to agglomeration, oxidation, and shedding during use

Method used

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  • Hydrogen production catalyst by hydrolysis of sodium borohydride, preparation method and application thereof
  • Hydrogen production catalyst by hydrolysis of sodium borohydride, preparation method and application thereof
  • Hydrogen production catalyst by hydrolysis of sodium borohydride, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of NiCoP / RC-malic acid catalyst

[0041] First, 20 g of phosphoramidate chelating resin was ball-milled for 3 hours to make it into powder. Subsequently, nickel chloride and cobalt chloride were dissolved in ultrapure water to prepare 0.15mol L -1 250mL of nickel chloride solution and 250mL of cobalt chloride solution were mixed together to form solution A; the ball-milled aminophosphoric acid chelating resin was added to solution A, and stirred at a speed of 750r / min for 24h; The resulting solution was then suction filtered under reduced pressure and washed with distilled water. Afterwards, the obtained solid was vacuum-dried at 50°C for 6h; and calcined in a tube furnace at 1000°C for 1h, under nitrogen protection during the calcination process, and the heating rate was 5°C / min to obtain NiCoP / RC.

[0042] The NiCoP / RC prepared above was mixed with malic acid at a mass ratio of 1:1 and ball milled for 3 hours to obtain a NiCoP / RC-malic acid mixed catalys...

Embodiment 2

[0049] Ni 2 Preparation of P / RC-citric acid catalyst

[0050] First, 20 g of phosphoramidate chelating resin was ball-milled for 3 hours to make it into powder. Subsequently, nickel chloride was dissolved in ultrapure water to prepare 0.05mol L -1 The solution. Next, add the phosphoramidate chelating resin after ball milling into 250mL of nickel chloride solution, and stir for 24h at a speed of 750r / min. The resulting solution was then suction filtered under reduced pressure and washed with distilled water. Afterwards, the obtained solid was vacuum-dried at 50° C. for 6 h. And calcined in a tube furnace at 600°C for 5h, under nitrogen protection during the calcining process, and the heating rate was 5°C / min, to obtain Ni 2 P / RC.

[0051] The above-prepared Ni 2 Mix P / RC and citric acid at a mass ratio of 1:0.5 and ball mill for 3 hours to obtain Ni 2 P / RC-citric acid mixed catalyst.

[0052] Subsequently, 1 g of sodium borohydride and 0.2 g of the prepared catalyst we...

Embodiment 3

[0055] co 2 Preparation of P / RC-phosphoric acid catalyst

[0056] First, 20 g of phosphoramidate chelating resin was ball-milled for 3 hours to make it into powder. Subsequently, cobalt nitrate was dissolved in ultrapure water to prepare 2.5mol L -1 The solution. Next, add the phosphoramidate chelating resin after ball milling into 500mL cobalt nitrate solution, and stir at a speed of 750r / min for 24h. The resulting solution was then suction filtered under reduced pressure and washed with distilled water. Afterwards, the obtained solid was vacuum-dried at 50° C. for 6 h. And calcined in a tube furnace at 1100°C for 3h, under nitrogen protection during the calcining process, and the heating rate was 10°C / min, that is, Co 2 P / RC.

[0057] The above-prepared Co 2 P / RC and oxalic acid were mixed at a mass ratio of 1:10 and ball milled for 3 hours to obtain a Co2P / RC-oxalic acid mixed catalyst.

[0058] Subsequently, 1 g of sodium borohydride and 0.2 g of the prepared catal...

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Abstract

The invention discloses a hydrogen production catalyst by hydrolysis of sodium borohydride, a preparation method and an application thereof, belonging to the field of catalyst synthesis. In the preparation method of the present invention, the phosphoramidate chelating resin is used as a carrier to load Ni, Co or NiCoP composite active components, and nickel ions, cobalt ions or both enter into the phosphoramidate chelating resin inside by electrostatic attraction and group force. In the pores, and strongly coordinate with the nitrogen-containing ligands, so that they are distributed and fixed inside the resin, forming stable resin-nickel ions, resin-cobalt ions, resin-cobalt ions / nickel ion complexes; heat treatment of the above complexes , nickel ions, cobalt ions or a mixture of the two loaded on the aminophosphoric acid chelating resin form Ni with phosphorus source 2 P. Co. 2 P or NiCoP compound, and itself is carbonized to change the carbon support. The preparation method of the invention has mild conditions, low cost and high yield, is beneficial to industrialized production, and does not cause environmental pollution.

Description

technical field [0001] The invention belongs to the field of catalyst synthesis, in particular to a hydrogen production catalyst by hydrolysis of sodium borohydride, a preparation method and an application thereof. Background technique [0002] In order to overcome future energy shortages and environmental pollution problems, it is increasingly important to vigorously develop technologies that utilize hydrogen energy. Hydrogen energy has attracted much attention due to its characteristics of storability, high efficiency and cleanliness. Hydrogen fuel cells have broad application prospects in fixed power stations, electric vehicles, military special power supplies, mobile power supplies, etc. To meet the needs of large-scale production of fuel cells, finding a way to prepare high-purity hydrogen is the key to the development of portable power supply technology. [0003] NaBH 4 Catalytic hydrolysis is a new hydrogen generation technology that is convenient, practical and ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/185B01J31/04C01B3/04
CPCB01J27/1853B01J31/04B01J35/0013C01B3/04Y02E60/36
Inventor 柴丹张兄文
Owner XI AN JIAOTONG UNIV
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