catalysis - Lehigh University
... since at monolayer coverage all the reactive surface hydroxyls are titrated and additional metal oxide results in the formation of crystalline metal oxide particles. The nature of surface Lewis and BrCnsted acid sites present in supported metal oxide catalysts are determined by adsorbing basic probe ...
... since at monolayer coverage all the reactive surface hydroxyls are titrated and additional metal oxide results in the formation of crystalline metal oxide particles. The nature of surface Lewis and BrCnsted acid sites present in supported metal oxide catalysts are determined by adsorbing basic probe ...
Transition metal oxides ∓ Thermoelectric properties
... Thermoelectric (TE) materials are utilised for the conversion of a temperature gradient to a voltage gradient and vice versa. TE materials are widely regarded as the materials that can provide potential solutions for power generation and refrigeration technologies as well as their future advancement ...
... Thermoelectric (TE) materials are utilised for the conversion of a temperature gradient to a voltage gradient and vice versa. TE materials are widely regarded as the materials that can provide potential solutions for power generation and refrigeration technologies as well as their future advancement ...
Types of Casting
... of parting compound to prevent the plaster from sticking to the pattern. The plaster is then poured over the pattern and the unit shaken so that the plaster fills any small features. The plaster sets, usually in about 15 minutes, and the pattern is removed. The mold is then baked, between 120 °C (24 ...
... of parting compound to prevent the plaster from sticking to the pattern. The plaster is then poured over the pattern and the unit shaken so that the plaster fills any small features. The plaster sets, usually in about 15 minutes, and the pattern is removed. The mold is then baked, between 120 °C (24 ...
Chem Soc Rev
... processes that satisfy the principles of green chemistry.8,9 In particular, it is highly desirable to develop new catalytic oxidation processes to replace the current energetically inefficient and/or environmentally unfriendly multi-step reactions. The catalytic oxidation of alcohols to aldehydes or k ...
... processes that satisfy the principles of green chemistry.8,9 In particular, it is highly desirable to develop new catalytic oxidation processes to replace the current energetically inefficient and/or environmentally unfriendly multi-step reactions. The catalytic oxidation of alcohols to aldehydes or k ...
Chapter 9 Review, pages 628–633
... of oxygen in its compounds is –2. Since there are 2 hydrogen atoms in H2C2O4(aq), the total contribution of the hydrogen atoms is +2. Since there are 4 oxygen atoms, the contribution of the oxygen atoms is –8. The 2 carbon atoms must have an oxidation number of +6 to give a sum of 0. Therefore, the ...
... of oxygen in its compounds is –2. Since there are 2 hydrogen atoms in H2C2O4(aq), the total contribution of the hydrogen atoms is +2. Since there are 4 oxygen atoms, the contribution of the oxygen atoms is –8. The 2 carbon atoms must have an oxidation number of +6 to give a sum of 0. Therefore, the ...
Catalysts Containing Depleted Uranium Compounds
... air conditions. Catalysts based on uranium salts are easy for recycling, whereas reaction products can be readily purified. It has been revealed that complexes of U4+ è U6+ are bright coloured, readily forming acilated ions, not forming complexes with ketones and aromatic esters. A possible mechanis ...
... air conditions. Catalysts based on uranium salts are easy for recycling, whereas reaction products can be readily purified. It has been revealed that complexes of U4+ è U6+ are bright coloured, readily forming acilated ions, not forming complexes with ketones and aromatic esters. A possible mechanis ...
Corrosion of Ceramic and Composite Materials, Second Edition
... liquid phase sintering (also crystal growth studies) and the dissolution of various raw materials in molten glass in the manufacture of glass products. The proper selection of materials and good design practices can greatly reduce the cost caused by corrosion. To make the proper selection, engineers ...
... liquid phase sintering (also crystal growth studies) and the dissolution of various raw materials in molten glass in the manufacture of glass products. The proper selection of materials and good design practices can greatly reduce the cost caused by corrosion. To make the proper selection, engineers ...
Ab-initio calculations for structural properties of Zr–Nb alloys
... zones, fuel assemblies, heat-generating elements, etc. Therefore, the key problem for material science security of modern nuclear power and for the future power engineering is the study of micro-structure evolution and its effect on the behavior of physical and mechanical characteristics of material ...
... zones, fuel assemblies, heat-generating elements, etc. Therefore, the key problem for material science security of modern nuclear power and for the future power engineering is the study of micro-structure evolution and its effect on the behavior of physical and mechanical characteristics of material ...
investigation of the resistance to demagnetization in bulk rare
... of finishing up my degree has seemed much less daunting with his help. I really don't know how I could have gotten to this point without him. ...
... of finishing up my degree has seemed much less daunting with his help. I really don't know how I could have gotten to this point without him. ...
lithospheric strength profiles
... Equation (3) says that the higher the applied stress, the faster the material will deform. Conversely, a higher flow rate is associated with an increase in the magnitude of shear stress. The total strain is dependent both on the magnitude of the stress and the length of time for which it is applied. ...
... Equation (3) says that the higher the applied stress, the faster the material will deform. Conversely, a higher flow rate is associated with an increase in the magnitude of shear stress. The total strain is dependent both on the magnitude of the stress and the length of time for which it is applied. ...
TiO2-graphene oxide nanocomposite as advanced photocatalytic
... Results: TiO2-Graphene Oxide (TiO2 - GO) nanocomposite was prepared by thermal hydrolysis of suspension with graphene oxide (GO) nanosheets and titania peroxo-complex. The characterization of graphene oxide nanosheets was provided by using an atomic force microscope and Raman spectroscopy. The prepa ...
... Results: TiO2-Graphene Oxide (TiO2 - GO) nanocomposite was prepared by thermal hydrolysis of suspension with graphene oxide (GO) nanosheets and titania peroxo-complex. The characterization of graphene oxide nanosheets was provided by using an atomic force microscope and Raman spectroscopy. The prepa ...
Superalloy
A superalloy, or high-performance alloy, is an alloy that exhibits several key characteristics: excellent mechanical strength, resistance to thermal creep deformation, good surface stability and resistance to corrosion or oxidation. The crystal structure is typically face-centered cubic austenitic. Examples of such alloys are Hastelloy, Inconel, Waspaloy, Rene alloys, Haynes alloys, Incoloy, MP98T, TMS alloys, and CMSX single crystal alloys.Superalloy development has relied heavily on both chemical and process innovations. Superalloys develop high temperature strength through solid solution strengthening. An important strengthening mechanism is precipitation strengthening which forms secondary phase precipitates such as gamma prime and carbides. Oxidation or corrosion resistance is provided by elements such as aluminium and chromium.The primary application for such alloys is in turbine engines, both aerospace and marine.