Adsorbent layer for adsorption heat pump prepared with the surface-modified ferroaluminophosphate particles and inorganic silica binder

Modeling of type IV and V sigmoidal adsorption isotherms

“…with A = 3.186 AE 0.007, B = 0.525 AE 0.012, and C = 0.52 AE 0.01. An interconversion is also possible for the Fowler-Guggenheim isotherm presented in the introduction as eqn (4). Its exponent is correlated with m of the present isotherm by…”

“…86 The materials, presented in the following, contain some iron in addition. [3][4][5] Fig. 11 shows that the experimental water sorption isotherm follows eqn (24).…”

“…85 The isotherms are usually strongly sigmoidal. [3][4][5][6] AlPO 4 -5 has the AFI type zeolite structure and contains 1-dimensional micropores with a diameter of 0.742 nm. 86 The materials, presented in the following, contain some iron in addition.…”

“…1 An example for such isotherms the capillary condensation during the pore filling of micropores. It covers the adsorption of water on hydrophobic microporous solids such as aluminum phosphate (ALPO), silicon aluminum phosphate (SAPO) and similar zeolite analog materials, [2][3][4][5][6] metal organic frameworks (MOFs) 7 and activated carbon. 8,9 At last the capillary condensation in mesoporous materials has to be mentioned.…”