Abstract: Ethylene is oligomerized by reacting ethylene in methanol under oligomerization conditions in contact with a nickel ylide defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.
Abstract: An alpha-olefin is oligomerized in the presence of a three-component catalyst comprising a particulate solid adsorbent having boron trifluoride and water adsorbed on the solid adsorbent. For example, 1-decene is oligomerized to a product predominating in the trimer and tetramer using silica as the solid adsorbent.
Abstract: Propylene is converted to propylene glycol at high selectivity in a process in which ethylbenzene hydroperoxide and water are reacted with propylene in the presence of osmium tetroxide catalyst and a base at a pH of about 14.
Type:
Grant
Filed:
July 28, 1980
Date of Patent:
December 29, 1981
Assignee:
Gulf Research & Development Company
Inventors:
Ching-Yong Wu, Thaddeus P. Kobylinski, John E. Bozik
Abstract: Compounds of the general structural formula, ##STR1## in which R.sup.1 is C.sub.1 to C.sub.4 lower alkyl, cycloalkyl or alkylamino and R.sup.2 is H or lower N-alkylcarbamyl are made from corresponding m-aminophenylacetylenic compounds by conventional methods and are useful as selective herbicides.
Abstract: A suspension containing (A) water and (B) the product resulting from the reaction of (1) coal having a neutral equivalent of about 150 to about 485 with (2) a base. The process for preparing such suspension is also claimed.
Abstract: The present invention provides a multistage process for the removal of tar, water and particulate contaminants from a hot product gas resulting from the in-situ gasification of an underground coal deposit, which comprises passing the hot product gas through a first heat exchange zone in indirect heat exchange relationship with a gasification gas to thereby sufficiently reduce the temperature of the product gas so as to separate the tar present in the product gas and provide a substantially tar-free product gas. Thereafter, the tar-free product gas is withdrawn from the first heat exchange zone and passed through at least one subsequent heat exchange zone in indirect or direct heat exchange relationship with a heat exchange material which has a lower temperature than the product gas. A major portion of the water originally present in the hot product gas is removed in the subsequent heat exchange zone.
Type:
Grant
Filed:
February 11, 1980
Date of Patent:
December 1, 1981
Assignee:
Gulf Research & Development Company
Inventors:
John Freel, John C. Montagna, Seh M. Ryu
Abstract: Ammonium hydroxide is used to remove nickel ylide residue from an oligomerization reaction product obtained by contacting ethylene with a nickel ylide catalyst under oligomerization conditions. The oligomerization reaction product is contacted with ammonium hydroxide to obtain a product composed of two layers, an upper layer containing normal alpha olefins and a lower layer containing nickel ylide residue. The two layers are then separated from each other to recover the desired normal alpha olefins.
Abstract: The combustible component of a gas stream of low heating value is combusted using less than a stoichiometric amount of oxygen in the presence of an oxygenation catalyst and the heat energy in the combusted gas is utilized, for example, by expansion in a gas turbine.
Type:
Grant
Filed:
December 7, 1978
Date of Patent:
November 10, 1981
Assignee:
Gulf Research & Development Company
Inventors:
Ajay M. Madgavkar, Roger F. Vogel, Harold E. Swift
Abstract: In the underground gasification of a swelling coal the high gas-flow link between the injection and the production wells is produced by introducing hot air into the injection well at a pressure sufficient to fracture the coal. The bulk permeability of the coal proximate to the link is increased and the plugging of the link during the subsequent in situ combustion and gasification procedure is suppressed by continuing the injection of the hot air, heated to a temperature below the softening point of the coal, into the injection well, through the link to the production well without combustion of the coal.
Type:
Grant
Filed:
July 21, 1980
Date of Patent:
November 10, 1981
Assignee:
Gulf Research & Development Company
Inventors:
Shirley C. Tsai, Richard H. Graham, Robin R. Oder
Abstract: In the underground gasification of a swelling coal the bulk permeability of the coal proximate to the linkage between the injection and the production holes is increased and the plugging of the linkage during the in situ combustion and gasification procedure is suppressed by subjecting this coal proximate to the linkage between the injection and production holes to a stream of air heated to a temperature below the softening point of the coal prior to the in situ combustion and gasification procedure.
Type:
Grant
Filed:
July 21, 1980
Date of Patent:
October 27, 1981
Assignee:
Gulf Research & Development Company
Inventors:
Shirley C. Tsai, Richard H. Graham, Robin R. Oder
Abstract: A process for the manufacture of acrylonitrile wherein a gaseous feed comprising propylene, ammonia and oxygen is passed over a novel catalyst containing critical amounts of (1) uranium, (2) antimony, (3) an element from Group IV B of the Periodic Table and (4) molybdenum and/or vanadium.
