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Surfactant-assisted coal liquefactionImproved process of coal liquefaction utilizing nonaqueous surfactant has increased oil yield from 50 to about 80%. Asphaltene molecule formation of colloid particles is prevented by surfactant. Separated molecules present more surface area for hydrogenation reaction. Lower requirements for temperature, pressure, and hydrogen lead to reduction in capital and operation costs.
Document ID
19760000517
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Hsu, G. C.
Date Acquired
August 8, 2013
Publication Date
March 1, 1977
Publication Information
Publication: NASA Tech Briefs
Volume: 1
Issue: 4
ISSN: 0145-319X
Subject Category
Materials
Report/Patent Number
NPO-13904
Accession Number
76B10517
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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