K. Roos et al., IMPACT OF ACCESSIBILITY AND ACIDITY OIL NOVEL MOLECULAR-SIEVES FOR CATALYTIC CRACKING OF HYDROCARBONS, Chemical engineering & technology, 20(5), 1997, pp. 326-332
The catalytic properties of extra-large pore aluminosilicate MCM-41, s
ilicon containing VPI-5 and aluminium containing ETS-10 were investiga
ted by MAT (Micro Activity Test) using n-hexadecane and 1,3,5-triisopr
opylbenzene as the model feeds and were then compared with the results
obtained from Y zeolite in the I-I-form and a commercial FCC (Fluid C
atalytic Cracking) catalyst. It could be demonstrated that not only th
e acidic properties of the investigated materials, but also the access
ibility to the internal active sites of the investigated materials hav
e a significant influence on activity and selectivity. It can be assum
ed that, by optimising structural and chemical properties, the mesopar
ously organised MCM-41 and related materials are suitable as active co
mponents in cracking catalysts for ''deeper'' cracking of high boiling
hydrocarbons.