Page 13 - Gas Adsorption Equilibria
P. 13

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             In publishing this book the authors hope to contribute to

                    the development of effective and reliable methods to measure pure
                    gas and gas mixture adsorption equilibria;


                    preventing young  (and old)  experimenters from  doing all  the
                                                                 *)
                    mistakes we have done during our laboratory work ;
                    making experimental gas adsorption data measured today in many
                    laboratories all  over the  world  more  easily comparable  to each
                    other, as methods and procedures should be come more and more
                    similar and  possibly  also  will be  standardized (IUPAC)  in the
                    years to come.

             In view of the  complexity  of interaction  of molecules  from fluid,  i.  e.
          gaseous or liquid phases with the atoms of the surface of a solid material the
          authors  have put  their emphasis  on  experimental measurement methods
          approaching especially mixture adsorption phenomena. Of course we are well
          aware that simulation of adsorption  systems  based on  molecular models  is
          making  considerable progress.  This  especially is  promoted by  still  growing
          computer capacities and new and powerful software and simulation programs.
          However,  reality is  in experiment, not  in computer’s silica.  There only  our
          present knowledge  and  model of physical-chemical reality can be  reflected.
          Nevertheless, we  expect in  future a combination of highly  selective  chosen
          key experiments  and computer  simulations to  be the  most effective way to
          make progress in the complex field of gas mixture adsorption equilibria and
          probably also in  some neighboring fields like adsorption kinetics. However,
          all these  interesting  fields of adsorption science including  applications of
          adsorption  phenomena  to chemical engineering are not  considered  here but
          left to other authors.


             In view of space  limitations  neither all  of the  experimental details and
          tricks of the  various  measurement methods nor all of the analytic arguments
          of the  underlying  theories could  be  presented. If readers  do  have questions
          they are cordially invited to approach the authors, namely for the former RS ** )
                         ** )
          for the later JUK .
          *)  A true experimenter pursues his goal till  everything in the lab is ruined.  Often only then he
            becomes aware that nobody has taken notes of what was done and what has really happened
            (W. Sibbertsen, 1990).
          **)  keller@ift.maschinenbau.uni-siegen.de
            Staudt@inc.uni-leipzig.de
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