Poly[3-ethyl-1-vinyl-imidazolium] diethyl phosphate/Pebax® 1657 Composite Membranes and Their Gas Separation Performance

1-Ethyl-3-(2,4,6-trimethyl­phen­yl)imidazolium tetra­fluoro­borate

The title compound, C(14)H(19)N(2) (+)·BF(4) (-), was obtained by reaction of 1-ethyl-3-(2,4,6-trimethyl-phen-yl)imidazolium tetra-fluoro-borate with sodium tetra-fluoro-borate. The imidazole ring makes a dihedral angle of 78.92 (13)° with the benzene ring.

Plasticization of gas separation membranes*

For the investigation of the plasticizing effect of carbon dioxide on polymers used for gas separation membranes new experimental methods have been developed that measure the sorption kinetics as well as the dilation kinetics. Comparing dilation and sorption kinetics at low and elevated pressures gives information about different types of swelling behaviour depending on the pressure level. Volu...

Polymeric Gas Separation Membranes: What Makes them Industrially more Attractive?

Hydrogen Separation by Natural Zeolite Composite Membranes: Single and Multicomponent Gas Transport

Single and multicomponent gas permeation tests were used to evaluate the performance of metal-supported clinoptilolite membranes. The efficiency of hydrogen separation from lower hydrocarbons (methane, ethane, and ethylene) was studied within the temperature and pressure ranges of 25-600 °C and 110-160 kPa, respectively. The hydrogen separation factor was found to reduce noticeably in the gas m...

Tunable Composite Membranes for Gas Separations