International Journal of Electrochemistry / 2011 / Article / Tab 1

Research Article

Some Applications of Bayes' Rule in Probability Theory to Electrocatalytic Reaction Engineering

Table 1

Postulated distribution pattern of 137 failure occurrences over a fixed time period in three independently operating (hypothetical) electrolytic plants using identical catalytic oxygen cathodes (Application 1).

Source of failure Number of cathode failures over a fixed period of operation
Plant 1 (B1)Plant 2 ( )Plant 3 ( )

A1: Catalyst surface area(1) 12 14 10
A2: Pore volume(2) 7 8 9
A3: Binder content(3) 9 5 7
A4: Catalyst content(4) 6 4 5
A5: Human error(5) 14 11 16

Total number of failures 48 42 47

(1) Electrolytic carbon type P33: specific surface area is less than stipulated 1000 m2/g.
(2) Electrolytic carbon type P33: specific pore volume is less than stipulated 2.3 cm3/g.
(3) PTFE binder content in electrode layer is less than stipulated 10%.
(4) CoTAA (dibenzotetraazaannulen cobalt II) catalyst content on carbon is less than stipulated 15%.
(5) Careless stack assemblage and general operation.

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