General form of the cross-energy parameter of equations of state

Coutinho, JAP; Vlamos, PM; Kontogeorgis, GM

dc.contributor.author	Coutinho, JAP	en
dc.contributor.author	Vlamos, PM	en
dc.contributor.author	Kontogeorgis, GM	en
dc.date.accessioned	2014-03-01T01:49:52Z
dc.date.available	2014-03-01T01:49:52Z
dc.date.issued	2000	en
dc.identifier.issn	0888-5885	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25958
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	VAPOR-LIQUID-EQUILIBRIA	en
dc.subject.other	HYDROCARBON BINARY-MIXTURES	en
dc.subject.other	DER-WAALS-EQUATION	en
dc.subject.other	INTERACTION COEFFICIENTS	en
dc.subject.other	ASYMMETRIC MIXTURES	en
dc.subject.other	CRITICAL CONSTANTS	en
dc.subject.other	POLYMER-SOLUTIONS	en
dc.subject.other	CUBIC EQUATIONS	en
dc.subject.other	PENG-ROBINSON	en
dc.subject.other	CPA EQUATION	en
dc.title	General form of the cross-energy parameter of equations of state	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	Phase equilibrium calculations with cubic equations of state are sensitive to mixing and combining rules employed. In this work, we present a suitable general form of the combining rule for the cross-energy parameter, often considered to be the key property in phase equilibrium calculations. The proposed rule is derived from molecular considerations, namely, the London-Mie theory. The typically used geometric mean (GM) and other combining rules can be deducted from this expression from different values of the parameter n, which is the attractive tail of the Mie potential. We show that using this n parameter as the variable instead of the commonly employed k(ij) offers useful insight into the behavior of cubic equations of state for a large number of asymmetric systems including gas/alkanes, polymer solutions and blends, and alcohol/alkane and gas/solid systems.	en
heal.publisher	AMER CHEMICAL SOC	en
heal.journalName	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH	en
dc.identifier.isi	ISI:000088726600056	en
dc.identifier.volume	39	en
dc.identifier.issue	8	en
dc.identifier.spage	3076	en
dc.identifier.epage	3082	en