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WO/1992/003395A1 |
The present invention provides a Lewis acid-catalyzed isoparaffin/olefin alkylation process in which acid consumption and energy costs are decreased by employing an acid sorption stage (70) to separate the Lewis acid catalyst (91) from t...
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WO/1992/003396A1 |
A process for isomerizing a paraffin having 4 to 10 carbon atoms comprises contacting the paraffin with a catalyst composition comprising a dehydrogenation/hydrogenation metal and a zeolite which exhibits the X-ray diffraction pattern of...
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WO/1992/000261A1 |
A method of removing sulfur components from a hydrocarbon stream which involves contacting a hydrocarbon stream including an initial amount of at least one sulfur species selected from the group consisting of mercaptans, organic sulfides...
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WO/1991/016283A1 |
A process for alkylating an aliphatic hydrocarbon having isobutane with an alkenyl hydrocarbon with isobutylene in the presence of a liquid onium polyhydrogen fluoride complex as the reaction medium and catalyst at a temperature between ...
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WO/1991/014500A1 |
The present invention relates to ceramic materials containing a homogeneous dispersion of one or more metals, particularly sol-gel ceramic materials, a method of preparing the same, and processes for hydrogenating or oxidizing organic co...
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WO/1991/013860A1 |
An improved coupling step of an alpha-APM manufacturing process is disclosed. The solvents in the coupling step are adjusted in one of two ways to improve the alpha- to beta- isomer ratio of the product of the coupling step, alpha,beta p...
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WO/1991/011412A1 |
The alkylation of an isoparaffin with an olefin to provide alkylate is carried out in the presence of, as catalyst, a zeolite having the above X-ray diffraction lines.
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WO/1991/010632A1 |
Alkali metal doped double perovskites containing manganese and at least one of cobalt, iron and nickel are useful in the oxidative coupling of alkane to higher hydrocarbons.
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WO/1991/009608A1 |
A pharmaceutical preparation for controlling pathogenic microorganisms causing diarrhoea and other gastrointestinal troubles in man and in animals contains Streptococcus lactis strain LIa in at least one pharmaceutically acceptable carri...
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WO/1991/004970A1 |
A process for preparing a compound containing (a) peroxyacetal lactone, (b) peroxyacetal lactol or (c) peroxyacetal ether functionality comprising oxygenating in the presence of one or more oxidizing metal catalysts a compound containing...
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WO/1991/004236A1 |
Oxidative coupling of lower alkane to higher hydrocarbon is conducted using catalyst comprising barium and/or strontium component and a metal oxide combustion promoter in the presence of vapor phase halogen component. High ethylene to et...
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WO/1991/004241A1 |
Oxidative coupling of lower alkane to higher hydrocarbon is conducted using supported catalyst comprising at least one of barium hydroxide, strontium hydroxide, barium and strontium carbonate in the presence of halogen component. High yi...
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WO/1991/004237A1 |
Oxidative coupling of lower alkane to higher hydrocarbon is conducted using supported catalyst comprising an activity promoting amount of at least one cobalt, nickel or rhodium compound and at least one catalytically active Group IA and ...
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WO/1991/004238A1 |
Volatilized metal compounds retard vapor phase alkane conversion reactions in oxidative coupling processes that convert lower alkanes to higher hydrocarbons.
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WO/1991/004240A1 |
Perovskites of the structure A2B2C3O10 are useful as catalysts for the oxidative coupling of lower alkane to heavier hydrocarbons. A is alkali metal; B is lanthanide or lanthanum, cerium, neodymium, samarium, praseodymium, gadolinium or ...
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WO/1991/000851A1 |
The present invention is a process and a catalyst for isomerizing normal and slightly branched C4 to C7 hydrocarbons. The catalyst comprises a Group VIII metal on Beta zeolite.
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WO/1991/000777A1 |
A crystalline low-aluminum boron beta zeolite is prepared using a diquaternary ion as a template.
