نتایج جستجو برای: Molecular adsorption

تعداد نتایج: 684621  

Journal: :iranian journal of mathematical chemistry 2014
saadi saaidpour

quantitative structure-property relationship (qspr) for estimating the adsorption of aliphatic alcohols onto activated carbon were developed using substructural molecular fragments (smf) method. the adsorption capacity of activated carbon (gr/100grc) for 150 aliphatic alcohols onto activated carbon (ac) is studied under equilibrium conditions. forward and backwards stepwise regression variable ...

In this work, three types of natural clays including kaolinite, montmorillonite, and illite with different molecular structures, as adsorbents, are selected for the removal of methylene blue dye, and their performance is investigated. Also the optimization and the analysis of the dye adsorption mechanism are performed using the response surface methodology, molecular modeling, and experimental ...

Journal: :journal of physical & theoretical chemistry 2008
masoud. giahi abdollah. falah shojaie farkhondeh. mirsfa moqadam

the discovery of mesoporous molecular sieves, mcm-41, which possesses a regular hexagonalarray of uniform pore openings, aroused a worldwide resurgence in this field. this is not onlybecause it has brought about a series of novel mesoporous materials with various compositionswhich may find applications in catalysis, adsorption, and guest-host chemistry, but also it hasopened a new avenue for cr...

Quantitative structure-property relationship (QSPR) for estimating the adsorption of aliphatic alcohols onto activated carbon were developed using substructural molecular fragments (SMF) method. The adsorption capacity of activated carbon (gr/100grC) for 150 aliphatic alcohols onto activated carbon (AC) is studied under equilibrium conditions. Forward and backwards stepwise regression variable ...

Journal: :نشریه دانشکده فنی 0
مهندس شهره فاطمی مهندس ایرج شعاعی

the molecular sieves are selective adsorbents. they can adsorb some kind of molecules that are different in size or shape from the others. in separation of n-paraffins from iso-paraffins and aromatics, sa molecular sieve is the suitable adsorbent, and can adsorb n-paraffins to separate them from other hydrocarbons. in this paper equilibrium isotherms of n-cs, n-c6 and n-c7 from an inert solvent...

Abdollah. Falah Shojaie Farkhondeh. Mirsfa Moqadam Masoud. Giahi

The discovery of mesoporous molecular sieves, MCM-41, which possesses a regular hexagonalarray of uniform pore openings, aroused a worldwide resurgence in this field. This is not onlybecause it has brought about a series of novel mesoporous materials with various compositionswhich may find applications in catalysis, adsorption, and guest-host chemistry, but also it hasopened a new avenue for cr...

Journal: :international journal of nano dimension 0
razieh habibpour department of chemical technologies, iranian research organization for science and technology, p.o. box 3353-5111, tehran, i. r. iran eslam kashi department of chemical technologies, iranian research organization for science and technology, p.o. box 3353-5111, tehran, i. r. iran raheleh vaziri department of chemistry, payame noor university, p. o. box 19395-3697, tehran , i. r. iran

first-principle calculations were carried out to investigate the adsorption of co over cun nanoclusters. the structural, spectroscopic and electronic properties like optimized geometries, homo (highest occupied molecular orbital) and lumo (lowest unoccupied molecular orbital) energy levels, binding energy, adsorption energy, vibrational frequency and density of states (doss) of the pure cun nan...

First-principle calculations were carried out to investigate the adsorption of CO over Cun nanoclusters. The structural, spectroscopic and electronic properties like optimized geometries, HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) energy levels, binding energy, adsorption energy, vibrational frequency and density of states (DOSs) of the p...

Journal: :journal of nanostructures 0
debarati dey 1 department of computer science & engineering, west bengal university of technology. bf-142, sector 1, salt lake city. kolkata –700 064. west bengal, india. pradipta roy dept. of computer sc. & engg, swami vivekananda institute of science & technology. dakshin gobindapur. p.s.: sonarpur. kolkata –700 145. west bengal, india debashis de dept. of computer science & engg, maulana abul kalam azad university of technology. bf-142, sector 1, salt lake city. kolkata –700 064. west bengal, india

this paper presents density functional theory and non-equilibrium green’s function based first principles calculations to explore the sensing property of adenine and thymine based hetero-junction chins for ammonia and phosphine gas molecules. this modeling and simulation technique plays an important and crucial role in the fast growing semiconductor based nanotechnology field. the hetero-juncti...

Journal: :Journal of physics. Condensed matter : an Institute of Physics journal 2014
Lingmei Kong Axel Enders Talat S Rahman Peter A Dowben

Current studies addressing the engineering of charge carrier concentration and the electronic band gap in epitaxial graphene using molecular adsorbates are reviewed. The focus here is on interactions between the graphene surface and the adsorbed molecules, including small gas molecules (H(2)O, H(2), O(2), CO, NO(2), NO, and NH(3)), aromatic, and non-aromatic molecules (F4-TCNQ, PTCDA, TPA, Na-N...

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