Poisoning of the Cathodic Hydrogen Evolution Reaction by Sulfur Chemisorbed on Platinum (110)
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Small-angle scattering from colloidal dispersions
Colloidal dispersions have structure on length scales from 10 to 1000 Å. Both inter- and intraparticle scattering contribute to the measured small-angle scattering spectra. Here are reviewed methods of quantitatively analyzing scattering from interacting polydisperse colloidal suspensions. The concept of a colloidal m…
Heme model studies related to cytochrome P-450 reactions: preparation of iron porphyrin complexes with carbenes bearing a .beta.-oxygen atom and their transformation into iron-N-alkylporphyrins and iron-metallacyclic complexes
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTHeme model studies related to cytochrome P-450 reactions: preparation of iron porphyrin complexes with carbenes bearing a .beta.-oxygen atom and their transformation into iron-N-alkylporphyrins and iron-metallacyclic complexesIsabelle. Artaud, Nathalie. Gregoire, Jean Paul.…
81Br NQR and 119Sn Mössbauer Study for MSnBr3 (M=Cs and CH3NH3)
Abstract Successive phase transitions were observed for CsSnBr3 and CH3NH3SnBr3 by means of 81Br NQR and DTA. These compounds are isomorphous with each other and have typical cubic perovskite structures at room temperature. However, with decreasing temperature both compounds showed successive phase transitions and com…
Synthesis and chemistry of a dinuclear iridium bis-.mu.-oxo complex. Observation of oxygen transfer and phosphorus-carbon bond cleavage
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis and chemistry of a dinuclear iridium bis-.mu.-oxo complex. Observation of oxygen transfer and phosphorus-carbon bond cleavageWilliam D. McGhee, Thomas. Foo, Frederick J. Hollander, and Robert G. BergmanCite this: J. Am. Chem. Soc. 1988, 110, 25, 8543–8545Publicatio…
Use of wood fibers in thermoplastic composites: VI. Isocyanate as a bonding agent for polyethylene–wood fiber composites
Abstract Linear low density (LLDPE) and high density (HDPE) polyethylenes were reinforced with wood fibers of aspen chemithermomechanical (CTMP) pulp. The different isocyantes: (i) polymethylene (polyphenyl isocyanate), (ii) tolene –2–4‐diisocyanate, (iii) 1–6 hexamethylene‐diisocyanate, and (iv) ethyl isocyanate used…
Spectroscopic and electrical properties of VO(dmit)2 and V(dmit)3 anion complexes and x-ray crystal structure of [NMP]2[V(dmit)3] (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate, NMP = N-methylphenazinium)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSpectroscopic and electrical properties of VO(dmit)2 and V(dmit)3 anion complexes and x-ray crystal structure of [NMP]2[V(dmit)3] (dmit = 2-thioxo-1,3-dithiole-4,5-dithiolate, NMP = N-methylphenazinium)Genetsu Matsubayashi, Kazuki Akiba, and Toshio TanakaCite this: Inorg. Ch…
Sorption and diffusion of alcohols in heteropoly oxometalates and ZSM-5 zeolite
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSorption and diffusion of alcohols in heteropoly oxometalates and ZSM-5 zeoliteV. S. Nayak and J. B. MoffatCite this: J. Phys. Chem. 1988, 92, 25, 7097–7102Publication Date (Print):December 1, 1988Publication History Published online1 May 2002Published inissue 1 December 198…
Electron donor-acceptor properties of porphyrins, phthalocyanines, and related ring chelates: a molecular orbital approach
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectron donor-acceptor properties of porphyrins, phthalocyanines, and related ring chelates: a molecular orbital approachC. Fierro, A. B. Anderson, and D. A. SchersonCite this: J. Phys. Chem. 1988, 92, 24, 6902–6907Publication Date (Print):December 1, 1988Publication Histor…
Memory effects in polymers. III. Processing history vs. crystallization rate of nylon 6—comments on the origin of memory effect
Abstract Our previous publication on this subject has dealt with the processing history effects on the crystallization rate of nylon 6 from the molten state. In this manuscript we present some insights into the molecular origin of the observed effects. Based on the available experimental data, we hypothesize that melt…
