About: http://webisa.webdatacommons.org/142851616

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Alternatively, before addition of the cationic mediator, the clay may be pre-exfoliated with a cationic surfactant such as an ammonium salts.
http://www.w3.org/ns/prov#wasQuotedFrom	google.co.uk