Membranes and Monoliths

A range of MOF membranes have been successfully grown on sol-gel surfaces, thanks to the well-established method for tuning the surface chemistry of ceramics in order to achieve optimized attachment and growth of MOFs on ceramic surfaces. 

The growth of MOF nanoparticles inside porous silica monolith is a promising approach for catalysis applications. Sachse et al. demonstrated the successful formation of HKUST-1 crystals inside silica monolith [79]. Macro/mesoporous silica monolith was synthesized using TEOS as a Si02 precursor and ammonia as a catalyst. For the subsequent MOF formation, the as formed monolith was immersed in HKUST-1 precursor solution using DMSO as a solvent. The employment of DMSO instead of classical solvents (ethanol and water mixture) for the synthesis of HKUST-1 crystals led to slower nucleation of smaller crystals in the mesopores of monolith rather than at the outer surface. 

Engineered Ceramics and Hybrid Materials for Controlled MOF Nucleation and Growth 

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Another advantage of Mossbauer spectroscopy that should benefit future research is that it can be used in a non-destructive way. This advantage should allow the investigation of membranes and monoliths without them being damaged, even... 

Examples of Commercially Available Membrane and Monolithic Products... 

Comparison among Conventionally Packed Beds, Membrane and Monoliths Used in Bioseparations... 

Troweled surfacing materials (monolithics) sometimes are used as membranes, where there may be a load on the surface beyond the capability of a membrane to support. In such cases, there may be adjacent areas of membrane and monolithic. If the system is to be continuous and void-free, the monolithic must be overlapped at all edges by the membrane, or the two surfaces continuously mated or flashed together. The inspector should examine this section very carefully for voids and discontinuities. In addition, he observes the following inspection procedure on the application ... 

Porous materials discussed at the International Conference on Materials for Advanced Technologies 2005 included clay minerals, silicates, aluminosilicates, organosilicas, metals, silicon, metal oxides, carbons and carbon nanotubes, polymers and coordination polymers, or metal-organic frameworks (MOFs), metal and metal oxide nanoparticles, thin films, membranes, and monoliths (Zhao, 2006). 

Chapter 6 Membrane and Monolithic Convective Chromatographic Supports.101... 

Polymerization reactions are often utilized for the production of microscale solid materials such as particles/beads, disks, rods, capsules, fibers, membranes and monoliths for various purposes. In the field of microreactions, preparation of a solid polymeric material was the first reported step polymerization using microfiuidic system [7]. In the past few years, the microfluidic system has provided various interesting solid materials through manipulation of microfluids [3]. There are many reports on radical polymerization and among the examples are styrene and acrylate polymerization. In this chapter, we introduce several techniques for the production of microstructures using polycondensation. 

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