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Method and device for measuring combustion heat of material

A measurement method and technology of combustion heat, applied in the direction of material heat development, etc., can solve the problem of high test cost, and achieve the effect of reducing experimental error and reducing error

Pending Publication Date: 2021-05-11
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For newly synthesized and expensive and rare samples, the cost of testing gram-level samples is too high

Method used

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  • Method and device for measuring combustion heat of material
  • Method and device for measuring combustion heat of material
  • Method and device for measuring combustion heat of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Use this device to measure the heat of combustion of adipic acid (succinic acid), a secondary standard substance for heat of combustion.

[0051] First, the succinic acid sample and cotton thread were dried in a constant temperature drying oven at 100°C for 48 hours. Then, take it out and put it in a desiccator filled with silica gel for later use.

[0052] The succinic acid is pressed into a smooth-surfaced sheet reagent, and the sheet-shaped benzoic acid sample and cotton thread are accurately weighed using a millionth balance.

[0053] Tie the sheet-like succinic acid with holes on the cotton thread, then tie the cotton thread on the platinum wire, and finally fasten the two ends of the platinum wire to the ignition electrode, adjust the benzoic acid sample to be placed directly above the platinum crucible, and measure the ignition circuit Is it connected.

[0054] Tighten the upper cover of the combustion container, and open the valve at the bottom of the containe...

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Abstract

The invention discloses a method and a device for measuring combustion heat of a material. The method adopts a differential calorimetry method to measure the combustion heat of the material. The differential calorimetry method comprises the following specific measures: arranging an oxygen bomb calorimetric pool and a reference calorimetric pool in a water bath constant temperature environment; and configuring thermopiles with the same structure and consistent performance on the peripheries of the oxygen bomb calorimetric pool and the reference calorimetric pool, wherein the two thermopiles are reversely connected to form a differential calorimetric mode. The device comprises a water bath device, a calorimetric system and an oxygen bomb, the calorimetric system and the oxygen bomb are both arranged in a constant-temperature environment of the water bath device, the calorimetric system further comprises the oxygen bomb calorimetric pool and the reference calorimetric pool, and the thermopiles with the same structure and consistent performance are arranged on the peripheries of the oxygen bomb calorimetric pool and the reference calorimetric pool respectively. And the two thermopiles are reversely connected to form the differential calorimetric mode.

Description

technical field [0001] The invention relates to the technical equipment field of calorie measurement, more specifically, to a method and device for measuring the heat of combustion of a material. Background technique [0002] At 25°C and 101kPa, the heat generated when 1 mole of combustibles are fully combusted in oxygen to form stable compounds is called the heat of combustion. The heat of combustion of substances plays a vital role in judging the direction of chemical reactions and calculating the energy of chemical reactions. Combustion heat as the basis of thermochemical data has made great contributions to the study of the relationship between material structure and energy (the energy difference of isomers) and the development of quantum mechanics, and provides a basis for computer-aided technology design of drugs and new material molecules. A lot of basic data. [0003] For energetic materials, due to their high-energy characteristics and the limitations of various f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/26
CPCG01N25/26
Inventor 金波楚士晋彭汝芳郭金坤张青春黄琪
Owner SOUTHWEAT UNIV OF SCI & TECH
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