نتایج جستجو برای: thermal decomposition

تعداد نتایج: 310314  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2000
abdolsamad zarrin ghalam moghaddam ali akbar hashemi pour rafsanjani

simultaneous thermal analysis (sta) method has been applied to study decomposition reactions of ap under a flowing nitrogen atmosphere and static air. results obtained indicate that a phase transformation occurs prior to the decomposition reaction. decomposition takes place exothermally in two stages, first stage of decomposition could be suppressed by the controlled heating programme. addition...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2011
hui wei liao lan mu min zhen yan yan meng

nano-cufe2o4 catalysts with different cu/fe molar ratios (cunfemo(n+1.5m)) were prepared by hydrothermal method. the thermal decomposition performance of cunfemo(n+1.5m) on cuso4 were determined with tg-dsc method to evaluate its catalytic activity and the roasted product was characterized by xrd. the results showed that cunfemo(n+1.5m) had superior catalytic properties and efficiency to cuso4 ...

Journal: :international journal of nano dimension 0
a. hosseinian department of engineering science, faculty of engineering, university of tehran,tehran, iran. a.r. mahjoub department of chemistry, tarbiat modares university,tehran ,iran m. movahedi department of chemistry, payame noor university, isfahan, iran.

a new tris-chelate cd(ii) complex, [cd(dadmbtz)3](clo3)2 has been successfully synthesized and characterized by ir, 1h, 13c nmr spectroscopy, elemental analysis and single crystal x-ray determination. the thermal behavior, uv-vis and fluorescence spectra of compound were studied. in reaction with dadmbtz, cadmium (ii) forms a tris-chelate complex with nearly c3 symmetry for coordination polyhed...

Journal: :journal of nanostructures 2012
a. dehno khalaji k. jafari s. maghsodlou rad

in this paper, cuo nanoparticles  have been synthesized via solid-state thermal decomposition using copper(ii) schiff base complexes as new precursors at 600ºc under air atmosphere for 3 h. surface morphology of the products were characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd) and scanning electron microscopy (sem).

ژورنال: مواد پرانرژی 2014
احمدوند, هادی, ایومن, اسماعیل, حسینی, سید قربان, قوی , اعظم ,

In this review, an attempt to collect summarized literature data on catalytic effect of nanosized metal oxides on the thermal decomposition of ammonium perchlorates is made. Several experimental results show nanometal oxides are more effective catalysts as compared to nanosized metals. Nanocatalysts decrease the activation energy and the increase the rate the thermal decomposition of ammonium p...

Journal: :international journal of nano dimension 0
a. a. dehno khalaji department of chemistry, faculty of science, golestan university, gorgan, iran. f. malekan department of chemistry, faculty of science, golestan university, gorgan, iran.

in this study, we synthesis one-dimensional (1d) manganese(iii) schiff base coordination polymer [mn(brsalophen)(μ1,3-n3)]n by reaction of mncl2·6h2o and tetradentate schiff base ligand brsalophen at the presence of nan3 in methanol and characterized by elemental analyses (chn) and ft-ir spectroscopy. it was used as a new precursor to prepare spinel type manganese oxide nanowires by a facile so...

Journal: :journal of nanostructures 2012
m. salavati-niasari s. alikhanzadeh-arani

as a new precursor, [tris(2-hydroxyacetophenato) triaqua(iii)], [y(hap)3(h2o)3]; complex was used in thermal decomposition process for the synthesis of rod-like high-temperature ceramic ybco with length of about 320-350 nm and diameters 60–90 nm. the as-synthesized products were characterized by xrd, ft-ir, tem, sem and edx analyses. the results showed that by using fine raw materials, the calc...

Journal: :international journal of nanoscience and nanotechnology 2015
e. ayoman g. hossini n. haghighi

in this research, cuo spherical-like nanoparticles were synthesized using the planetary ball mill method. the structure, particle size and morphology of the resulting cuo nanoparticles were characterized by xrd (x-ray diffraction), sem (scanning electron microscopy) and saxs (small-angle x-ray scattering) methods. the results of this investigation showed that the smallest particles which were o...

Journal: :journal of ultrafine grained and nanostructured materials 0
ibrahim sharifi nanotechnology and advance materials department, materials and energy research center (merc), p.o. box 31787-316, karaj, iran. ali zamanian nanotechnology and advance materials department, materials and energy research center (merc), p.o. box 31787-316, karaj, iran. aliasghar behnamghader nanotechnology and advance materials department, materials and energy research center (merc), p.o. box 31787-316, karaj, iran.

magnetic nanoparticles attracted a great deal of attention in the medical applications due to their unique properties. the most exceptional property of magnetic particles is their response to a magnetic force, and this property has been utilized in applications such as drug targeting, bioseparation, contrast agents in magnetic resonance imaging (mri) and heating mediators for cancer therapy. in...

Journal: :international journal of bio-inorganic hybrid nanomaterials 2015
a.a. dehno khalaji d. das j.s. matalobos f. gharib

in this paper, cubic nickel oxide nanoparticles were successfully prepared by solid-state thermal decomposition of nickel(ii) macrocyclic schiff-base complex at 450°c for 3 h without employing toxic solvent or surfactant and complicated equipment. nickel(ii) macrocyclic schiff-base complex was synthesized by the reaction of 1,2-bis(2-formyl-3-methoxyphenyl)propane, nicl2•6h2o and 1,3-phenylened...

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