Extractable waxes from Greek lignites

Kampouris, EM; Constantinoglou, C; Prounias, N; Sideropoulos, T

dc.contributor.author	Kampouris, EM	en
dc.contributor.author	Constantinoglou, C	en
dc.contributor.author	Prounias, N	en
dc.contributor.author	Sideropoulos, T	en
dc.date.accessioned	2014-03-01T01:37:45Z
dc.date.available	2014-03-01T01:37:45Z
dc.date.issued	1973	en
dc.identifier.issn	00162361	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21693
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0015569185&partnerID=40&md5=a8553a7c69a285d1ba3ad3c1acaef482	en
dc.subject.other	COAL BYPRODUCTS	en
dc.title	Extractable waxes from Greek lignites	en
heal.type	journalArticle	en
heal.publicationDate	1973	en
heal.abstract	An investigation on the solvent-extraction yields of Greek lignites has shown that the yields are generally low compared with the yields from certain American and German lignites, and similar to the yields from Czechoslovakian lignites. The highest yields were obtained from lignites of the Psachna deposit. The only extract which resembled rather closely in its nature the Riebeck crude montan wax was obtained by benzene extraction from Ptolemais lignite. The most significant differences between benzene extracts from Greek lignites and Riebeck crude montan wax were the differences in melting points and the greater resin content of the Greek waxes. Extraction with benzene/methanol mixture instead of benzene gave higher yields and extracts characterized by higher melting points, and higher acid and ester values. The compatibility of the extracts with paraffin wax was low; only benzene extract from Ptolemais lignite was completely miscible. No relation was found between the wax yield and the ratio volatile matter/fixed carbon of the coal. We also conclude that extraction of waxes from Greek lignites is not commercially attractive. © 1972.	en
heal.journalName	Fuel	en
dc.identifier.volume	52	en
dc.identifier.issue	1	en
dc.identifier.spage	47	en
dc.identifier.epage	51	en