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.
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