نتایج جستجو برای: koh concentration 2
تعداد نتایج: 2791063 فیلتر نتایج به سال:
The regeneration of used oil is one the essential processes for economical, industrial and environmental targets. Used rich hydrocarbons, metals (such as: aluminium, chromium, copper, iron, lead, manganese, nickel, silicon tin), gasoline, water antifreeze. Due to high increasing rate number cars, there a huge quantity oil. In this study, different brands were involved in extraction adsorption a...
A rigorous study of electrodeposited pure and mixed Ni/Fe oxides was performed in three different sodium hydroxide electrolytes with various Fe impurity concentrations (<1 ppb, 5 ppb and 102 ppb). The presence and concentration of the Fe impurities in the three electrolytes is determined by Inductive Coupled Plasma spectroscopy. The rationale for investigating the OER performance of the pure an...
The chemiluminescence (CL) accompanying the oxidation of phenyl hydrazine with t-butylhydroperoxide in alkaline medium was studied in the presence and absence of luminol. The reaction occurring between phenyl hydrazine and alkaline (KOH) solution of aqueous tbutylhydroperoxide leads to the production of nitrogen gas with simultaneous emission of light (CL), which has been detected by PMT and re...
Simple one-pot methods for preparation of 2-oxazolines have been developed using 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMT-MM). Treatment of a mixture of carboxylic acids and 2-haloethylammonium salts with DMT-MM in methanol followed by refluxing in the presence of KOH gives oxazolines.
The increased growth of electronics and wireless communication systems causes the urge to find microwave absorbing materials that are lightweight, inexpensive, environmentally friendly. In this study, we successfully synthesize activated carbon from oil palm empty fruit bunch (OPEFB) as future material candidates with a porous structure using different kalium hydroxide (KOH) concentrations duri...
the aim of the present study was to determine the in?uence of presence or absence of corpus luteum (cl) on hormonal and metabolites composition of follicular ?uid (ff) harvested from different sized follicles and its relationship with blood serum concentrations in sanjabi ewes. ovaries and blood samples were collected from 60 clinically healthy adult ewes (sanjabi breed) 1–3 years of age in dio...
Recyclable ( -p-cymene)-ruthenium(II) 2-naphthylazo-p-methylphenolate catalyst of formulation [RuCl( -pcymene)(L)] (where L = mono anionic 2-naphthylazo-p-methylphenolate ligand) is shown to be an efficient catalyst for transfer hydrogenation of a wide range of alkyl and aryl ketones in the presence of 2-propanol and KOH.
A honeycomb-like porous carbon derived from pomelo peel for use in high-performance supercapacitors.
A cost-effective approach to obtain electrode materials with excellent electrochemical performance is critical to the development of supercapacitors (SCs). Here we report the preparation of a three-dimensional (3D) honeycomb-like porous carbon (HLPC) by the simple carbonization of pomelo peel followed by KOH activation. Structural characterization indicates that the as-prepared HLPC with a high...
Controlled micro/mesopores interconnected structures of three-dimensional (3D) carbon with high specific surface areas (SSA) are successfully prepared by carbonization and activation of biomass (raw rice brans) through KOH. The highest SSA of 2475 m(2) g(-1) with optimized pore volume of 1.21 cm(3) g(-1) (40% for mesopores) is achieved for KOH/RBC = 4 mass ratio, than others. The as-prepared 3D...
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