A Method for Detecting the Effect of Electron Beam Irradiation on Coal Free Radical Concentration Using Electron Paramagnetic Resonance

A technology of electron paramagnetic resonance and electron beam irradiation, which is applied in the direction of using electron paramagnetic resonance for analysis, etc., and can solve problems such as the study of free radical changes in coal samples.
CN103472083BInactive Publication Date: 2016-01-20SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for detecting the influence of electron beam irradiation on free radical concentration of coal by virtue of electron paramagnetic resonance. The method comprises the following experiment steps: (1) carrying out pretreatment on a coal sample; (2) irradiating the coal sample by electron beams of different doses; and (3) carrying out ESR (electron spin resonance) analysis on the coal sample before and after electron beam irradiation. By carrying out electron beam irradiation on the coal sample subjected to pretreatment, the coal sample with different irradiation doses can be obtained by controlling an electron accelerator. Then, analysis on Lande g factor, free radical concentration Ng, peak width delta H and peak height Hpp is carried out on the coal sample before and after electron beam irradiation so as to research the change of a coal structure. The method has the advantages that the operation is relatively simple and easy to master, the change of the free radical concentration of the coal can be measured in short time, and a good dose effect relation can be achieved, thereby laying a foundation for further research on a coal macromolecular structure.
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Description

technical field

[0001] The invention relates to a method for detecting the influence of electron beam irradiation on coal free radical concentration by electron paramagnetic resonance, which is helpful for further researching the structure of coal macromolecules, processing coal and improving yield. Background technique

[0002] Continuous differentiation and mutual penetration are the distinctive features of today's science, especially the development of chemistry, which has resulted in many emerging interdisciplinary subjects. Polymer radiation chemistry is the intersection of polymer chemistry and radiation chemistry. Polymer chemistry studies the formation, structure and transformation of polymers; radiation chemistry studies various chemical changes caused by the interaction of ionizing radiation and matter. Therefore, polymer radiation chemistry is to study the chemical changes and effects of the interaction of ionizing radiation with monomers and polymers, including ...

Claims

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