ABSTRACT
Activity measurement is one of the most fundamental experiments in catalysis research and the methodology for measuring activities of solid state catalysts is almost completely established. In contrast to this, the activity measurement itself has been a problem to be solved by a number of trials and experiences in the research of the liquid metal catalysis. The problem has only partly been solved and hence the situation mentioned above 9is still continuing. Thus, most of the experimental methods that will be described in this chapter will probably need further refinement.
