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Method for constructing organic macromolecular structure of brown coal

A technology of macromolecular structure and structure model, applied in teaching models, instruments, educational appliances, etc., can solve the problems that cannot reflect the distribution law of benzene carboxylic acid yield, and achieve the effect of wide applicability and high operability

Inactive Publication Date: 2017-06-27
BEIJING UNIV OF CHEM TECH
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  • Claims
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Problems solved by technology

However, the structure of the above-mentioned lignite cannot reflect the benzene carboxylic acid products obtained by the selective oxidation of lignite and their yield distribution. There are 12 compounds in these benzene carboxylic acids, including benzoic acid, phthalic acid, isophthalic acid, Formic acid, trimellitic acid, trimellitic acid, biphenyltricarboxylic acid, biphenyltetracarboxylic acid, trimellitic acid, pyromellitic acid, benzene pentacarboxylic acid, mellitic hexacarboxylic acid

Method used

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  • Method for constructing organic macromolecular structure of brown coal
  • Method for constructing organic macromolecular structure of brown coal
  • Method for constructing organic macromolecular structure of brown coal

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Embodiment 1

[0033] In this embodiment, the construction of the organic matter structure of Huolinhe lignite is taken as an example for illustration.

[0034] Weigh 1g of Huolinhe lignite, 2.9g of NaOH, 21ml of H 2 O join 50cm 3 In the high-temperature and high-pressure reaction kettle, the lid of the kettle is sealed, and the oxygen gas is 4.9MPa. Put the reaction kettle into the preheated heating mantle to heat, and start timing when it reaches 238°C. After the reaction reached 31 minutes, the reaction kettle was cooled to terminate the reaction, and the residue after the reaction was filtered. The filtrate was washed with H 2 SO 4 Acidify to pH=1.5, filter again, and dilute the filtrate to volume.

[0035] The acidified filtrate was analyzed by high performance liquid chromatography to determine the content of benzenecarboxylic acid. The HPLC used for HPLC analysis is a Waters 2695 type HPLC (produced by Waters Technology Co., Ltd., place of origin: the U.S.); the operating condit...

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Abstract

The invention relates to a method for constructing an organic macromolecular structure of brown coal. The method is characterized in that based on the yield distribution of selectivity oxidation product benzene carboxylic acid of the brown coal, elemental analysis is used for acquiring element composition of the brown coal; 13CNMR is used for carrying out qualitative and quantitative analysis on different types of carbons; and FTIR is used for carrying out qualitative analysis on functional groups in the coal. Firstly, peak separation processing is performed on brown coal 13CNMR so that the number of the different types of the carbons is calculated and information of different types of aromatic structures is calculated, and by combining the yield distribution information of the oxidation product benzene carboxylic acid of the brown coal, an aromatic core structure model of the organic macromolecular structure of brown coal is constructed; and then, based on the aromatic core structure model, by combining results of the elemental analysis , the 13CNMR analysis, the FTIR analysis, the XPS analysis and the content analysis of and carboxyl, an organic macromolecular structure model of the brown coal is constructed and a molecular formula and the molecular weight are acquired.

Description

technical field [0001] The invention relates to a method for constructing a lignite organic matter macromolecular structure model based on the yield distribution of lignite oxidation product benzene carboxylic acid. Background technique [0002] Lignite is an important carbon-containing energy source with abundant reserves on the earth. For example, China has 130 billion tons of lignite reserves, the United States has 40.7 billion tons of lignite reserves, Germany has 43.3 billion tons of lignite reserves, and Australia's La Trobe Valley. Lignite reserves are 160 billion tons. Lignite is widely used in combustion, gasification, pyrolysis, chemical production and other fields. As we all know, the understanding of the organic matter structure of coal is the basis of its utilization. However, compared with the commonly used bituminous coal, the organic matter structure of lignite is less studied, resulting in a relatively low utilization rate. Therefore, in order to efficien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/26
CPCG09B23/26
Inventor 吴卫泽杨帆
Owner BEIJING UNIV OF CHEM TECH
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