Manual on catalyst characterization (Recommendations 1991)
Abstract
Materials Literature
文献浏览
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Chiral polytungstometalates [WM 3 (H 2 O) 2 (XW 9 O 34 ) 2 ] 12– (X = M = Zn or Co II ) and their M-substituted derivatives. Syntheses, chemical, structural and spectroscopic study of some D , L sodium and potassium salts
Heteropolyanions [WM3(H2O)2(XW9O34)2]12–(X = M = Zn or CoII) form on ageing concentrated solutions of sodium salts of the well known polyanions [Zn(H2O)(ZnW11O39)]8– and [CoII(H2O)(CoIIW11O39)]8–. Their high-yield syntheses are reported. An X-ray crystallographic study of Na12[WZn3(H2O)2(ZnW9O34)2]·46H2O [Space group…
Thermoplastic composite materials
1. Introduction (F.N. Cogswell). The keys to thermoplastic composites. Envoi. Bibliography. 2. Physical and mechanical properties of high-performance thermoplastic polymers and their composites (N.J. Johnston, T.W. Towell, P.M. Hergenrother). General features of thermoplastic matrices. Neat resins and properties. Comp…
Narrow band gap polymers: polycyclopenta[2,1-b;3,4-b′]dithiophen-4-one
An electroactive polymer with a lowered band gap has been obtained from the monomer cyclopenta[2,1-b;3,4-b′]dithiophen-4-one.
Narrow bandgap polymers: poly-4-dicyanomethylene-4H-cyclopenta[2,1-b;3,4-b′]dithiophene (PCDM)
An electroactive polymer with a bandgap of ≈0.8 eV has been obtained from the monomer 4-dicyanomethylene-4H-cyclopenta[2,1-b;3,4-b′]dithiophene.
Diffusion in Titanium.
Recent studies of self-diffusion and impurity diffusion in α- and β-titanium are reviewed. The transition metal elements and phosphorus exhibit fast diffusion in α-Ti, which are three to five orders of magnitude faster than the self-diffusion. The mechanism of the fast diffusion is discussed on the basis of the severa…
Layered structure of crystalline compounds silver thiolates (AgSR)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLayered structure of crystalline compounds silver thiolates (AgSR)Ian G. Dance, Keith J. Fisher, R. M. Herath Banda, and Marcia L. ScudderCite this: Inorg. Chem. 1991, 30, 2, 183–187Publication Date (Print):January 1, 1991Publication History Published online1 May 2002Publish…
Formation of quantum-size semiconductor particles in a layered metal phosphonate host lattice
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFormation of quantum-size semiconductor particles in a layered metal phosphonate host latticeGuang Cao, L. K. Rabenberg, Christine M. Nunn, and Thomas E. MalloukCite this: Chem. Mater. 1991, 3, 1, 149–156Publication Date (Print):January 1, 1991Publication History Published o…
Conversion of faujasites to high-silica chabazite SSZ-13 in the presence of N,N,N-trimethyl-1-adamantammonium iodide
The hydrothermal synthetic conversion of aluminium-rich zeolites to organo-zeolites in the presence of N,N,N-trimethyl-1-adamantammonium cations is now extended to the faujasite system. Rates of conversion are seen to be dramatically affected by various treatments of the FAU (faujasite) zeolites. Rates are depressed b…
Novel space vector based current controllers for PWM-inverters
Two novel, simple control strategies for current-controlled pulse-width modulated (PWM) transistor inverters are presented. Both methods are based on the three-level hysteresis comparators which select appropriate inverter output voltage vectors via a switching electrically programmable read-only memory (EPROM) table.…
A new, general strategy for achieving planar tetracoordinate geometries for carbon and other second row periodic elements
Highly stable structures with planar tetracoordinate central atoms, Al4O, Al4N–, Al3SiN, cis-Al2Si2C, trans-Al2Si2C and AlSi3B, are predicted computationally at the ab initio MP4SDTQ/6-311 + G*//MP2(full)/6-31G* level.
Diffusion in and through polymers: Principles and applications
A good review of most of the literature in the field of polymers published since 1968 makes this a good starting point for someone just entering the field. The author gives a thorough overview of many aspects of diffusion in polymers. The chapters are somewhat narrow in scope, though they provide useful material such…
Introduction to Semiconductor Materials and Devices
BASIC PHYSICS. Review of Atomic Structure and Statistical Mechanics. Crystalline Solids and Energy Bands. FUNDAMENTALS OF SEMICONDUCTORS. Semiconductor Materials and Their Properties. Carrier Transport in Semiconductors. Excess Carriers in Semiconductors. JUNCTIONS AND INTERFACES. p-n Junctions. Static I-V Characteris…
Biogenesis of Bacterial Cellulose
Cellulose is the most abundant biological polymer on Earth. It is found in wood and cotton, and forms the basic structural foundation of the cell wall of almost all eukaryotic plants. Bacteria are known to secrete cellulose as part of their metabolism of glucose and other sugars. The focus of this review is upon bacte…
Dielectric studies of the soft mode and Goldstone mode in ferroelectric liquid crystals
Different contributions to the dielectric permittivity in ferroelectric liquid crystals are discussed, with emphasis on the soft mode and the Goldstone mode and their location in the dielectric spectrum. Experimentally, the complex dielectric permittivity has been studied as a function of temperature and frequency in…
Microbiologically influenced corrosion of metals and alloys
In aquatic environments, microorganisms attach to metals and colonise the surface to form biofilms producing an environment at the biofilm/metal interface that is radically different from that of the bulk medium in terms of pH, dissolved oxygen, and organic and inorganic species and leading to electrochemical reaction…
Vacuum microelectronics: what's new and exciting
It is argued that the key factor required to make vacuum microelectronics successful is closely related to an understanding and control of the physics, materials and microfabrication technology for field emitter arrays (FEAs). The topics discussed are the optimization and theoretical limit of the FEA; thermal stabilit…
Glasses and the vitreous state
Foreword Introduction to the English edition Historical overview 1. Noncrystalline solids and glasses 2. The vitreous transition 3. Conditions for vitrification 4. Structure of glass: methods of study using radiation scattering 5. Structure of glass: use of spectroscopic methods 6. Phase separation in glasses 7. Study…
Antimicrobial effect of water‐soluble chitosans with high hydrostatic pressure
Two commercially available water‐soluble chitosan salts, chitosan lactate and chitosan hydroglutamate, were examined for antagonistic effect against Escherichia coli V517, Staphylococcus aureus MF‐31 and Saccharomyces cerevisiae 15. Significant inactivation of each population was evident within 2 min of incubation wit…
Dependence of slow crack growth in polyethylene on butyl branch density: Morphology and theory
Abstract A theoretical equation has been developed to described the rate of slow crack growth in an ethylene‐hexene copolymer in terms of the basic morphological parameters. These parameters are spacing of the butyl branches, number of tie molecules, and the thickness of the lamellar crystal. Experimentally, the thick…