silica-aluminum
silicoaluminophosphate
Sinopec
solid acid
substitutes for CFCs
sulfide
sulfur oxygen
Superfine ZSM-5
synthesis mesitylene
synthetic oil PIB
Talos
TMB Catalyst
trimethylbenzene Isomerization
trimethylbenzene to durene
UOP
Zeochem
Zeolite
ZnO Desulphurizer