The case of a sorption process considered here involves a solid phase (sorbent) and a liquid phase (solvent, normally water) containing a dissolved species to be sorbed (sorbate, e.g. metal ions). Due to the higher ‘affinity’ of the sorbent for the sorbate species the latter is attracted into the solid and bound there by different mechanisms. This process takes place until an equilibrium is est...

Ion exchange resins have been used to help formulate pharmaceuticals since the late 1950's. During that time they have proved to be safe and effective excipients and are now used in many commercial formulations throughout the world. In this article we will look at some of the common problems faced by formulators and how using ion exchange resins may be able to solve them. Ion exchange resins ar...

2 3 Na two-dimensional nutation N M R was applied to N a t + *Zr 2 Si v P 3 _ v O, 2 with x = 0, 1, and 2. The nutat ion spectrum in each compound consists of two clearly separated peaks corresponding to the two crystallographically inequivalent sodium sites. In the compound with x = 2 the nuclear quadrupole coupling constants (e Qq/h) and the asymmetry parameters (rj) were by spectral simulati...

Ion exchange resins are used in several chemical decontamination or cleaning processes and in nuclear industries for removal of radionuclides.1–5 Nowadays, ion exchange resins are not only used for separation but also as catalysts. In the past decade, inorganic ion exchange materials have emerged as an increasingly important replacement or complement to conventional organic ion exchange resins....

salicylic acid-formaldehyde-m-cresol (sfm) terpolymer had been synthesized in dmf media by conventional method. the resulting resin had been characterized by ftir spectra, elemental and thermogravimetric analyses. the morphology of sfm resin had been studied by sem and optical photograph. various parameters like rate of equilibration, effect of ph on ion exchange capacity and effect of concentr...

Anisole, phenyl ether (Ph-O-Me, Figure 1) usually used as a starting material for various pharmaceutical/flavonoid products and as solvent in organic synthesis and physical studies [1]. It is used for the synthesis of raw material for drugs such as cyclofenil, in treating Raynaud’s phenomenon in people with scleroderma [2], and tramadol hydrochloride, that is used for the relief of moderate or ...

Microporous layers (MPLs) play a crucial role in improving water management proton exchange membrane fuel cells (PEMFCs). Highly tunable electrospun carbon fibers offer promising candidate for MPLs to facilitate two-phase and gas transport PEMFCs. In this work, we present PEMFC model investigate the mass characteristics with made of nano-/micro-fibers. Simulations were validated by reported exp...

Anisole is a straw-colored aromatic compound mainly used in making solvents, flavoring agents, perfumes, fuel additives, and the synthesis industries. Anisole, also known as methoxybenzene, synthesized from sodium phenoxide or phenol using various methylating agents. The use of dimethyl ether (DME) an alkylating agent seldom reported literature. Herein, we have anisole through O-alkylation proc...