| http://www.w3.org/ns/prov#value | - The hydroprocessing catalysts may include a binder such as silica, silica/alumina or alumina or other metal oxides e.g. magnesia, titania, and the ratio of binder to zeolite will typically vary from 10:90 to 90:10, more commonly from about 30:70 to about 70:30 (by weight).
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