Solubilization rules of different states under small molecules with ultrasonic extraction
Abstract：Tongting coal was extracted with isometric carbon disulfide solvent by ultrasonic and soxhlet methods. The extracts were analyzed using a GC/MS. The results show that the existence of ultrasonic field shortened the extraction time and increased the yield obviously. The long-chain alkene is a significant dissolution evidence of small molecules trapped in the coal-ma- trix network. The aromatic and aromatic ring containing components have an affinity with micropore, while the heteroatomic compounds, cycloalkanes and isoalkanes prefer to exist in coal- matrix network. The entanglements and crosslinkages between the molecules were easily disengaged by ultrasonic vibration. The ultrasonic cavitation accelerated the mass transfer rate of solvent, and as a result of both effects, network of small molecules was released earlier about 600 h.
Keywords：coalisometric carbon disulfidesoxhlet extractionultrasonic extractionGC/MSextraction mechanism
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 91-94 )