نتایج جستجو برای: quaternization

تعداد نتایج: 182  

2016

Quaternized palm kernel shell was successfully prepared by reacting with N-(3-chloro-2hydroxypropyl)trimethylammonium chloride in basic condition. Adsorption experiments of Reactive Red E (RRE) dye were carried out in single batch system studied at various initial concentration, contact time and pH at 25°C. It was found that at pH 4 quaternized palm kernel shell showed the highest dye removal p...

Journal: :Dalton transactions 2010
Irina L Odinets Elena V Sharova Oleg I Artyshin Konstantin A Lyssenko Yulia V Nelyubina Galina V Myasoedova Nadezhda P Molochnikova Elena A Zakharchenro

The general approach to a novel class of functionalized ionic liquids 4-6 bearing grafted diphenylcarbamoylmethylphosphine oxide complexing groups in the cation has been elaborated. The synthetic route comprises the preparation of the intermediate (diphenylphosphorylmethylcarbamoyl)propylimidazole 3, followed by sequential quaternization by alkyl halides (chlorides or bromides) and anionic exch...

Journal: :Dalton transactions 2009
Beatriz Rasines José Manuel Hernández-Ros Natividad de las Cuevas José Luis Copa-Patiño Juan Soliveri M Angeles Muñoz-Fernández Rafael Gómez F Javier de la Mata

A new family of amine- and ammonium-terminated carbosilane dendrimers of the type Gn-[Si(CH2)3N(Et)CH2CH2NMe2]x and Gn-{[Si(CH2)(3)N+R(Et)CH2CH2N+RMe2]x(X-)y} (where n = 1, 2 and 3; R = H, X = Cl; R = Me, X = I) respectively has been synthesized by hydrosilylation of N,N-dimethyl-N'-allyl-N'-ethyl-ethylenediamine, [(CH2=CH-CH2)(Et)N(CH2)2NMe2] with the corresponding hydride-terminated dendrimer...

Journal: :Catalysts 2022

Poly(ionic liquid)s nanofiber (PIL NF) membrane was derived from polyacrylonitrile by converting its cyano groups to imidazoline moieties via cyclization with ethylenediamine, followed quaternization 1-bromobutane. The novel PIL NF is further decorated photocatalyst phosphotungstic acid PW12 anion exchanging give PW-PIL. degradation rate of the supported towards methyl orange irradiated under v...

2005
William R. Heineman

New film materials for pertechnetate: A new film material comprised of quaternized poly(4vinylpyridine) cross-linked with 1,10-diiododecane has been developed for use in the spectroelectrochemical sensor. Films were prepared in a one-pot synthesis by stirring poly(4vinylpyridine), cross-linker and methyl iodide in 1-butanol for 1 h, after which the solution was spincoating onto ITO-glass. Film ...

ژورنال: مواد پرانرژی 2014

.Energetic ionic liquids compared to conventional high energy compounds, such as TNT, HMX and RDX has a low vapor pressure, high thermal stability and adjustable chemical and physical properties and high being liquid range. A new class of ionic salts that have a large number of nitrogen on their structure have distinctive characteristics such as high heat of formation and high viscosity, comp...

In this study, the synthesis, characterization and controlled release behavior of new Hollow Silica Nano particles (HSNPs) and Magnetic Silica Nano Particles (MSNPs) were studied. Magnetic Silica Nano particles (MSNPs), as drug delivery vehicles, were synthesized through the coating of Fe3O4 nano-crystals with silica layers. The HSNPs were obtained by removal of Fe3O4 templates with hydrochlori...

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