Graphenylene and inorganic graphenylene nanopores for gas-phase He/He separation: kinetic and steady-state considerations.

Selective membrane-based separation of light isotopes is considered to be possible based on the quantum phenomena. In this regard, the role of two mass-dependent effects, quantum tunneling and zero-point energy (ZPE), is realized to be consequential for selective separation of helium isotopes using appropriate membranes. In the present study, the efficiency of two analogous nanoporous membranes, graphenylene (GP) and inorganic graphenylene (IGP), for gas phase separation of 3He and 4He has been theoretically investigated.

Determination of ν2 fundamental band origin for BeH2 and BeD2 from deperturbation analysis of hot bands.

New vibration-rotation hot bands, i.e., 031 → 030 and 041 → 040, have been assigned and rotationally analyzed for the gaseous BeH2 molecule.