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WO/1991/000141A1 |
The invention relates to a process and a device for the exchange of material between a gaseous phase (G21, G22) and at least one liquid phase (L21, L22). The process is characterized by the fact that contact with each other of at least a...
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WO/1990/011251A1 |
Method for producing heavy metal carbides with high specific surface area, characterized in that a gas compound of said metal is reacted with a reactive carbon of high specific surface area of at least 200 m?2¿g?-1¿ at a temperature co...
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WO/1990/002771A1 |
Azeotrope-like compositions comprising trichlorofluoromethane, dichlorotrifluoroethane and isopentane are novel compositions particularly useful as blowing agents in the preparation of polyurethane and polyisocyanurate foams.
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WO/1990/000534A1 |
A process for alkylating an isoparaffin containing up to 20 carbon atoms with an olefin containing from 2 to 12 carbon atoms comprises contacting the isoparaffin and olefin with a catalyst comprising a non-zeolitic solid inorganic oxide ...
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WO/1990/000533A1 |
A process for alkylating an isoparaffin containing up to 20 carbon atoms with an olefin containing from 2 to 12 carbon atoms comprises contacting the isoparaffin and olefin with a catalyst comprising a large pore zeolite and a Lewis acid...
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WO/1990/000086A1 |
An aqueous phase enclosing cations of at least one metal of the lanthanide group and cations of at least one alkaline earth metal with a sufficient quantity of a source of carbonate ions and possibly a source of hydroxide ions to form a ...
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WO/1989/012662A1 |
Novel lubricant compositions comprising polyalpha-olefins are disclosed having high viscosity indices with low pour point. The compositions are characterized by a uniform molecular structure with low branch ratios. The invention describe...
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WO/1989/011465A1 |
A fluidized bed catalytic process for conversion of propene-rich light olefinic gas feedstock comprising at least 2 mol % ethene and having a C3:C2 molar ratio of at least 2:1 to produce hydrocarbons rich in C4+ aliphatics and aromatics....
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WO/1989/011466A1 |
A process and reactor system is disclosed for hydrotreating a low sulfur containing olefinic distillate and conventional feedstock to a catalytic hydrodesulfurization. The process comprises passing a minor portion of the olefinic distill...
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WO/1989/009572A1 |
There is provided a dental tool for use with a reciprocating dental handpiece which comprises reciprocating drive means and a sleeve member operatively connected to the drive means for reciprocating motion and designed to retain a dental...
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WO/1989/009185A1 |
A crystalline zeolite SSZ-26 is prepared using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a template. Also disclosed is a process for converting hydrocarbons with crystalline zeolite SSZ-26.
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WO/1989/008138A1 |
A catalytic process for converting an organic material into a gas by heating the organic material in liquid water to a temperature of from 200 to 450°C at a pressure of from 50 to 350 atmospheres in the presence of a catalyst comprising...
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WO/1989/003725A1 |
A process for converting synthesis gas composed of hydrogen and carbon monoxide to hydrocarbons and a catalyst for the same. The process includes the step of contacting at reaction conditions a synthesis gas feed to a catalyst which incl...
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WO/1988/006576A1 |
Alkylation processes of the type used in the refining of petroleum can be improved by using a promoter composition which contains an alkyl phosphate ester amine salt and pinene.
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WO/1988/003436A1 |
The space-time yield and/or the selectivity of the photochemical dimerization of alkanes, ethers, primary and secondary alcohols, phosphine oxides and primary, secondary ant tertiary silanes with Hg and U.V. light is enhanced by refluxin...
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WO/1988/002361A1 |
Improved process for the acid-catalyzed conversion of a reactant into a reaction product wherein the improvement comprises contacting said reactant with an acid catalyst represented by general formula (I), wherein X is selected from the ...
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WO/1987/001053A1 |
A novel hydrocarbon alkylation catalyst comprising a mineral acid and an ether component. A process for utilizing the novel catalyst is also disclosed.
