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Borohydride fuel formulation

A technology of borohydride and sodium borohydride, applied in the direction of metal hydride, fuel cell additives, fuel, etc., can solve the problem of rapid dissolution of borohydride that is not fully resolved

Inactive Publication Date: 2007-08-29
VERTELLUS PERFORMANCE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the literature does not adequately address the problem of rapidly dissolving borohydrides

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: the influence of NaOH on SBH dissolution rate

[0015] SBH powders with different NaOH contents were formulated. The pre-weighed solid mixture was mixed in a coffee bean grinder for about 2 minutes, and the resulting powder was sieved through an 80 mesh (177 micron) sieve. The sieved powder was placed in water to prepare 10 ml of a 30% solution (based on SBH+NaOH, %), and was slowly stirred with a magnetic stirring bar to dissolve it. Table 1 below shows the average value of the complete dissolution time of two dissolution operations.

[0016] Table 1

[0017] Dissolving time (seconds)

[0018] When these data were normalized to 100% SBH content, the corrected time (corrected dissolution time) curves shown in Table 2 below were obtained.

[0019] Table 2

[0020] Corrected dissolution time (seconds)

[0021] The results showed that the dissolution time per gram of SBH began to shorten when the NaOH content was 2%, then increased whe...

Embodiment 2

[0022] Embodiment 2: the dissolving time of caplet

[0023] Caplets were formed under a pressure of 10,000 psi (68.9 kPa) and dissolved as described in Example 1. The results are listed in Table 3 and Table 4.

[0024] table 3

[0025] composition

Dissolving time (seconds) (data of two times)

0%NaOH

699，659

2%NaOH

579，545

5%NaOH

450，510

10%NaOH

405，408

13%NaOH

339，354

15%NaOH

299，324

25%NaOH

290，269

[0026] Table 4: Data normalized to 100% SBH

[0027] composition

Embodiment 3

[0028] Embodiment 3: the relationship between the caplet dissolution rate and the amount of solution

[0029] The SBH caplets, and the caplets of the formulation comprising 87% SBH / 13% NaOH were dissolved as described in Example 1 to form solutions weighing 10 grams and 100 grams. The results are listed in Table 5 below.

[0030] table 5

[0031] Dissolving time (seconds)

[0032] The data illustrate that the difference between the SBH and NaOH formulations increases as larger volumes of solution are prepared. Thus, the benefit of including NaOH in the formulation increases as the number of solutions increases.

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PUM

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Abstract

The present invention provides a solid composition containing at least one borohydride compound and at least one base.

Description

technical field [0001] The present invention relates to solid borohydride-containing formulations that can be used to generate hydrogen in fuel cells. Background technique [0002] Compositions comprising borohydrides are known to be useful as hydrogen sources for hydrogen fuel cells, typically in the form of aqueous solutions. Compositions comprising solid borohydride have also been used. For example, US Publication No. 2005 / 0238573 discloses the use of solid sodium borohydride which is mixed with an aqueous acid to generate hydrogen gas. However, this document does not adequately address the problem of rapidly dissolving borohydrides. [0003] The present invention solves this problem by discovering a solid formulation of borohydride that dissolves at least at the same rate as the pure borohydride salt. Contents of the invention [0004] The present invention provides a solid composition comprising (a) 50-98% of at least one borohydride; (b) 2-50% of at least one base...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/06
CPCC01B3/065C01B6/21C10L9/10H01M8/04216H01M8/065Y02E60/362Y02E60/50Y02E60/36Y02P70/50C01B6/13C01B6/19C07F5/02C01B6/23
Inventor J·H·雅马莫托
Owner VERTELLUS PERFORMANCE CHEM