نتایج جستجو برای: acidic ionic liquid

تعداد نتایج: 284652  

Razieh Zakerian Soleiman Bahar,

In this study, we combined Ionic Liquid-based Dispersive Liquid Liquid Micro Extraction (IL-DLLME) with FAAS for determining the palladium in different real samples at the trace level. 1-hexyl-3-methylimidazolium hexafluorophosphate [Hmim][PF6] ionic liquid and 1-(2-pyridylazo) 2-naphthol (PAN), were chosen as the extraction solvent and the chelating agent, respectively. The hydr...

Journal: :iranian journal of catalysis 2016
bijan mombeni goodajdar soghra soleimani

an atom-efficient, eco-friendly, solvent-free, high yielding, multicomponent green strategy to synthesize triazolo[1,2-a]indazole-triones derivatives by the one-pot condensation of aldehyde, dimedone, and phenyl urazole is presented. a series of different substituted aromatic aldehydes including either electron-withdrawing or electron-donating groups used in this reaction participated well and ...

Journal: :international journal of nanoscience and nanotechnology 2015
a. s. shahvelayati m. sabbaghan s. e. bashtani

zno nanostructures have been synthesized by a simple reflux method, using different ionic liquids, such as 1-benzyl-3-methylimidazolium bromide ([bzmim][br]), 1,1'-(1,4 phenylenebis (methylene)) bis (3-methyl-1h-imidazol-3-ium) bromide ([mm-1,4-dbzim2][br]2) and 1-phenacyl-3-methylimidazolium bromide ([pmim][br]), with different amount of sodium hydroxide in water. also the effect of reaction t...

Journal: :international journal of nanoscience and nanotechnology 2011
v. taghvaei a. habibi-yangjeh m. behboudnia

simple, low temperature and environmentally benign green route is proposed for preparation of nanocrystalline zno in presence of a low-cost and halide-free room-temperature ionic liquid (rtil) by refluxing at 95 °c for 60 minutes. the x-ray diffraction (xrd) studies display that the products are well-crystallized in the form of wurtzite hexagonal. morphology of the as-prepared zno was character...

Journal: :international journal of nanoscience and nanotechnology 2010
m. movahedi , a. r. mahjoub i. yavari e. kowsari

in this paper, synthesis of the flower-like zinc oxide was performed using microwave assisted dicationic ionic liquid [mmp(im)2 ]br2 . the polycrystalline flower-like zinc oxide nanostructure was obtained when a suitable mole ratio (ionic liquid /zinc acetate) and short duration microwave was used. x-ray diffraction (xrd), scanning electron microscopy (sem), and photoluminescence (pl) spectra w...

Journal: :علوم و تکنولوژی پلیمر 0
علی عبدالخانی سید احمد میرشکرایی یحیی همزه سحاب حجازی آرزو نوری

residual lignin of wood after mwl isolation was dissolved with 1-butyl-3-methylimidazolium chloride ionic liquid. chemical structure of isolated mwl from poplar wood (popolus deltiodes) and dissolved residual lignin were characterized with gas chromatography and 1d, 2d nmr techniques. analytical results showed that  popolus deltoides wood has more 4-(3-hydroxy-1-propenyl)-2-methoxy phenol units...

2017
Yuichiro Hirota Yohei Maeda Yusuke Yamamoto Manabu Miyamoto Norikazu Nishiyama

In this study, we present a new concept in chemically stabilized ionic liquid membranes: an ionic liquid organosilica (ILOS) membrane, which is an organosilica membrane with ionic liquid-like properties. A silylated ionic liquid was used as a precursor for synthesis. The permselectivity, permeation mechanism, and stability of the membrane in the H₂/toluene binary system were then compared with ...

Journal: :iranian journal of catalysis 2013
bijan mombani godajdar ali reza kiasat

regarding the green chemistry's goals, dicationic magnetic room temperature ionic liquid open up new avenue to introduce an amazing and efficient system for facilitating catalyst recovery in different organic reactions. ability of this dicationic magnetic room temperature ionic liquid catalyst in the one-pot three-components condensation reaction of benzil, aromatic aldehyde, and ammonium aceta...

Journal: :journal of particle science & technology 2015
mohammad kaikhosravi hassan hadadzadeh mohammad-taghi behnamfar

an anionic fe(ii) complex, (bmim)4[fe(cn)6] (where bmim is 1-butyl-3-methylimidazolium), was synthesized in ionic liquid [bmim][pf6] under reflux condition. the complex was characterized by elemental analysis and spectroscopic methods. the magnetite (fe3o4) nanoparticles were prepared by the hydrothermal and solvothermal (in ionic liquid [bmim][pf6]) methods from (bmim)4[fe(cn)6] as a precursor...

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