Colloidal zeolites and zeolite membranes

Kallus, S.; Condre, J.-M.; Hahn, Alexander; Golemme, Giovanni; Algieri, Catia; Dieudonné, P.; Timmins, P.; Ramsay, J.D.F.

doi:10.1039/b204171p

Cited by 26 publications

(16 citation statements)

References 22 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, porous nylon membranes modified with poly(acid) brushes for rapid protein purification via ion-exchange and metal-ion affinity interactions have been recently reported. [21] Nanoporous membranes have been prepared using alumina, [22] track-etched polycarbonate, [23] polymers, [24] zeolites, [25] soft lithographic techniques, [26] ion beam etching of silicon nitride and oxide, [27] and by embedding carbon nanotubes. [28] Our strategy is based on utilizing silica colloidal crystals as an ordered porous material that possesses high molecular flux and easily controllable nanopore size.…”

Section: Introductionmentioning

confidence: 99%

pH‐Responsive Nanoporous Silica Colloidal Membranes

Schepelina

Poth

Zharov

2010

Adv Funct Materials

View full text Add to dashboard Cite

Free‐standing colloidal membranes (nanofrits) with varied thickness and nanopore size are fabricated and modified with pH‐responsive poly(2‐(dimethylamino)ethyl methacrylate) brushes. The polymer‐modified nanofrits demonstrate excellent gating behavior for molecular diffusion: in the presence of acid, the diffusion rate of positively charged species significantly decreases. Increasing the polymer length and membrane thickness and decreasing the nanopore size leads to the complete acid‐controlled gating of the membranes.

show abstract

Section: Introductionmentioning

confidence: 99%

pH‐Responsive Nanoporous Silica Colloidal Membranes

Schepelina

Poth

Zharov

2010

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…However, early zeolite membranes suffered from low permeance (low water flux) due to thick zeolite layers, low water selectivity due to grain boundary/intercrystalline defects, and high cost to manufacture due to the many steps involved in the formation of a zeolite membrane. These issues have been resolved through the deposition of a uniform layer of zeolite seed crystals onto the porous support followed by hydrothermal secondary crystal growth treatment that yields a thinner defect‐free zeolite layer . Grain boundary defects that cannot be eliminated through seeding/secondary growth may be addressed via post‐crystallization treatment(s) .…”

Section: Inorganic Materialsmentioning

confidence: 99%

“…These issues have been resolved through the deposition of a uniform layer of zeolite seed crystals onto the porous support followed by hydrothermal secondary crystal growth treatment that yields a thinner defect-free zeolite layer. 199,208,212 Grain boundary defects that cannot be eliminated through seeding/secondary growth may be addressed via post-crystallization treatment(s). 208,213,214 The majority of zeolite membranes are in single-channel tube form, although multichannel tubes and monoliths, as well as hollow fibers, are emerging.…”

Section: Linde Type a (Lta) Zeolitesmentioning

confidence: 99%

Review: membrane materials for the removal of water from industrial solvents by pervaporation and vapor permeation

Vane

2018

J of Chemical Tech & Biotech

108

View full text Add to dashboard Cite

Organic solvents are widely used in a variety of industrial sectors. Reclaiming and reusing the solvents may be the most economically and environmentally beneficial option for managing spent solvents. Purifying the solvents to meet reuse specifications can be challenging. For hydrophilic solvents, water must be removed prior to reuse, yet many hydrophilic solvents form hard‐to‐separate azeotropic mixtures with water. Such mixtures make separation processes energy‐intensive and cause economic challenges. The membrane processes pervaporation (PV) and vapor permeation (VP) can be less energy‐intensive than distillation‐based processes and have proven to be very effective in removing water from azeotropic mixtures. In PV/VP, separation is based on the solution–diffusion interaction between the dense permselective layer of the membrane and the solvent/water mixture. This review provides a state‐of‐the‐science analysis of materials used as the selective layer(s) of PV/VP membranes in removing water from organic solvents. A variety of membrane materials, such as polymeric, inorganic, mixed matrix, and hybrid, have been reported in the literature. A small subset of these is commercially available and highlighted here: poly (vinyl alcohol), polyimides, amorphous perfluoro polymers, NaA zeolites, chabazite zeolites, T‐type zeolites, and hybrid silicas. The typical performance characteristics and operating limits of these membranes are discussed. Solvents targeted by the United States Environmental Protection Agency for reclamation are emphasized and ten common solvents are chosen for analysis: acetonitrile, 1‐butanol, N,N‐dimethyl formamide, ethanol, methanol, methyl isobutyl ketone, methyl tert‐butyl ether, tetrahydrofuran, acetone, and 2‐propanol. Published 2018. This article is a U.S. Government work and is in the public domain in the USA.

show abstract

“…[333] Microporous nanoparticle films are of particular interest for photonics and catalysis. [334] Nanoporous membranes [335][336][337][338][339] are also capable of selectively separating molecules, [340][341][342] for filter and dialysis applications, [343] chemical reactivity within the pores and host-guest effects (e. g., in zeolitic membranes), control separation (e. g., for gases [344] or liquids [345] ), and heterogeneous catalysis. [346,347] Hierarchically ordered functional nanoporous membranes can also be utilized for heterogeneous photocatalytic reactions and monomeric devices to perform the function of molecular sieving effect.…”

Section: Applicationsmentioning

confidence: 99%

Self‐Assembly of Nanoparticles in 2D and 3D: Recent Advances and Future Trends

Ghosh

Böker

2019

Macro Chemistry & Physics

View full text Add to dashboard Cite

For more than a century, it has been known that emulsions consisting of two immiscible liquids can be rendered from coalescence by means of solid particles, coined as Pickering emulsions. Based on this discovery, novel materials as a result of the formation of 2D and 3D assemblies of nanostructures at liquid–liquid interfaces have been synthesized. These materials have received considerable attention due to several unique attributes of the nanoscale materials within these assemblies and their utilization in a wide arena of niche applications. With the progressive advent of the synthetic strategies of the nanostructures, these assemblies can be engendered to create membranes and capsules with high mechanical strength and desirable porosity and even can be made stimuli‐responsive. The nanostructures, ranging from inorganic particles to proteins to polymeric architectures, possess their stabilizing effects due to excess attachment energies and lead to the maneuvering of exciting structural design, such as colloidosomes and yeastosomes. The ability of the different kind of particles at the nanoscale dimension to self‐assemble at the liquid–liquid interface into ordered superstructures has substantial potential toward the design of exotic electronic, catalytic, optical, magnetic, and biomimetic materials.

show abstract

Colloidal zeolites and zeolite membranes

Cited by 26 publications

References 22 publications

pH‐Responsive Nanoporous Silica Colloidal Membranes

pH‐Responsive Nanoporous Silica Colloidal Membranes

Review: membrane materials for the removal of water from industrial solvents by pervaporation and vapor permeation

Self‐Assembly of Nanoparticles in 2D and 3D: Recent Advances and Future Trends

Contact Info

Product

Resources

About