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WO/1986/007351A1 |
A process and catalyst for the synthesis of hydrogen, ethylene, ethane, and higher hydrocarbons from methane in the presence of oxygen. The catalyst comprises metal oxides selected from a Group IIA metal, a Group IIIA metal, a lanthanide...
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WO/1986/007350A1 |
Hydrocarbons having a carbon number greater than one are produced by contacting synthetis gas at elevated temperature and atmospheric or superatmospheric pressure with a catalyst having a composition represented by the formula: Coa.Ab.La...
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WO/1986/003910A1 |
A technology for providing electronic apparatus with immunity against static electricity, such that the circuits will not be erroneously operated or damaged due to the electric field, electromagnetic waves, or inflow of electric charges....
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WO/1986/002931A1 |
1,3-pentadiene is polymerized from a mixture of saturated and unsaturated hydrocarbon compounds, the compounds having primarily 5 carbon atoms per molecule, with an anionic polymerization initiator. The mixture of saturated and unsaturat...
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WO/1986/000297A1 |
Synthesis gas comprising carbon monoxide and hydrogen is converted to C5 hydrocarbons suitable for use as liquid motor fuels by contact with a dual catalyst system capable of enhancing the selectivity of said conversion to motor fuel ran...
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WO/1985/004866A1 |
A method for synthesizing hydrocarbons from a methane source which comprises contacting methane with a reducible oxide of Pr, Tb, Ce, Fe or Ru. The oxide is preferably combined with an amount of alkali and/or alkaline earth metal which i...
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WO/1985/004864A1 |
A method for converting methane to higher hydrocarbon products by contacting a hydrocarbon gas comprising methane, an oxygen-containing gas and a reducible metal oxide under synthesis conditions, the improvement which comprises contactin...
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WO/1985/004863A1 |
A monohalomethane is converted to a product comprising hydrocarbons having at least 2 carbon atoms and in particular aliphatic hydrocarbons in the gasoline boiling range by contact with a synthetic crystalline gallosilicate zeolite loade...
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WO/1985/004821A1 |
An improved method for converting methane to higher hydrocarbon products by contacting a gas comprising methane with a contact agent at a selected temperature, the agent comprising a reducible metal oxide, a support of oxides of silicon ...
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WO/1985/004854A1 |
Molecular sieve compsitions are prepared by extracting aluminum and substituting titanium and/or iron for extracted aluminum to give molecular sieve products containing framework titanium and/or iron atoms. The process of preparing the t...
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WO/1985/003016A1 |
Silanised pillared interlayered clays which are produced by hydrolysing a hydrolysable silicon compound in the liquid or vapour phase in the presence of a pillared interlayered clay or a precursor thereof. The resulting silanised clays a...
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WO/1985/003015A1 |
A silanised layered clay comprising a layered clay chemically modified by incorporation therein of a silicon-containing residue inthe absence of a polymeric cationic hydroxy inorganic metal complex. The silanised layered clays are produc...
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WO/1985/003072A1 |
The gas to be treated is cooled and partially condensed in two steps (3-4, 5-6) and the condensed fractions are distilled in a column (9). A portion of the condensed liquid in the column head is under cooled in the second exchanger (5), ...
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WO/1985/002399A1 |
A C1 to C4 monohaloalkane is converted to hydrocarbons having a greater number of carbon atoms than the monohaloalkane reactant, in particular to aliphatic hydrocarbons in the gasoline boiling range, by contacting the monohaloalkane at e...
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WO/1984/004319A1 |
A composition comprising: (A) a metal salt of (A)(I) at least one acid of the formula (I), wherein each X and X1 is independently oxygen or sulfur, each n is zero or one, and each R1 is independently the same or different hydrocarbon bas...
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WO/1983/001294A1 |
Improvement in a Ryan/Holmes separation of methane from carbon dioxide wherein the upper portion of a distillation column is operated at temperatures above the triple point of carbon dioxide, i.e., -70oF, while still effectuating a separ...
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