Abstract:
Disclosed is a method for reforming hydrocarbons comprising contacting the hydrocarbons with a catalyst in a reactor system (10, 20, 30) of improved resistance to carburization and metal dusting under conditions of low sulfur.
Abstract:
A fuel composition comprising a major amount of hydrocarbons boiling in the gasoline or diesel range and an effective detergent amount of a hydroxyalkyl-substituted amine which is the reaction product of: a) a polyolefin epoxide derived from a branched chain polyolefin having an average molecular weight of about 400 to 5,000; and b) a nitrogen-containing compound selected from ammonia, a monoamine having from 1 to 40 carbon atoms, and a polyamine having from 2 to about 12 amine nitrogen atoms and from 2 to about 40 carbon atoms.
Abstract:
A method is provided for forming (3-trifluoromethyl-phenyl)acetonitrile through the intermediate alpha , alpha , alpha -trifluoro- alpha '-chloro-m-xylene. This intermediate is formed by selective chlorination of alpha , alpha , alpha '-trichloro-m-xylene under conditions which maximize yield and minimize the formation of undesired, non-recyclable chlorinated by-products.
Abstract:
A multi-stage reforming process is described in which a conventional reforming catalyst (12) is used upstream of an intermediate pore size crystalline silicate containing a Group VIII metal (14). The conventional catalyst is operated at typical reforming conditions and the crystalline silicate is operated at lower pressures. At least a portion of the hydrogen and substantially all of the hydrogen sulfide present is removed (18) from the penultimate stage reformate before it is used in the feed to the final stage.
Abstract:
A homogeneous fuel additive composition which comprises: (a) a dispersant comprising a hydrocarbyl poly (oxyalkylene) aminocarbamate having at least one basic nitrogen atom and an average molecular weight of about 1000 to about 3000; (b) an injection detergent comprising a branched-chain hydrocarbyl amine having at least one basic nitrogen atom and an average molecular weight of about 300 to about 700, wherein the hydrocarbyl moiety is derived from polymers of C2 to C6 olefins; (c) a fuel demulsifier which is homogeneous with the other components of said fuel additive composition; and (d) a natural or synthetic carrier fluid.
Abstract:
This invention makes possible substantially continuous flow of uniformly distributed hydrogen and hydrocarbon liquid across a densely packed catalyst bed to fill substantially the entire volume of a reactor vessel (11) by introducing gas and liquid through alternate annular rings (26) and (27) across the full area of the bed at a design feed rate insufficient to levitate or ebulate the packed bed containing catalyst selected by density, shape, and size. At the desired flow rate, catalyst is introduced at the top of the bed by laminarly flowing such catalyst in a liquid stream on a periodic or semicontinuous basis, such catalyst continually flows in a plug-like manner downwardly through the vessel. Catalyst is similarly removed by laminarly flowing catalyst particles in a liquid stream out of the bottom of the bed. Intake of catalyst outflow (32) is out of direct contact with the stream of gas flowing through the bed. The path of the catalyst outflow is substantially constant in cross-sectional area and several times greater in diameter than the catalyst particle diameter.
Abstract:
Rubber modified styrenic oxygen scavenging compositions, films and articles are set forth. They comprise a solid continuous phase comprising a styrenic phase which has been graft polymerized onto a disperse elastomeric phase to provide a weight ratio of disperse to continuous phase of less than about 30:70. A transition metal catalyst is dispersed in the composition.
Abstract:
Poly(oxyalkylene) hydroxyaromatic ethers having formula (I), or a fuel-soluble salt thereof; where n is an integer from 5 to 100; x is an integer from 0 to 10; R1 and R2 are each independently hydrogen, hydroxy, lower alkyl having 1 to 6 carbon atoms, or lower alkoxy having 1 to 6 carbon atoms; R3 and R4 are each independently hydrogen or lower alkyl having 1 to 6 carbon atoms; R5 is an acyl group of formula (a), where y is 1, 2 or 3; R6 is a divalent hydrocarbyl radical, when y is 1, a trivalent hydrocarbyl radical, when y is 2, or tetravalent hydrocarbyl radical, when y is 3, said hydrocarbyl radicals having 1 to about 20 carbon atoms; and each Z is independently selected from the group consisting of (b) and (c) where each R7 is independently alkyl having 1 to 30 carbon atoms, phenyl aralkyl having 7 to 36 carbon atoms or alkaryl having 7 to 36 carbon atoms. The poly(oxyalkylene) hydroxyaromatic ethers of formula (I) are useful as fuel additives for the prevention and control of engine deposits.
Abstract translation:具有式(I)的聚(氧化烯)羟基芳族醚或其燃料可溶性盐; 其中n是5至100的整数; x是0至10的整数; R 1和R 2各自独立地为氢,羟基,具有1至6个碳原子的低级烷基或具有1至6个碳原子的低级烷氧基; R 3和R 4各自独立地为氢或具有1至6个碳原子的低级烷基; R5是式(a)的酰基,其中y是1,2或3; 当y为1时,当y为2时,R 6为二价烃基,当y为2时为四价烃基,当y为3时,所述烃基为1至约20个碳原子; 并且每个Z独立地选自(b)和(c),其中每个R 7独立地为具有1至30个碳原子的烷基,具有7至36个碳原子的苯基芳烷基或具有7至36个碳原子的烷芳基。 式(I)的聚(氧化烯)羟基芳族醚可用作预防和控制发动机沉积物的燃料添加剂。
Abstract:
The NOx content of FCC regenerator flue gas is reduced using a spinel/perovskite additive which maintains activity during FCC operation in the presence of high levels of sulfur oxides and oxygen. Additionally, a stabilization component may be added to enhance catalytic stability of the additive, and a cracking component may be added under conditions of low reducing agents in the regenerator flue gas.