{HEAD ~ Chemical composition} of {TAIL ~ binders} has not been taken into account where, in this invention, Si/Al elemental ratios are referred to 
of
{ HEAD ~ Chemical composition } of { TAIL ~ binders } has not been taken into account where , in this invention , Si / Al elemental ratios are referred to
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH