Browsing Τμήμα Χημείας / Department of Chemistry by Title
Now showing items 346-365 of 1299
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Article
The effect of aging and natural organic matter on the Th(OH)4 solubility
(2014)The solution chemistry of actinides, particularly hydrolysis, is of major importance in the design of nuclear waste repositories and in relation to nuclear fuel reprocessing cycles. In this study the formation and solubility ...
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Article
Effect of angle strain in conjugated cycloaikenylidenes. Singlet- triplet splitting of cyclobutenylidene and its ground-state intramolecular rearrangements
(1999)The singlet and triplet states of cyclobutenylidene, cyclopenten-3- ylidene, cyclohexen,3-ylidene, and cyclohepten-3-ylidene and some of their isomers (cyclohexen-4-ylidene, cyclohepten-4-ylidene, and cyclohepten-5- ylidene) ...
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Article
Effect of ball milling on the carbon sequestration efficiency of serpentinized peridotites
(2018)Mineral carbonation has been suggested as a safe carbon capture and storage (CCS) strategy for the mitigation of climate change. This study investigates the effect of ball milling on the CO2 sequestration capacity of ...
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Article
Effect of Block Size and Sequence on the Micellization of ABC Triblock Methacrylic Polyampholytes
(1995)Fluorescence spectroscopy and static and dynamic light scattering were employed to probe the effect of block size and sequence on the micellization properties of a series of water-soluble, lowpolydispersity, low-molecular-weight, ...
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Article
The effect of calcination temperature on the oxygen storage and release properties of CeO2 and Ce-Zr-O metal oxides modified by phosphorus incorporation
(2005)The present work reports on the effects of calcination temperature (T c) on the oxygen storage and release properties of CeO2 and Ce0.8Zr0.2O2 solids deliberately contaminated with CePO4. Pulsed-feed and stepped-feed dynamic ...
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Article
The Effect of CeO2 Preparation Method on the Carbon Pathways in the Dry Reforming of Methane on Ni/CeO2 Studied by Transient Techniques
(2019)The present work discusses the effect of CeO2 synthesis method (thermal decomposition (TD), precipitation (PT), hydrothermal (HT), and sol-gel (SG)) on the carbon pathways of dry reforming of methane with carbon dioxide ...
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Article
The effect of Fe on the catalytic behavior of model Pd-Rh/CeO2-Al2O3 three-way catalyst
(2007)The present work attempts to address the issue whether iron (Fe) which is accumulated on the surface of "three-way" catalysts (TWCs) used in gasoline-driven cars is a true chemical poison of their catalytic activity. This ...
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Article
Effect of fluoro substitution on the packing motifs of benzylidene- and dibenzylidene-cyclopentanones
(1991)The structure and solid-state reactivity of one fluorinated benzyl(benzylidene)cyclopentanone and two fluorinated dibenzylidenecyclopentanones are reported and the influence of fluoro substitution upon the packing of ...
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Article
Effect of halogen substitution on o-Phenylenebiscarbene
(2005)The effect of halogen (F, Cl and Br) perturbation on the geometries and relative energies of five electronic states (one quintet, two triplets and two singlets) of o-phenylenebiscarbene (1-H) is examined computationally ...
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Article
Effect of halogen substitution on p-phenylenebiscarbene
(2005)The effect of halogen (F, Cl, and Br) perturbation on the geometries and relative energies of five electronic states (one quintet, two triplets, and two singlets) of p-phenylenebiscarbene (1-H) was examined computationally ...
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Article
The effect of humic acid on the formation and solubility of secondary solid phases (Nd(OH)CO3 and Sm(OH)CO3)
(2011)The formation of secondary Ln(III) solid phases (e.g. Nd(OH)CO3 and Sm(OH)CO3) has been studied as a function of the humic acid (HA) concentration in 0.1M NaClO4 aqueous solution and their solubility has been investigated ...
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Article
Effect of humic acid on the solid phase stability and solubility of UO 2(OH)2
(2009)The stability and solubility of UO2(OH)2 has been studied as a function of the humic acid concentration in 0.1M NaClO4, in the pH range from 4 to 7 under normal atmospheric conditions. The solid phase under investigation ...
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Article
Effect of humic acid on the solid phase stability of UO2CO 3
(2009)The stability of UO2CO3 has been studied as a function of the humic acid concentration in 0.1M NaClO4, in the weak acidic pH range (4.5-5) under CO2 atmosphere. The solid phase under investigation has been prepared by ...
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Article
The effect of La3+, Ti4+ and Zr4+ dopants on the mechanism of WGS on ceria-doped supported Pt catalysts
(2014)Platinum nanoparticles supported on single CeO2 and TiO 2 metal oxides and Ce0.8Ti0.2O 2-δ solid solution were prepared to investigate the effect of Ti4+-doping of ceria on important mechanistic and kinetic aspects of the ...
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Article
The effect of La3+-doping of CeO2 support on the water-gas shift reaction mechanism and kinetics over Pt/Ce1-xLaxO2-δ
(2013)Platinum nanoparticles (dPt=1.0-1.2nm) supported on single CeO2 and La2O3 metal oxides and Ce0.8La0.2O2-δ solid solution were prepared to investigate for the first time the effect of La3+-doping of ceria on important ...
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Conference Object
Effect of molecular weight on the vibronic structure of a diketopyrrolopyrrole polymer
(SPIE, 2016)Resonance Raman Spectroscopy (RRS) is employed in this study to examine the influence of molecular weight on the optical response of a diketopyrrolopyrrole polymer (DPP-TT-T) in solution. The vibronic structure observed ...
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Article
The effect of natural organic matter on the formation and solubility of M(OH)4 solid phases
(2014)In this study the formation of M(OH)4 solid phases (e.g. Th(IV), Ce(IV) and Zr(IV)) has been investigated as a function of the natural organic matter (NOM) concentration in 0.1 M NaClO4, in the pH range between 2 and 5, ...
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Article
The effect of physicochemical parameters on the separation recovery of plutonium and uranium from aqueous solutions by cation exchange
(2010)The effect of physicochemical parameters such as pH, salinity (e.g. [NaCl]) and competitive cation (e.g. Ca 2+ and Fe 3+) concentration on the separation recovery of plutonium and uranium from aqueous solutions by cation ...
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Article
Effect of pigment dispersion on optical properties and durability of a TiO2 pigmented epoxy coating
(2009)The effect of pigment dispersion on (i) surface morphology and appearance, and (ii) the weathering durability of a TiO2 pigmented epoxy coating was investigated. The microstructure and dispersion of pigmented epoxy coatings ...
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Article
The effect of preparation route of commercial Co/γ-Al2O3 catalyst on important Fischer-Tropsch kinetic parameters studied by SSITKA and CO-DRIFTS transient hydrogenation techniques
(2019)Two commercial Co-based catalysts supported on carbon-coated and uncoated γ-Al2O3 (during Co deposition) of different Co particle size (∼7 and 10 nm) and surface structure were investigated to address the effect of preparation ...