ChemInform Abstract: Perspective in Molecular Sieve Science

Abstract

ChemInform Abstract (39 papers, 1048 refs.).

Zeolite-modified electrodes and electrode-modified zeolites

“…Since the zeolite provides a high (>1 M) concentration of solute, mass transport to the electrode will not be strictly described by linear diffusion as concentration gradients, migration, and thin-layer/edge effects can all be anticipated to play a role; Shaw and co-workers invoked these factors to explain the voltammetry obtained for methylviologen-exchanged Y. 33 Diffusion within zeolites is a much studied phenomenon (see ref 73 for some recent perspectives), with molecular mobility intimately related to the match between intracrystalline pore sizes, the dimensionality of the intracrystalline channel structure, and the size/shape of the solute. Shaw and co-workers explored this aspect for electrochemical situations by using electrolytes of varying cation size and the electroactive probes Ru(NH3)63+, methylviologen (MV2+), and Cu2+ sorbed into zeolite Y.33 In competitive adsorption of Ru(NH3)63+ and MV2+, Y was shown to preferentially concentrate Ru(NH3)63+; however, the magnitude of current for MV2+ was relatively greater, indicating greater mobility of MV2+ into/out of the zeolite.…”

Additive manufacturing for adsorption‐related applications—A review

“…Yet, the necessity of using additives, like binders, plasticizers, and solvents must be highlighted. The extrusion method was already utilized to prepare structured adsorbents, named extrudates, like activated carbons, [4,7,54,56] zeolites, [7,14,55,57,58] MOFs, [59][60][61][62] among others. In extrusion, a die is used to impose on the paste containing the active material and the additives the desired design for the structured adsorbent.…”

“…To shape adsorbent materials in the desired forms, there are already several techniques available: casting [16][17][18] ; templating [19] ; granulation [16][17][18][20][21][22][23][24][25] ; coating [6,[26][27][28][29][30][31][32][33][34][35][36][37] ; matrix incorporation [38] ; dry pressing [39][40][41][42][43][44][45][46][47][48][49] ; pulsed current processing [50][51][52] ; spray drying [53] ; extrusion [4,7,14,[54][55][56][57][58]…”

Nanocomposites Prepared by Threading Polymer Chains through Zeolites, Mesoporous Silica, or Silica Nanotubes

“…[63][64][65] Interest in zeolites in a wide variety of applications is evident from a very extensive literature, covering a considerable period of time. [66][67][68][69][70] The present review, however, focuses on some specific aspects of zeolites and related silica-based materials which also have wellcharacterized cavities or channels. These aspects are the morphology of zeolite/polymer nanocomposites and the nature of the reinforcement of the polymer provided by the inorganic phases.…”