Preliminary study on macromolecular structure characteristics of Shenhua long flame coal

MA Lun; LU Da-rong; LIANG Han-dong; ZHU Shu-quan; DING Yi; LI Shan; CHEN Yu-fei

Volume 41 Issue 05

May 2013

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Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(05): 513-522

MA Lun, LU Da-rong, LIANG Han-dong, ZHU Shu-quan, DING Yi, LI Shan, CHEN Yu-fei. Preliminary study on macromolecular structure characteristics of Shenhua long flame coal[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 513-522.

Citation:

MA Lun, LU Da-rong, LIANG Han-dong, ZHU Shu-quan, DING Yi, LI Shan, CHEN Yu-fei. Preliminary study on macromolecular structure characteristics of Shenhua long flame coal[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 513-522.

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Preliminary study on macromolecular structure characteristics of Shenhua long flame coal

1.
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology(Beijing), Beijing 100083, China;
2.
School of Chemical and Environmental Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
3.
China Nuclear Power Engineering Company Limited Zhengzhou Branch, Zhengzhou 450052, China

Received Date: 2012-10-24
Rev Recd Date: 2012-12-23
Publish Date: 2013-05-30

Abstract

Abstract

By using ASE 350 (Accelerated Solvent Extraction) Shenhua long flame coal was extracted with mixed solvent of carbon disulfide/N-methyl pyrrolidone (CS₂/NMP) under high temperature and high pressure, and the extraction rate was about 25%. The extracted residue was degraded by ruthenium ion catalytic oxidation (RICO), then the products were examined with IC and GC/MS, which depends on thermal auxiliary-methyl esterification of tetramethyl ammonium hydroxide (TMAH, 25% methanol solution). The results show that the macromolecular structure of Shenhua coal contains alkyl side chains at a length of C_2~28 and alkyl bridge between aromatic rings at a length of C_2~22. The aromatic condensation level is relatively low (most are conjugated structure of 2~4 benzene rings). And there are many ether linked aromatic structures, oxygen groups like hydroxyl (-OH), carbonyl (C=O), methoxy (-OCH₃), and heteroatom compounds with sulfur and nitrogen.
- Shenhua long flame coal,
- solvent extraction,
- RICO,
- GC-MS

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References(30)

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