Biogas is a renewable energy produced from the anaerobic digestion process. It is mainly
composed by 70% methane (CH 4) and 30% carbon dioxide (CO 2), with minor fraction of …

Thermally rearranged (TR) polymers are unique high-performance materials with rigid
aromatic rings like benzoxazoles and benzimidazoles, that are produced/transformed by …

Thermally rearranged (TR) polymers have seen a growing role in gas separation
membranes. Further exploitation of TR membranes with enhanced mechanical properties …

Conventional gas separation membranes made of glassy polymers often exhibit increased
segmental motion and reduced selectivity when exposed to high-pressure condensable …

Separation membranes, which have the possibility to develop energy-saving and compact
processes, are expected to be applied in the field of CO2 separation and capture and are …

A diamine monomer 5-amino-2-(4-hydroxy-3-aminobenzene)-benzimidazole (OH-BIA)
containing both benzimidazole and hydroxyl groups was synthesized through a facile two …

The increasing challenges in meeting the clean air demand have fuelled growing
environmental awareness to secure effective air purification and separation techniques …

As ultra large-scale integration (ULSI) circuits develop quickly, traditional polyimide (PI)
urgently needs modification due to its high dielectric constant, to make it meet the …

Tuning coupled free volume and pore size distribution is of great significance for membrane-
based gas separation. In the present work, a polyimide membrane containing bulky-CF 3 …

Helium extraction from natural gas is energy extensive since> 95% feed stream needs to be
liquefied in multi-cycles. Membrane gas separation is an energy-efficient alternative …