DIFF Subgroup
B01J 27/055 with alkali metals, copper, gold or silver
Introduced: January 1985
Full Title
Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds > Sulfur, selenium or tellurium; Compounds thereof > Sulfates > with alkali metals, copper, gold or silver
No child classifications to compare. This is a leaf node in both IPC and CPC.