Gas constant pressure capacity tester

A volumetric measurement and gas technology, applied in the field of quantitative analysis of chemical substances, can solve the problems of poor repeatability of analysis results, difficult to obtain accurate results, and complicated measurement methods, and achieve the effects of simple method, good repeatability and high accuracy

Inactive Publication Date: 2013-01-30
车瀛照
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as many as six kinds of reagents are used in the iodometric method, it is troublesome to configure the reagents, the measurement method is complicated, it is difficult to obtain accurate results, and the repeatability of the analysis results is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Sample 1: lithium borohydride sample weight: 0.0325g

[0075] Solvent: Dioxane

[0076] Hydrogen release volume:

[0077] V 1 =2.10+2.25+2.80+2.70=9.85

[0078] V 2 =41.10+42.05+42.35+41.95=167.45

[0079] V 2 -V 1 = 167.45-9.85 = 157.60

[0080] Atmospheric pressure P at the time of detection t =999.0

[0081] Ambient temperature T during detection t =32°C+273=305°K

[0082] Look up the table: P H2O =35.663

[0083] P S =38.756

[0084]

[0085] = ( 167.45 - 9.85 ) × ( 999.0 - 35.663 - 38.756 ) × 273 ( 273 + 32 ) ...

Embodiment 2

[0088] Sample 2: lithium borohydride sample weight: 0.0270g

[0089] Solvent: Dioxane

[0090] Hydrogen release volume:

[0091] V 1 =3.40+4.45+3.45+4.00=15.30

[0092] V 2 =35.90+37.30+36.50+36.80=146.50

[0093] V 2 -V 1 = 146.50-15.30 = 131.20

[0094] Atmospheric pressure P at the time of detection t =999.0

[0095] Ambient temperature T during detection t =32°C+273=305°K

[0096] Look up the table: P H2O =35.663

[0097] P S =38.756

[0098]

[0099] = ( 146.50 - 15.30 ) × ( 999.0 - 35.663 - 38.756 ) × 273 ( 273 + 32 ) ...

Embodiment 3

[0105] Sample 3: lithium borohydride sample weight: 0.0229g

[0106] Solvent: Glycerin

[0107] Hydrogen release volume:

[0108] V 1 =3.30+4.40+3.40+3.95=15.05

[0109] V 2 =29.95+30.90+30.85+30.90=122.60

[0110] V 2 -V 1 = 122.60-15.05 = 107.55

[0111] Atmospheric pressure P at the time of detection t =1008.0

[0112] Ambient temperature T during detection t =29.8°C+273=302.8°K

[0113] Look up the table: P H2O =31.461

[0114] P S =32.668

[0115]

[0116] = ( 122.60 - 15.05 ) × ( 1008.0 - 31.461 - 32.668 ) × 273 ( 273 + 29.8 ) ...

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Abstract

The invention relates to a gas constant pressure capacity tester used for hydride quantitative analysis. The gas constant pressure capacity tester includes a constant pressure controller, a comb tube, graduated tubes, a constant pressure funnel and a reaction container. Specifically, the comb tube includes an upper comb tube and a lower comb tube that are vertically symmetrical and are connected by the graduated tubes. The upper comb tube and the lower comb tube are respectively connected to the constant pressure funnel and the constant pressure controller. The constant pressure funnel and the reaction container are in sealed connection so as to form a sealed system. The gas constant pressure capacity tester provided in the invention has the advantages of easy manufacturing, high accuracy, convenient operation, and good repeatability, etc., and can make a hydride quantitative analysis method simple, accurate, and rapid.

Description

technical field [0001] The invention relates to the field of quantitative analysis of chemical substances, in particular to a gas constant pressure capacity measuring instrument for quantitative analysis of hydrides. Background technique [0002] Due to its rich resources and non-polluting characteristics, hydrogen energy is one of the ideal, efficient and clean new energy sources to replace fossil energy in the future. The effective storage of hydrogen is an urgent problem to be solved in the current hydrogen energy utilization. Traditional metal hydride hydrogen storage materials are difficult to meet the practical application requirements of large-scale utilization of hydrogen energy due to their low gravimetric hydrogen storage density (≤3.8wt%). Therefore, the research and development of new hydrogen storage materials with high capacity is an important way to develop hydrogen energy technology. New borohydride hydrogen storage materials composed of light elements have...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N31/20G01F22/02
Inventor 车瀛照
Owner 车瀛照
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