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7408089 Ni catalyst, process for making catalysts and selective hydrogenation process  
More selective and efficient Ni hydrotreating catalysts are those which contain more than about 60% of the Ni content on the peripheral surface of porous supports, such as extruded alumina, which...
7390933 Reduction of the Bromine Index of linear alkylbenzenes  
In a process for reducing the Bromine Index of a feed containing a linear alkylbenzene and bromine-reactive olefinic hydrocarbon contaminants, the feed is contacted under conditions effective to...
7385097 Process for the purification of a diolefin hydrocarbon stream  
A process for the purification of a diolefin hydrocarbon stream containing acetylene and sulfur compounds.
7301062 Process for the selective hydrogenation of alkynes and/or dienes in an olefin-containing hydrocarbon stream  
A process for the selective hydrogenation of one or more alkyne and/or one or more diene in an olefin-containing hydrocarbon feed includes contacting the hydrocarbon feed with a catalyst under...
7297824 Ni hydrogenation catalysts, manufacture and use  
Improved Ni catalysts for hydrogenation reactions are disclosed. The catalysts are useful for hydrogenation such as selective hydrogenation of acetylenic impurities in crude olefin and diolefin...
7208646 Selective hydrogenation of butadiene  
A process for the selective hydrogenation of dienes in mixed streams of olefin containing hydrocarbons, such as butadiene in a mixed C 4 stream with minimum loss of monoolefins is disclosed...
7199273 Selective hydrogenation of alkynes and/or diolefins  
A process for selectively removing alkynes and/or diolefins from a feedstock also containing olefins comprises contacting the feedstock with hydrogen in the presence of a catalyst composition. The...
7041860 Process for the selective hydrogenation of alkynes  
An improved selective hydrogenation process for removing acetylenic impurities such as vinyl acetylene, ethyl acetylene, propyl acetylene and acetylene in a steam cracked crude butadiene stream by...
7009085 Selective hydrogenation catalyst and processes therefor and therewith  
A catalyst composition comprising an inorganic support material, a palladium component, a silver component, and a promoter component having the formula XYF n , wherein X is an alkaline metal, Y is...
6949686 Pyrolysis gasoline stabilization  
A method for stabilizing pyrolysis gasoline by hydrogenating same over a Group VIII metal catalyst wherein the catalyst is promoted against poisoning by at least one metal from Groups I B, VI B,...
6858766 Process for selectively hydrogenating mixed phase front end C2-C10 greater unsaturated hydrocarbons  
The present invention provides a process for selectively hydrogenating C 2 -C 10 greater unsaturated hydrocarbons (acetylenes and diolefins) at the upstream side of a front depropanizer or front...
6830678 Process of desulphurizing gasoline comprising desulphurization of the heavy and intermediate fractions resulting from fractionation into at least three cuts  
The invention relates to a process of producing gasoline with a low sulphur content from a feedstock containing sulphur. This process comprises at least one step a1 of selectively hydrogenating the...
6822127 Selective hydrogenation catalyst for selectively hydrogenating of unsaturated olefin, process for preparing the same and its use  
A selective hydrogenation catalyst for the seletive hydrogenation of unsaturated hydrocarbons, a process for preparing this catalyst and its use. The catalyst of the invention comprises a support,...
6759562 Olefin plant recovery system employing a combination of catalytic distillation and fixed bed catalytic steps  
Presented is an improvement to a previous invention involving the catalytic hydrogenation of the C 2 to C 5 and heavier acetylenes and dienes in a thermally cracked feed stream without...
6747181 Process for the hydrogenation of phenyl acetylene in a styrene-containing medium with the aid of a catalyst  
The invention relates to a process for the hydrogenation of phenyl acetylene in a styrene-containing medium with the aid of a supported nickel catalyst with a nickel content of 10-25 wt. %. This...
6734328 Process for the selective hydrogenation of alkynes  
An improved selective hydrogenation process for removing acetylenic impurities such as vinyl acetylene, ethyl acetylene, propyl acetylene and acetylene in a steam cracked crude butadiene stream by...
