نتایج جستجو برای: catalysis

تعداد نتایج: 26600  

Vahid Khakyzadeh was born in Hamedan, Iran. He received his B.S. degree (Pure Chemistry) and M.S. degree (Organic Chemistry) from Bu-Ali Sina University, Hamedan, Iran, at 2008, 2010 respectively under supervision of professor Mohammad Ali Zolfigol. He is currently working on his Ph. D. under the supervision of professor Mohammad Ali Zolfigol in organic chemistry. Among his recent awards, Vahid...

Kurosh Rad-Moghadam Shaghayegh Gholizadeh

An efficient and convenient protocol for synthesis of 3-hydroxy-3-indolyl-2-oxindoles and 3,3-diindolyl-2-oxindoles is presented here. The syntheses were achieved selectively under catalysis of LiClO4 whereby the products were obtained purely.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم پایه دامغان - دانشکده علوم پایه دامغان 1394

در بین انواع نانوذره ها، نانوذره های مغناطیسی (mnps) نظر به کاربرد های بسیاری که در حوزه های مختلفی همچون مایعات مغناطیس (magnetic fluids) کاتالیز (catalysis) ، تصویربرداری رزونانس مغناطیسmagnetic resonance imaging) ) و بازسازی محیط زیست (environmental remediation) دارند توجه پژوهشگران را به خود جلب نموده اند [1]. این نانوذره ها سوپرپارامغناطیس هایی اند که می توانند جذب میدان مغاطیسی شوند اما خ...

Journal: :journal of the iranian chemical research 0
mohammad taghi taghizadeh department of physical chemistry, faculty of chemistry, university of tabriz, tabriz, iran parinaz seifi-aghjekohal department of physical chemistry, faculty of chemistry, university of tabriz, tabriz, iran ali bahadori, department of physical chemistry, faculty of chemistry, university of tabriz, tabriz, iran banafsheh zeraatkar department of physical chemistry, faculty of chemistry, university of tabriz, tabriz, iran

the thermal degradation of polyethylene (pe) was carried out in the absence and presence ofcatalystes x-zeolite and silica-alumina at different temperatures. the optimum pe/catalysisratio was 0.25:0.05 g/g, which produced highest degradation value. pe and pe/catalysis werecharacterized by thermogravimetric analysis. the thermal degradation properties of polymerhave been studied by infrared spec...

Journal: :iranian journal of catalysis 2013
hamid aliyan razieh fazaeli nafiseh tajsaeed

a new type of magnetically-recoverable catalyst was synthesized by the immobilization of h3pw12o40 on the surface of silica-encapsulated -fe2o3 nanoparticles. a series of novel 1,3,5-triaryl pyrazoline derivatives has been synthesized by the reaction of chalcone and phenylhydrazine in the presence of the -fe2o3@sio2-pw12nanoparticles,  in high yields. the structures of compounds obtained were...

Journal: :international journal of nano dimension 0
n. v. suramwar nanotechnology lab, department of chemistry, science college, congress nagar, nagpur, maharashtra, 440012, india. s. r. thakare nanotechnology lab, department of chemistry, science college, congress nagar, nagpur, maharashtra, 440012, india. n. t. khaty department of applied chemistry, priyadarshini college of engg. & tech., hingna, nagpur, maharashtra 440019, india.

well faceted cuo nanoparticles, were synthesized by thermal-assisted dissociation method at reflux temperature in a short period of time. a possible mechanism for synthesis of such highly pure and stable nanoparticles is tentatively proposed by ft-ir study. the large surface area and rich exposed active sites are expected to endow such nanoparticles with excellent performances in catalysis as d...

2016
Sukbok Chang Paolo Fornasiero

Subdisciplines: Biocatalysis and Enzymology, Molecular Catalysis for Organic Synthesis, and Heterogeneous Photocatalysis A a comprehensive catalysis journal, jointly “owned” by the vast array of researchers studying molecules and materials that catalyze reactions, the scope of ACS Catalysis is understandably quite broad. In this regard, the editorial team has stated that the journal seeks the t...

Kurosh Rad-Moghadam Shaghayegh Gholizadeh

An efficient and convenient protocol for synthesis of 3-hydroxy-3-indolyl-2-oxindoles and 3,3-diindolyl-2-oxindoles is presented here. The syntheses were achieved selectively under catalysis of LiClO4 whereby the products were obtained purely.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1996
habib firouzabadi zohreh khayat ali reza sardarian shahram tangestaninejad

metalloporphirins; cu(tpp), mn(tpp)cl, co(tpp), fe(tpp)cl, zn(tpp) and mn(obp)cl catalyze region and chemoselective silylation of hydroxyl groups with hmds. fe(tpp)cl is the most effective catalyst and silylation occurs immediately in its presence at room temperature.

Journal: :journal of petroleum science and technology 2015
hamid reza bozorgzadeh

the direct conversion of methane to c2 hydrocarbons, in a quartz tube reactor enforced by a dc corona discharge, was investigated at atmospheric pressure. the process was carried out in the presence of metal oxide catalysts of mn/w/sio2, mn/w/sio2 (tetraethyl orthosilicate, teos), and mn/w/cnt (supported on carbon nanotubes). the total yield to c2 hydrocarbons in the presence of metal oxide cat...

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