NDLI: Pyrolysis model of oil sand using thermogravimetric analysis

Content Provider	Springer Nature Link
Author	Wang, Qing Jia, Chunxia Jiang, Qianqian Wang, Yin Wu, Deyin
Copyright Year	2013
Abstract	In this paper, the derivative thermogravimetry (DTG) curve displays an overlapping peak which consists of two subpeaks for the major oil-producing stage of Indonesian oil sand. This study was conducted to supplement the insufficiencies of the previous studies, which neglected or oversimplified the processing of the overlapping peak and did not determine the kinetic mechanism. First of all, we assume a two-component parallel reaction model to describe the mass-loss process of the major oil-producing stage (overall stage) to obtain the separated stages. Then, we present an asymmetric multi-peak fitting method, bi-Gauss, to separate the overlapping peak. Based on the results of the bi-Gauss method, the kinetic mechanism was obtained using the integral master plot method, followed by the determination of the activation energy by the integral iso-conversional non-linear (NL-INT) method. The results show that the bi-Gauss method can produce satisfactory fitting results. Moreover, the separated stages follow single mechanism; while the overall stage does not follow a single mechanism and the mechanisms of the front and back segments of the overall stage are in accordance with those of the separated stages, which prove the reliability of the two-component parallel reaction model.
Starting Page	499
Ending Page	509
Page Count	11
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	116
Issue Number	1
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-11-27
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Oil sand Pyrolysis Thermogravimetric analysis Overlapping peak Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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