6689926 Process for purifying styrene monomer feedstock prior to polymerization  
A process is disclosed which provides for the reduction of phenylacetylene levels in styrene monomer feedstreams, which process utilizes a normal styrene inhibitor additive, such as an...
6686510 Production of high-purity isobutene and propylene from hydrocarbon fractions with four carbon atoms  
A process for production, from an olefinic C 4 fraction, on the one hand, of high-purity isobutene and, on the other hand, of propylene by metathesis is described. The process comprises three...
6632414 Mini-structured catalyst beds for three-phase chemical processing  
Three-phase chemical hydrogenation reactions involving the processing of gas-liquid reactant feed streams over “mini-structured” solid catalyst beds formed e.g., of channeled honeycomb...
6583260 Functionalized diene monomers and polymers containing functionalized dienes and methods for their preparation  
Functionalized monomers and polymerized functionalized monomers selected from the group consisting of 2-(N,N-dimethylaminomethyl)-1,3-butadiene, 2-(N,N-diethylaminomethyl)-1,3-butadiene,...
6512151 Process for the purification and production of a diolefin hydrocarbon stream  
A selective acetylene hydrogenation process which is able to produce a high quality diolefin having extremely low levels of acetylene over an extended period of time compared with the prior art....
6469223 Selective hydrogenation of dienes  
A process is provided for the selective hydrogenation of dienes from a mixed hydrocarbon stream. The catalyst contains nickel in an amount between approximately 5 and 15 weight percent and,...
6410811 Selective hydrogenation process comprising partial separation of hydrogen by a membrane upstream of a reactive column  
The process of the invention is a process for selective hydrogenation of a hydrocarbon feed containing hydrogen and C 2 + hydrocarbons, characterized in that it comprises at least one step for...
6388162 Diene removal from an olefin feedstock  
The invention pertains to a process of removing dienes from an olefin feedstock. A preferred olefin feedstock is for the production of primary alcohol compositions by skeletal isomerization of the...
6344538 Functionalized diene monomers and polymers containing functionalized dienes and methods for their preparation  
Functionalized monomers and polymerized functionalized monomers selected from the group consisting of 2-(N,N-dimethylaminomethyl)-1,3-butadiene, 2-(N,N-diethylaminomethyl)-1,3-butadiene,...
6297415 Catalytic distillation process  
A catalyst packing which can be produced by vapor deposition and/or sputtering of at least one substance active as catalyst and/or promotor onto woven or knitted fabrics or sheets as support...
6278033 Catalyst and process for purifying streams of materials  
A catalyst which contains, in its active composition, from 0.05 to 1.0% by weight of at least one metal or compound of a metal of the 10th group of the Periodic Table of the Elements and from 0.05...
6255548 Process for selective hydrogenation of unsaturated compounds  
A process for selective hydrogenation of unsaturated compounds such as acetylenic compounds or diolefins is carried out in the presence of a catalyst comprising at least one support, at least one...
6127588 Hydrocarbon hydrogenation catalyst and process  
A supported hydrogenation catalyst composition is disclosed which comprises palladium, an inorganic support such as alumina, and a selectivity enhancer selected from the group consisting of silver,...
6118034 Process for the selective hydrogenation of dienes in reformate flows  
In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40...
6100373 Functionalized diene monomers and polymers containing functionalized dienes and methods for their preparation  
Functionalized diene monomers and polymerized functionalized diene monomers including 2-cyanomethyl-1,3-butadiene, 2-acetoxymethyl-buta-1,3-diene, dimethyl-(2-methylene-but-3-enyl)-amine,...
6096933 Hydrocarbon hydrogenation and catalyst therefor  
A supported hydrogenation catalyst composition is disclosed which comprises a palladium component, at least one alkali metal iodide such as, for example, potassium iodide, and an inorganic support...
6075173 Process for production of isobutene and propylene from hydrocarbon cuts containing four carbon atoms  
The present invention concerns a process for the production of isobutene and propylene by metathesis of an olefinic C 4 cut. The process comprises three successive steps: 1) selective...
5877364 Process for the simultaneous selective hydrogenation of diolefins and nitriles in multiple reactor units  
A process is provided for simultaneous selective hydrogenation of diolefins and nitriles from a hydrocarbon feedstock, wherein hydrogenation is carried out using a catalyst in one reactor zone...
