Photocatalytic Reaction of Gas-Phase Naphthalene on Paint- and Sunscreen-Coated Surfaces

Table 3

Thiele Modulus, effectiveness factor, and Weisz-Prater criterion for paint systems used in these experiments.

Material	Thiele Modulus 𝜙	Effectiveness factor 𝜂	Weisz-Prater criterion 𝐶WP
30% relative humidity
P1 thin	84.8	0.012	84.8
P1 thick	158	0.006	158
P2 thin	21.5	0.046	21.5
P2 thick	30.4	0.033	30.4
70% relative humidity
P1 thin	88.4	0.011	88.4
P1 thick	212	0.005	212
P2 thin	23.7	0.042	23.7
P2 thick	43.1	0.023	43.1