(under subclass 664) Subject matter in which an aluminosilicate composition such as a zeolite, clay, etc., is employed.
(1) Note. The aluminosilicate may be naturally occurring or synthetically formed, and often has a crystalline structure which may be modified in some way to remove or add a constituent, for example, by ion exchange or by impregnation techniques.
SEE OR SEARCH THIS CLASS, SUBCLASS:
377, for double-bond isomerization of an alicyclic in which an aluminosilicate catalyst is employed.
518, for isomerization of aromatic hydrocarbons in which an aluminosilicate catalyst is employed.
671, for olefin skeletal isomerization reactions in which aluminosilicate is used.
739, for paraffin skeletal isomerization reactions in which aluminosilicate is used.