Kinetics of the thermal dehydration of potassium copper(II) chloride dihydrate
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTKinetics of the thermal dehydration of potassium copper(II) chloride dihydrateHaruhiko Tanaka and Nobuyoshi KogaCite this: J. Phys. Chem. 1988, 92, 24, 7023–7029Publication Date (Print):December 1, 1988Publication History Published online1 May 2002Published inissue 1 Decembe…
Formation of highly oriented graphite from poly(acrylonitrile) prepared between the lamellae of montmorillonite
ADVERTISEMENT RETURN TO ISSUEPREVArticleFormation of highly oriented graphite from poly(acrylonitrile) prepared between the lamellae of montmorilloniteNaohiro Sonobe, Takashi Kyotani, Yoshihiro Hishiyama, Minoru Shiraishi, and Akira TomitaCite this: J. Phys. Chem. 1988, 92, 24, 7029–7034Publication Date (Print):Decemb…
The Synthesis and Liquid Crystal Properties of Some 2,5-Disubstituted Pyridines
The synthesis is reported of fifteen three-ring 2,5-disubstituted pyridines and two pyridine-N-oxides where the pyridine rings carry a variety of alkyl, aryl, cyclohexyl, cyclohexylethyl and fluorinated-aryl substituents. The mesomorphic transition temperatures for these compounds have been measured; all the compounds…
Theory of dynamics of entangled rod-like polymers by use of a mean-field Green function formulation. I. Transverse diffusion
A mean-field Green function theory is developed for investigating the dynamics of entangled rod-like polymers in solutions. We regard the hindrance of surrounding rods as a multiple (sequential) perturbation to the free transverse or lateral diffusion of a test rod (a rod in consideration) and incorporate the effects…
The atomic and electronic structure of metallic glasses: search for a structure-induced minimum in the density of states
The atomic and electronic structures of amorphous and crystalline Mg-Zn alloys are studied by computer simulation, electronic band-structure calculations and photoemission measurements. The spectra for the metallic glasses and for pure crystalline zinc show a narrow band of Zn 3d states centred at a binding energy E B…
The surface analysis of a plasma modified contact lens surface by SSIMS
Abstract The oxygen glow discharge plasma modification of a contact lens material has been studied using SSIMS. SSIMS provides evidence at the molecular level for the conversion of surface organosiloxane species to inorganic silica functionalities with treatment time. These findings shown an excellent correlation with…
Analytical Electron Microscope Analysis of the Formation of BaO · 6Al 2 O 3
The formation process of barium hexaaluminate (BaO 6Al 2 O 3 ) from BaCO 3 /γ‐Al 2 O 3 powders or hydrolyzed alkoxides was studied by analytical electron microscopy. Barium hexaaluminate is produced by a two‐step solid‐state reaction from BaCO 3 and Al 2 O 3 via formation of BaO·Al 2 O 3 . Marked grain growth and incl…
Effects of dry grinding on pyrophyllite
Abstract Dry grinding of pyrophyllite (Hillsboro, USA) has been studied by X-ray diffraction (XRD), specific surface area measurements (BET) and scanning electron microscopy (SEM). At the beginning of the grinding process, some effects such as delamination, gliding and folding of the layers, and decrease in particle s…
Acoustical absorption and scattering cross sections of spherical bubble clouds
The present work investigates the acoustical absorption and scattering cross sections of spherical bubble clouds subject to harmonic farfield pressure excitation. Bubble dynamics effects and energy dissipation due to viscosity, heat transfer, liquid compressibility, and relative motion of the two phases are included.…
Analytical Electron Microscopy and the Problem of Potassium Diffusion
Abstract Diffusion of K during analytical electron microscopy (AEM) results in anomalously low count rates for this element. As the analysis area and specimen thickness decrease, count rates become disproportionally lower. Adularia and muscovite show different diffusion profiles during AEM; for muscovite a strong depe…