非表示:
キーワード:
One-dimensional;
phase transition;
molecular sieve;
pNA;
AlPO4-5
要旨:
The thermodynamic behavior of dipolar molecules in a system of parallel straight channels (such as para-nitroaniline (pNA) adsorbed in the channels of AIPO4-5 molecular sieves) was studied theoretically. The interaction between the molecules is considered to be a superposition of long range interaction due to all dipoles in the crystal and nearest-neighbor interaction within the individual pore. The dipoles in a pore are regarded as a one-dimensional system.
This leads to a van der Waals-type equation of state. A phase transition exists below the critical temperature. For a real system (pNA in AlPO4-5), the isotherms, the critical point, and the coexistence region are calculated.
