Page 95 - Principles of Catalyst Development
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82 CHAPTER 4
TABLE 4.15. Major I ndustriaI Zeolite Processes
Process Zeolite Products
----~~-------~-~------~~---
Catalytic cracking Faujasite Gasoline, fuel oil
Kerosene, jet fuel
Hydrocracking Modified faujasite Benzene, toluene,
Xylenes
Hydroisomerization Mordenite Gasoline and
Distillates
i- hexane, heptane
Dewaxing ZSM-5 mordenite Low power point lubes
Benzene alkylation ZSM-5 Styrene, ethyl benzene
Xylene isomerization ZSM-5 Paraxylene
Toluene
disproportionation ZSM·5 Benzene, toluene
Methanol-to-gasoline ZSM-5 Gasoline
Methanol-to-olefins Modified ZSM-5 Olefins
Fischer-Tropsch Modified ZSM-5 Hycrocarbons
functions offer exciting materials for novel and innovative process applica-
tions. (142,135) This research includes not only the search for new processes
but also investigation of other zeolite structures based on elements other
than silicon, for example, phosphorus. Table 4.15 lists the major industrial
processes using zeolites.
4.5. CONCLUDING REMARKS
This chapter has presented a summary of the important features of
research on catalytic materials. It is a changing world and new data will
be forthcoming. Nothing has been said about exciting new materials such
as metal sulfates, (144) phosphates, (145) metal-graphite intercalation com-
pounds/ 14 6) superbasic materials, (147) and carbides or nitrides, (148) all of
which await industrial exploitation.