摘要:
To provide a perovskite-type composite oxide which has stable quality in which a solid solution of Pd is formed at a high rate, a method for producing the perovskite-type composite oxide, and a catalyst composition containing the perovskite-type composite oxide, the perovskite-type composite oxide is produced by formulating materials in accordance with each atomic ratio of a perovskite-type composite oxide represented by the following general formula (1):
A x B (1-y) Pd y O 3+δ (1)
wherein A represents at least one element selected from rare earth elements and alkaline earth metals; B represents at least one element selected from transition elements (excluding rare earth elements, and Pd), Al and Si; x represents an atomic ratio satisfying the following condition: 1
摘要翻译:为了提供以高速率形成Pd固体质量的稳定质量的钙钛矿型复合氧化物,制备钙钛矿型复合氧化物的方法和含有钙钛矿型复合氧化物的催化剂组合物, 钙钛矿型复合氧化物根据以下通式(1)表示的钙钛矿型复合氧化物的原子比配制材料来制造:ƒ€ƒ€ƒ€ƒ€ƒ€ƒA× B(1-y)Pd y O 3 +'€€ƒ€ƒ€ƒ(1)其中A表示选自稀土元素和碱土金属中的至少一种元素; B表示选自过渡元素(不包括稀土元素和Pd),Al和Si中的至少一种元素; x表示满足以下条件的原子比:1
摘要:
A catalyst for the hydrogenation of carboxylic acids which comprises activated carbon having deposited thereon active metals including ruthenium and tin, characterized in that the activated carbon is one produced by a process comprising activating a carbonaceous material with zinc chloride and then burning it; a catalyst for the hydrogenation of carboxylic acids which comprises activated carbon having deposited thereon active metals including ruthenium and tin, characterized in that the activated carbon, before deposition of the active metals, had specific pore properties, in particular, such properties that the volume of pores having a pore radius not smaller than 10 ANGSTROM but not larger than 100 ANGSTROM was from 0.5 to 2.0 cm /g; and a process for producing a primary alcohol which comprises reacting at least one starting material selected from the group consisting of carboxylic acids and acid anhydrides with hydrogen gas in the presence of water and either of the catalysts to hydrogenate the starting material
摘要:
The invention relates to a multilayer catalyst for the partial oxidation of hydrocarbons in gaseous phase, comprising a monolithic ceramic or metallic substrate having a solid macroporous structure consisting of one or more structures, on which a first active layer with a crystal-line perovskitic structure is deposited, having general formula AxA’ 1-xByB’ 1-YO3±δ wherein: A is a cation of at least one of the rare earth elements, A’ is a cation of at least one element selected from groups Ia, IIa and VIa of the periodic table of elements, B is a cation of at least one element selected from groups IVb, Vb, VIb, VIIb, or VIII of the periodic table of elements, B’ is a cation of at least one element selected from groups IVb, Vb, VIb, VIIb or VIII of the periodic table of elements Mg2+ or Al3+, x is a number which is such that 0 ≤ x ≤ 1, y is a number which is such that 0 ≤ y ≤ 1, and δ is a number which is such that 0 ≤ δ ≤ 0, 5, a second more external active layer consisting of a dispersion of a noble metal and a possible supporting layer with a large surface area, positioned between said monolithic substrate and said first active layer with a perovskitic structure. The invention also relates to a process for the production of said catalyst and its use for the partial oxidation of hydrocarbons in gaseous phase.
摘要:
A catalyst for reforming a hydrocarbon which comprises a carrier containing manganese oxide and, carried thereon, (a) a least one component selected from among a ruthenium compound, a platinum component, a rhodium component, a palladium component, an iridium component and a nickel component; a method for preparing the catalyst; and a process for reforming a hydrocarbon (steam reforming, self thermal reforming, partial oxidation reforming or carbon dioxide reforming) using said catalyst. The catalyst has ruthenium, platinum, rhodium, palladium, iridium or nickel as an active component, and exhibits improved reforming activities.
摘要:
The present invention includes a loyalty program on a network-wide level, wherein the program facilitates a transfer of loyalty points from at least one consumer account associated with a sponsoring company to at least one consumer account associated with a host company. In one embodiment, the invention analyzes the loyalty point balances of consumer accounts associated with a sponsoring company, and based upon certain criteria or rules, the system determines particular loyalty point balances which are below a certain threshold amount or which have remained inactive for a certain time period. After determining particular consumer accounts which meet the criteria or rules, the system establishes a new host account in a host system for each qualifying consumer. The system then deducts all or any portion of the remaining loyalty point balance in the particular consumer's sponsored account and credits the corresponding host account with a corresponding loyalty point balance. By transferring the consumer accounts to a host system, the sponsoring company eliminates or reduces the loyalty point balances from its system, thereby reducing the sponsoring company accounting liabilities and providing new options for the consumers to redeem the points.
摘要:
Deactivation of a reformer catalyst is inhibited by charging a hydrocarbon feed having a concentration of an organic aluminum halide compound to a reformer reactor operating under reforming conditions and containing a reformer catalyst.
摘要:
In dem Verfahren zur Herstellung von C 2 -Oxygenaten durch Umsetzung von CO und H 2 an einem rhodiumhaltigen Trägerkatalysator enthält der Katalysator, bezogen auf das Gesamtgewicht, 0,01 bis 10 Gew.-% Rhodium 0,001 bis 10 Gew.-% Zirkonium 0,01 bis 5 Gew.-% Iridium 0,01 bis 10 Gew.-% mindestens eines Metalls, ausgewählt aus Kupfer, Kobalt, Nickel, Mangan, Eisen, Ruthenium und Molybdän 0,01 bis 10 Gew.-% mindestens eines Alkali- oder Erdalkalimetalls, ausgewählt aus Lithium, Natrium, Kalium, Rubidium, Magnesium und Calcium auf einem inerten Träger.
摘要:
The invention concerns a composition for purifying exhaust gases of an internal combustion engine capable of consuming fuel with lean air-fuel ratios comprising means adsorbing the NOx present in the exhaust gases, in the presence of excess oxygen and releasing the adsorbed NOx when the oxygen concentration of the exhaust gases decreases. The invention is characterised in that the NOx adsorbing means comprise in combination: a first composition comprising a support and an active phase, the active base being based on manganese and at least another element A selected among alkalines and alkaline-earths, the manganese and element A being chemically bound; a second composition comprising a support and an active phase based on manganese and at least another element B selected among alkalines, alkaline-earths and rare earths, said second composition having or being capable of having a specific surface area of at least 80 m /g after being calcined at 800 DEG C, and furthermore, a reducing and/or three-way catalyst function is incorporated in the NOx adsorbing means.
摘要:
The invention relates to aromatic amines which are produced by catalytically hydrogenating corresponding aromatic nitrocompounds in a gaseous phase. Hydrogenation is carried out in the presence of catalysts which contain palladium, vanadium and lead as well as rhenium on a ceramic carrier with a BET surface of less than 40 m /g at temperatures ranging from 180 to 500 DEG C in the catalyst bed and with a molar ratio of hydrogen to the nitrogroup(s) ranging from 3:1 to 30:1.