A Review on Catalytic Membranes Production and Applications

Abstract

The development of the chemical industry regarding reducing the production cost and obtaining a high-quality product with low environmental impact became the essential requirements of the world in these days. The catalytic membrane is considered as one of the new alternative solutions of catalysts problems in the industries, where the reaction and separation can be amalgamated in one unit. The catalytic membrane has numerous advantages such as breaking the thermodynamic equilibrium limitation, increasing conversion rate, reducing the recycle and separation costs. But the limitation or most disadvantages of catalytic membranes related to the high capital costs for fabrication or the fact that manufacturing process is still under development. This review article summarizes the most recent advances and research activities related to preparation, characterization, and applications of catalytic membranes. In this article, various types of catalytic membranes are displayed with different applications and explained the positive impacts of using catalytic membranes in various reactions. Copyright

Progress in Modeling of Silica-Based Membranes and Membrane Reactors for Hydrogen Production and Purification

“…The singular characteristics of silica (SiO2) are related to the ability of its elemental bricks (SiO4 tetrahedral) to be strictly connected, in order to increase the amount of various amorphous or crystallized solids, commonly macroporous, mesoporous, or microporous (Table 1). Compared to other common single oxides such as Al2O3, TiO2, or ZrO2, silica may be more easily synthesized as an Palladium membrane technology played the largest role in the field of hydrogen separation and purification [10][11][12][13], even though in recent years, silica membranes attracted a relevant interest due to their low cost, high permeability, and easy manufacturing. To our best knowledge, no comprehensive reviews on modeling of silica MRs performance for hydrogen production/separation have been noticed.…”

“…Being an open system, an MR allows the selective removal of a desired product from the reaction side for permeation through the membrane while shifting the reaction system towards the products. Consequently, the reaction conversion is enhanced, with the possibility of overcoming the thermodynamic conversion of the correspondent TR [13].…”

“…On the other hand, the specific thermodynamic constrains limiting the performance of the TRs can be circumvented by using innovative integrated systems such as MRs, which represent an integrated system in which a catalytic reaction and the hydrogen separation take place simultaneously ( Figure 1) [13].…”

“…On the other hand, the specific thermodynamic constrains limiting the performance of the TRs can be circumvented by using innovative integrated systems such as MRs, which represent an integrated system in which a catalytic reaction and the hydrogen separation take place simultaneously ( Figure 1) [13]. Palladium membrane technology played the largest role in the field of hydrogen separation and purification [10][11][12][13], even though in recent years, silica membranes attracted a relevant interest due to their low cost, high permeability, and easy manufacturing. To our best knowledge, no comprehensive reviews on modeling of silica MRs performance for hydrogen production/separation have been noticed.…”

Preparation, Stability and Local Piezoelectrical Properties of P(VDF-TrFE)/Graphene Oxide Composite Fibers

“…In recent years, polymer nanocomposites fiber microstructures have received great attention due to improved physical properties, such as higher mechanical stability, improved thermal properties, non-toxicity, and more possibilities of modification than the original polymer matrix. This allows the use of these composites in various commercial applications, such as biomedical materials [1], gas filtration membranes [2], water harvesting [3][4][5], catalytic membrane [6], polymer electrolytes [7][8][9], and energy harvesting [10][11][12][13]. One of the best polymers such as polyvinylidene fluoride (PVDF) and copolymers of poly(vinylidene fluoride) and poly trifluoroethylene viz.…”