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Sodium borohydride hydrolysis hydrogen production catalyst, preparation method and application thereof

A hydrogen production technology of sodium borohydride and hydrolysis, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as shedding, and achieve low cost and high conditions Gentle, high-yield results

Active Publication Date: 2020-06-26
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, FengQ, MaJ.Appl.Surf. Sci.2013; 273:253-6), but these catalysts are mixtures of indefinite molecular formula The form of expression makes this catalyst prone to agglomeration, oxidation, and shedding during use.

Method used

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  • Sodium borohydride hydrolysis hydrogen production catalyst, preparation method and application thereof
  • Sodium borohydride hydrolysis hydrogen production catalyst, preparation method and application thereof
  • Sodium borohydride hydrolysis hydrogen production catalyst, preparation method and application thereof

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Experimental program
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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 catal...

Embodiment 2

[0049] Preparation of NiP / 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. Secondly, the aminophosphoric acid chelating resin after ball milling is added in the 250mL nickel chloride solution, and stirs 24h with the speed of 750r / min. The resulting solution was then vacuum filtered 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, with a heating rate of 5°C / min, to obtain NiP / RC.

[0051] The NiP / RC prepared above was mixed with citric acid at a mass ratio of 1:0.5 and ball milled for 3 hours to obtain a NiP / RC-citric acid mixed catalyst.

[0052] Subsequently, with 1g of sodium borohydride, 0.2g of prepared catalyst is ground and mixed uni...

Embodiment 3

[0055] Preparation of CoP / 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. Secondly, the aminophosphoric acid chelating resin after ball milling is added in the 500mL cobalt nitrate solution, and stirs 24h with the speed of 750r / min. The resulting solution was then vacuum filtered 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 the protection of nitrogen during the calcining process, and the heating rate was 10°C / min to obtain CoP / RC.

[0057] The CoP / RC prepared above was mixed with oxalic acid at a mass ratio of 1:10 and ball milled for 3 hours to obtain a CoP / RC-oxalic acid mixed catalyst.

[0058] Subsequently, with 1g of sodium borohydride, 0.2g of prepared catalyst is ground and...

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Abstract

The invention discloses a sodium borohydride hydrolysis hydrogen production catalyst as well as a preparation method and application thereof, and belongs to the field of catalyst synthesis. Accordingto the preparation method provided by the invention, the phosphoramidate chelate resin is used as a carrier to load Ni; the catalyst is a Co or NiCoP compound active component, nickel ions, cobalt ions or both of the nickel ions and the cobalt ions enter holes in the phosphoramidate chelate resin through electrostatic attraction and group acting force and are strongly coordinated with nitrogen-containing ligands, so that the nickel ions, the cobalt ions and the nitrogen-containing ligands are distributed and fixed in the resin, and a stable resin-nickel ion, resin-cobalt ion and resin-cobalt ion / nickel ion compound is formed; the compound is subjected to heat treatment, nickel ions, cobalt ions or a mixture of the nickel ions and the cobalt ions loaded on phosphoramidate chelate resin anda phosphorus source form a NiP, CoP or NiCoP compound, and the NiP, CoP or NiCoP compound is carbonized to change a carbon carrier. The preparation method has the advantages of mild conditions, low cost and high yield, is beneficial to industrial production, and does not cause environmental pollution.

Description

technical field [0001] The invention belongs to the field of catalyst synthesis, in particular to a sodium borohydride hydrolysis hydrogen production catalyst, 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 can effe...

Claims

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Application Information

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IPC IPC(8): B01J27/185B01J31/04C01B3/04
CPCB01J27/1853B01J31/04C01B3/04B01J35/23Y02E60/36
Inventor 柴丹张兄文
Owner XI AN JIAOTONG UNIV