Thoria catalyst
WebA supported thoria catalyst was prepared using 100 grams of alpha alumina from Norton Company. The support was in the form of spheres having a diameter of about 3.2 mm … WebJul 1, 2004 · The Pt/thoria catalyst exhibited a higher concentration of formate bands upon CO addition than Pt/ceria (105m2/g), indicating higher active site densities on a per gram …
Thoria catalyst
Did you know?
WebJul 30, 2004 · Compared with the Pt/thoria catalyst shown in Fig. 9, the unpromoted thoria exhibited much lower activity. Under the same testing conditions, the conversions were … WebThe catalyst used in the process was a Fischer-Tropsch cobalt-thoria catalyst. The temperature was usually between 130-160° and a total pressure of 200 atm. of water gas (1II2 ICO) was usually employed. The reaction was carried out first with ethylene and the products were found to consist of a mixture of diethyl ketone and propionaldehyde.
WebOct 1, 1984 · Aldol condensation of benzaldehyde with a variety of carbonyl compounds yielded phenyl alkyl ketones in addition to the expected condensation products over … WebSep 22, 2016 · Single-atom catalysts are of great interest and importance for designing new high-performance low-cost catalysts. We investigated CO oxidation catalyzed by single gold atoms supported on thoria (Au/ThO 2) and doped ThO 2 using density functional theory with Hubbard-type on-site Coulomb interaction (DFT + U). The calculation results show that the …
WebDec 1, 1980 · The mechanistic aspects of the reactions are discussed. INTRODUCTION Thoria is known to catalyze the dehydra- tion of alcohols to form olefins and phenols to ethers (/, 2). In recent years, it has been shown to be a selective catalyst for the conversion of 2-alkanols to 1-alkenes (3, 4). Thoria does not catalyze the forma- tion of dialkyi ... WebNov 15, 1986 · For all these reasons a demonstrated catalytic activity for thoria would disqualify the usual redox process as the likely mechanism of the catalyzed gasification …
WebJan 1, 2024 · A series of alumina and K ion modified supported thoria catalysts were prepared using thorium nitrate hexahydrate at different loading levels (3-20 wt% of thoria) by the impregnating method.
WebJul 5, 2016 · The primary olefin distribution was determined for the dehydration of 2-octanol over several alumina and thoria catalysts. Rather than attempt the elimination of secondary reactions, the ... green beans with red wine vinegarWebAbstract. The interaction between carbon dioxide and hydrogen was studied in presence of nickel and nickel thoria catalysts at atmospheric pressure and at elevated pressures of th green beans with red bell pepperWebMar 1, 1989 · In the flow system, active palladium thoria catalysts suffered consider- able deactivation when left for long periods (more than 8 h) under ambient conditions, showing no response below 100 13, Fig. 3. However, at a pellistor temperature of between 100 and 120 C, a slow recovery of activity occurred, a light-off effect. green beans with purple stripesWebFeb 1, 1976 · Infrared studies of adsorbed 2-hexanol and 1-d 3-2-hexanol over thoria show that secondary alcohols are dehydrated on this catalyst via a surface alcoholate.A study … flowers in winter fort collinsWebThe nature of the support had no detectable influence on the catalytic activity during a given experiment, but was found to affect the long-term stability of the catalyst. Investigations have been made of the kinetics of the oxidation of methane over a palladium/thoria catalyst both in the absence and in the presence of the reaction products. green beans with roasted shallotsWebFeb 22, 2024 · Sodium-ion batteries (SIBs) are considered a potential replacement for lithium-ion batteries in the area of low-cost large-scale energy storage. Due to its low operating voltage, high capacity, non-toxicity and low production cost, titanium dioxide is now among the anode materials under investigation and shows the most promise. … green beans with red pepperThorium dioxide (ThO2), also called thorium(IV) oxide, is a crystalline solid, often white or yellow in colour. Also known as thoria, it is produced mainly as a by-product of lanthanide and uranium production. Thorianite is the name of the mineralogical form of thorium dioxide. It is moderately rare and crystallizes in … See more Thoria exists as two polymorphs. One has a fluorite crystal structure. This is uncommon among binary dioxides. (Other binary oxides with fluorite structure include cerium dioxide, uranium dioxide and plutonium dioxide.) … See more • Haynes, William M., ed. (2011). CRC Handbook of Chemistry and Physics (92nd ed.). CRC Press. ISBN 978-1439855119. See more Nuclear fuels Thorium dioxide (thoria) can be used in nuclear reactors as ceramic fuel pellets, typically contained in nuclear fuel rods clad with zirconium … See more flowers in winthrop ma