About: http://webisa.webdatacommons.org/113847034

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	To prevent readsorption of volatiles (and de-activation of the zeolite), the firing (or densifying) step is often conducted in a controlled atmosphere void of moisture and other gases, such as under vacuum.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es