نتایج جستجو برای: inorganic cation

تعداد نتایج: 128484  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2007
hossein faghihian mohammad hossein mousazadeh

the ability of natural clinoptilolite and its modified forms were studied for removal of pahs from n-paraffin. surfactant modified zeolite (smz) was obtained by modifying clinoptilolite with hexadecyltrimethylammonium ion. homoionic forms of zeolite were obtained by ion exchange process using inorganic salts of desirable cations (e.g. ag+, fe3+…). natural clinoptilolite and its cation exchanged...

Journal: :The journal of physical chemistry. B 2010
Mara G Freire Catarina M S S Neves Artur M S Silva Luís M N B F Santos Isabel M Marrucho Luís P N Rebelo Jindal K Shah Edward J Maginn João A P Coutinho

By employing (1)H NMR spectroscopy and molecular simulations, we provide an explanation for recent observations that the aqueous solubilities of ionic liquids exhibit salting-out to salting-in regimes upon addition of distinct inorganic salt ions. Using a typical ionic liquid [1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide], we observed the existence of preferential specific inte...

Journal: :Annals of botany 1994
S P Loss A D Robson G S Ritchie

Unlike many plants reported in the literature, lupins do not excrete OH(-) in amounts equivalent to the net excess of inorganic anion uptake over inorganic cation uptake. To investigate the mechanisms involved in the maintenance of charge balance, nutrient uptake and organic anion accumulation of lupins and peas supplied with a range of NO(3)(-) concentrations, were compared. Lupins absorbed le...

Journal: :Chemical communications 2004
Monica Livieri Fabrizio Mancin Umberto Tonellato Jik Chin

Zn(II) complexes bearing multiple auxiliary organic groups greatly accelerate the cleavage of a phosphate diester.

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده علوم پایه 1391

رشد و گسترش بسیاری از گیاهان به واسطه فعالیت هورمون های گیاهی تنظیم می شود. نتایج تجربی نشان دادند که هورمون تراپی با هورمون ga3 تاثیر معناداری بر روی توزیع مونوترپن ها در گیاهrubus caesius دارد. در حضور هورمون ga3 غلظتcineole و ? –cadinene کاهش و میزان ? –terpinoleneand longifoleneافزایش یافت. با بررسی مسیر بیوسنتزی مشخص شد که ? –terpinolene و cineoleاز حدواسط ? –terpinyl cation مشتق شده اند و...

Journal: :Materials advances 2021

An organic-inorganic hybrid double perovskite-type cage-like crystal, (MA)2KBiCl6 (MA = methylammonium Cation, 1), was synthesized. It undergoes structural phase transitions at 336/326 K (heating/cooling). Various-temperature single-crystal analysis reveal that...

Journal: :Zeitschrift für anorganische und allgemeine Chemie 2021

Abstract Organic cations influence the crystal packing and, less commonly, electronic structure of hybrid organic–inorganic materials. Two new compounds prepared from solution, (PEA)SbCl 6 and (PEA) 4 Sb 2 Cl 12 (PEA=phenylethylammonium), demonstrate how aromatic PEA cation modifies structures relative to inorganic antimony chlorides. In ethylammonium conformation results in a polar chiral stru...

Journal: :APL Materials 2021

To fully unlock the potential of metal halide perovskites (MHPs) for use in optoelectronic devices, a comprehensive understanding their electronic properties is strong demand but presently lacking. This photoelectron spectroscopy study reveals that thin films three important mixed-cation/mixed-halide MHPs behave like intrinsic semiconductors with very low defect concentration. The Fermi level p...

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