研究目的
Investigating the application of laser-induced voltage (LIV) method in the analysis of the oil shale pyrolysis process.
研究成果
LIV can be applied to the characterization of the oil shale pyrolysis process as it reflects the composition and surface structure of oil shale pyrolysis samples. The LIV peak values depend on the pyrolysis temperature, showing a decrease, increase, and decrease with the increase in temperature from 25 to 200 °C, from 200 to 400 °C, and above 400 °C, respectively.
研究不足
The study is limited to the analysis of oil shale from Huadian, and the LIV method's applicability to other types of oil shale or pyrolysis conditions is not explored.
1：Experimental Design and Method Selection:
A 248 nm laser was used to analyze oil shale at different pyrolysis temperatures. The LIV effect was induced by a KrF pulsed laser.
2：Sample Selection and Data Sources:
Oil shale sample from Huadian in the northeast region of China was used.
3：List of Experimental Equipment and Materials:
KrF pulsed laser, tubular furnace, Keithley 2400 source meter, oscilloscope.
4：Experimental Procedures and Operational Workflow:
The oil shale sample was heated to 600 °C at a heating rate of 10 °C/min. The LIV effect was measured under different biases.
5：Data Analysis Methods:
The dependence of the LIV signal peak on oil shale was analyzed, and the results were compared with TGA-DSC, TG-FTIR-MS, and SEM analyses.
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