5866734 Hydrogenation process  
In a process for the hydrogenation of multiply unsaturated C 2 -C 8 hydrocarbons, in particular C 2 -C 8 -alkynes and/or C 4 -C 8 -alkynenes and/or C 4 -C 8 -alkadienes in fluids comprising...
5821397 Process for the hydrogenation of diolefins in aromatic-rich hydrocarbons using metallic catalysts impregnated with organic sulphur-containing compounds  
A process is described for the high-efficiency selective hydrogenation of an aromatic hydrocarbon cut which also contains monoolefinic hydrocarbons and polyolefinic and/or acetylenic hydrocarbons...
5817589 Regeneration of catalyst comprising flushing with inert gas followed by flushing with hydrogen  
A process for regenerating a spent hydrogenation catalyst, comprising the steps of providing a catalyst comprising a support material selected from the group consisting of an inorganic...
5698752 Selective hydrogenation process  
A selective hydrogenation of an alkyne in an olefin-containing fluid is provided which comprises contacting the fluid and hydrogen gas with a catalyst in the presence of at least one sulfur...
5679241 Olefin plant recovery system employing catalytic distillation  
The C 2 to C 5 and heavier acetylenes and dienes in a thermally cracked feed stream are hydrogenated without significantly hydrogenating the C 2 and C 3 olefins. Additionally, the C 4 and...
5639926 Process for producing a branched chain olefin by isomerization and transhydrogenation  
A process for producing a branched chain olefin which comprises isomerising and transhydrogenating a hydrocarbon stream containing at least one straight chain paraffin of 4 or more carbon atoms by...
5595634 Process for selective hydrogenation of highly unsaturated compounds and isomerization of olefins in hydrocarbon streams  
A process for treating C 3 to C 12 petroleum fractions, such as a light cracked naphtha to be used as an etherification feed stock in which H 2 S is removed by distillation of at least the C 3 ...
5583274 Alkyne hydrogenation process  
C 2 -C 6 alkynes (preferably acetylene) contained in feeds which also contain sulfur impurities are hydrogenated to the corresponding alkenes in the presence of a supported palladium catalyst...
5510550 Selective acetylene hydrogenation  
A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted at a relatively low temperature (of up to about 60° C.) with a liquid composition...
5417844 Selective hydrogenation of diolefins in steam cracking petrol on catalysts based on a support metal in which an organic compound has been incorporated prior to loading into the reactor  
The invention relates to a process for the selective hydrogenation of diolefins in steam cracking petrol in the presence of a nickel catalyst and is characterized in that prior to the use of the...
5208405 Selective hydrogenation of diolefins  
A process for selectively hydrogenating C 4 -C 10 diolefins to the corresponding monoolefins is carried out with a catalyst comprising (a) nickel metal and/or compound(s), (b) silver metal and/or...
5030779 Hydrogenation catalyst and hydrogenation process wherein said catalyst is used  
A hydrogenation catalyst prepared by combining one or more Group VIII metal compounds with one or more alkylalumoxanes and one or more alkyls or hydrides of a metal selected from the group...
4910356 Acid catalyzed reduction  
Compositions containing sulfuric acid and one or more of certain chalcogen-containing compounds in which the chalcogen compound/H 2 SO 4 molar ratio is below 2 contain the mono-adduct of sulfuric...
4761509 High selectivity process for dehydrogenation of paraffinic hydrocarbons  
An improved process for the catalytic dehydrogenation of paraffinic hydrocarbons is disclosed. Feed paraffinic hydrocarbons are dehydrogenated to yield an olefin containing vapor stream which is...
4727202 Process for the production of catalytically-active metallic glasses  
Catalytically-active metallic glasses containing at least one element from a subgroup of the periodic system and at least one element from a main group of the periodic system. Process for the...
4705906 Selective hydrogenation of acetylene  
Ethylene is produced by the selective hydrogenation of acetylene in the presence of carbon monoxide at a concentration of greater than 1% vol, generally greater than 5% vol, and optionally also...
Matches 1 - 50 out of 113 1 2 3 >