1,655 Result(s)
within
English
Industrial Chemistry/Chemical Engineering
Yu** Zhou
Chemistry
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Chapter
ESCA and AES Studies of the Interfacial Chemical Bonding Between Aluminum and Chromium (III) Fumarato-Coordination Compound
The chromium(III) fumarato-coordination compound, commercially known as Volan 82, is a coupling agent developed by DuPont in the early 1970s. It has proven to be a very successful bonding agent between aluminu...
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Article
The kinetics of desorption in the presence of a gas phase of the desorbing molecule: CO/Re(001)
TPD/Exchange from CO/Re(001) in a gas ambience showed that the absolute rate of desorption depends on the gas pressure and has a first plus second order rate law. It is proposed that desorption is a two step p...
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Article
The catalytic oxidation of CO on superconductor Ba2YCu3O7–8
The measurements of MS-TPD, TPRS, the electrical conductivity and kinetics on Ba2YCu3O7-8 show that the catalytic activity of CO oxidation is closely related to properties such as the amounts and sites of oxygen,...
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Article
Thermal decomposition of C2H5I on Ag(111)
The decomposition of C2H5I on Ag(111) has been studied using temperature programmed desorption (TPD), work-function change measurements (ΔΦ) and X-ray photoelectron spectroscopy (XPS). Adsorption of C2H5I at 100 ...
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Chapter
Intelligent Conceptual Design for Mechanical Systems
In mechanical system design, the Integrated Computer Aided Design (ICAD) techniques have evolved a new generation of design techniques. It also paves the way for implementing Computer Integrated Manufacturing ...
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Chapter and Conference Paper
AC Hysteresis Loss, Lower Critical Field, and Critical Current Density at 77 K in Melt Processed YBa2Cu3O7−δ Wires and Rods
The AC hysteretic loss at 77 K in three samples of melt-processed YBa2Cu307-δ (YBCO) rods and wires has been measured over a wide range of applied field sweep amplitudes, Hm, using vibrating sample magnetometry. ...
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Article
Production of sophorose lipids byTorulopsis bombicola from safflower oil and glucose
The production of sophorose lipids increased with increasing concentrations of both safflower oil and glucose, and was profoundly influenced by the concentration of yeast extract. A high concentration of sopho...
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Article
Role of metallic tin in PtSn reforming catalysts
Metallic tin was detected using X-ray photoelectron spectroscopy (XPS) after H2 reduction of 5%Pt/SnO2, 5%Pt-5%Sn/SiO2, and 5%Pt-29%Sn/Al2O3. However, no metallic tin could be detected in PtSn/Al2O3 catalysts wit...
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Chapter and Conference Paper
Surface Structure and Chemistry of Cuprate Superconductors
The surface structure of model superconductors La2CuO4, Bi2Sr2CaCu2O8, Tl2Ba2Ca2Cu3O10, (Tl, Pb) Sr2Ca2Cu3O9 and YBa2Cu3O7−∂ has been investigated by high resolution electron microscopy. These crystals are freque...
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Article
Methane oxidative coupling over fluoro-oxide catalysts
LaF3 modified ZrO2, CeO2 and ThO2 catalysts for the oxidative coupling of methane indicate that ZrO2/LaF3, CeO2/LaF3 and ThO2/LaF3 catalysts have high activity and high selectivity at low temperature. In the temp...
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Article
Role of dissolution of Mn(iii) species in discharge and recharge of chemically-modified MnO2 battery cathode materials
Various experimental techniques, including cyclic-voltammetry, constant current discharge and recharge, with a detecting electrode for determination of soluble Mn(iii) intermediate species, were used to study the...
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Article
Oxidative coupling of methane over BaF2-TiO2 catalysts
The addition of F− to Ba-Ti mixed oxide catalysts significantly improves the catalytic performances for the oxidative coupling of methane (MOC), which can achieve high C2 yields at wide feed composition range and...
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Chapter and Conference Paper
The Copper Oxides As Guides to New Superconductors
The copper oxides provide not only a remarkably high critical temperature Tc, but also model systems for the study of this new phenomenon. The search for new materials must be guided not only by our understanding...
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Chapter
The Effect of Artificial Pinning Centers on the Superconducting Properties of Nb and Nb3Sn
The superconducting properties of Nb and Nb3Sn with nanometer-size copper artificial pinning centers (APC) are investigated. The non-scaling of the pinning force with temperature for APC enhanced Nb sample is obs...
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Chapter
Texture Formation in The Bi-System Superconductor
The powder-in-tube method was used to produce Ag-sheathed samples from two precursor methods to study the texture formation of the 2223 superconducting phase in Bi-system tapes. Experimental results showed tha...
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Chapter
Development of a 25 K Hydrogen Refrigerator with Hydride Sorption Compressor
A hydrogen sorption compressor using Ti base and rare earth base hydride materials has a lot of advantages because of the lack of moving parts in the system except the check valves. It has a long life expectan...
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Chapter
Applications of Petri net methodology to manufacturing systems
Computer-integrated engineering systems are event-driven and often asynchronous, exhibiting concurrent, sequential, competitive and coordinated activities among their components. They are often complex and lar...
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Article
The oxidative coupling of methane and the activation of molecular O2 on CeO2/BaF2
CeO2/BaF2 was used as the catalyst for the oxidative coupling of methane (OCM). At 800°C and CH4∶O2=2.7∶1,CH4 conversion of 34% with C2 hydrocarbon selectivity of 54.3% was obtained. XRD measurement showed that p...
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Article
Oxidative dehydrogenation of propane over fluorine promoted rare earth-based catalysts
Catalysts based on rare earth complexes such as CeO2/2CeF3, Sm2O3/4CeF3, Nd2O3/ 4CeF3 and Y2O3/4CeF3 were prepared. These catalysts were active for the oxidative dehydrogenation of propane with very high selectiv...
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Article
Anodic film on lead-arsenic alloy in sulphuric acid medium
The phase composition, anodic behaviour and semiconducting properties of the anodic film on Pb-6 at % As alloy have been investigated. The linear relationship between i and t −1/2 shows that the anodic film growt...
