Page 233 - Principles of Catalyst Development
P. 233

222                                                      CHAPTER  8





                          800





                       u
                       o   700
                       w
                       a::
                       :::)
                       l-                    /'
                       e:(                      REMOVAL  FASTER
                       a::
                       w
                       a..
                       ~
                       w   600
                       I-

                                       ,
                                        I
                                       I
                                           I-- CARBON  AND  HOT  BAND
                          500~----~~~~----~----~--~
                              a     0.2    0.4     0.6    0.8    1.0
                                    RELATIVE  TUBE  LENGTH
            Figure 8.27.  Carbon  deposition  and  hot  band  formation  during  methane stearn  reforming.


           Similar analyses  of unknown  situations  will  no  doubt  lead to  solutions as
           successful  and  innovative as those given.
                With  the  end  of  this  chapter  we  conclude  this  excursion  into  the
           principles of catalyst development. We  have learned much about the nature
           of catalysts,  what they  do,  what they are,  and  how  to  select,  prepare, test,
           and  preserve  them.  Guidance  has  come  from  the  work  of many  brothers
           passed  before  us  and  inspiration  from  contemporaries.  We  have  seen  how
           science and  technology are  pushing back the veil  of mystery and alchemy,
           and  yet  the  magic  remains.
               As for the future, many exciting discoveries await us, leading ultimately
           to the day when catalysts are indeed scientifically designed. Catalysis is the
           key  to innovative developments in  chemical  processing, both for profit and
           health. The reader is  urged to follow the guidelines put forth here but always
           to find  his or her own style. Good luck.  May your search bring you as much
           fun  as  it  has  for  me.
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