Abstract: An aromatic hydrocarbon is alkylated with an alpha olefin containing three to 10 carbon atoms, or more, by intimately contacting the alpha olefin and the aromatic hydrocarbon with a catalyst produced by contacting (a) a refractory metal oxide/silica support such as alumina/silica wherein the silica content of the support is from two to 95 weight percent and the metal oxide content of the support is from five to 98 percent with (b) a tris(cyclopentadienyl)trinickel dicarbonyl. This process results in the production of significant quantities of alkylated aromatic hydrocarbons.
Abstract: A process for preparing alkyldimethylamines which comprises passing through a fixed bed, containing a copper catalyst, optionally chromium oxide, and an oxide of a Group I metal, selected amounts of dimethylamine and an alcohol or mixtures of alcohols.
Type:
Grant
Filed:
December 31, 1979
Date of Patent:
October 6, 1981
Assignees:
Gulf Research & Development Company, Kewanee Industries
Inventors:
Harold E. Swift, Robert A. Innes, Phillip Adams
Abstract: Ethylene is oligomerized by intimately contacting ethylene with a metal modified catalyst. The catalyst is produced by contacting (a) a refractory metal oxide/silica support, such as alumina/silica wherein the silica content of the support is from about 2 to about 95 weight percent and the metal oxide content of the support is from about 5 to about 98 percent with (b) a solution of a basic metal and then (c) contacting the resulting metal modified support with a tris(cyclopentadienyl)trinickel dicarbonyl.
Abstract: Ethylene is oligomerized by contacting ethylene under oligomerization conditions with a nickel ylide defined by the following Formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7 and R.sub.
Abstract: An alpha olefin containing three to 10 carbon atoms, or higher, is oligomerized by intimately contacting the alpha olefin, e.g., in a non-aromatic solvent, with a catalyst produced by contacting (a) a refractory metal oxide/silica support such as alumina/silica wherein the silica content of the support is from about 2 to about 95 weight percent and the metal oxide content of the support is from about 5 to about 98 percent with (b) a tris(cyclopentadienyl)trinickel dicarbonyl. This process is characterized by a relatively high reaction rate at moderate temperatures and pressures and results in the production of significant quantities of dimers, trimers and tetramers.
Abstract: Ethylene is oligomerized by contacting ethylene with a catalyst produced by contacting (a) a refractory metal oxide/silica support such as alumina/silica wherein the silica content of the support is from about 2 to about 95 weight percent and the metal oxide content of the support is from about 5 to about 98 percent with (b) a tris(cyclopentadienyl)trinickel dicarbony. This process is characterized by a relatively high reaction rate at moderate temperatures and pressures and results in the production of relatively high proportions of desirable trimer, tetramer, pentamer, and higher olefinic products.
Abstract: A lube oil feedstock is subjected to hydrotreating in the presence of hydrogen and a fluorine-promoted catalyst comprising nickel and molybdenum on a support wherein the nickel and fluorine are derived from an ammoniacal solution of nickel fluoride. The catalyst can be prepared by contacting the support with an alkaline impregnating solution consisting essentially of NH.sub.4.sup.+, Ni.sup.++, MO.sup.+VI and F.sup.-, said Ni.sup.++ and F.sup.- being supplied from nickel fluoride, in a single step employing the incipient wetness technique. The impregnated support is thereafter heated to drive off the alkaline component of the solution and thereby deposit the fluorine, nickel and molybdenum on the support.
Type:
Grant
Filed:
September 4, 1979
Date of Patent:
August 25, 1981
Assignee:
Gulf Research & Development Company
Inventors:
John J. Stanulonis, Joseph A. Tabacek, Roger F. Vogel
Abstract: An aqueous, alkaline impregnating solution for the one-step impregnation of fluorine, nickel and molybdenum onto a catalyst support is provided by admixing nickel fluoride, preferably an ammoniacal solution of nickel fluoride and an ammoniacal solution of Mo.sup.+VI to form a compatible impregnating solution consisting essentially of NH.sub.4.sup.+, Ni.sup.++, Mo.sup.+VI and F.sup.-. Nickel and fluorine ions are present in a ratio of substantially 1 to 2. The use of nickel fluoride in a predissolved ammoniacal solution for admixture with the ammoniacal solution of the Mo.sup.+VI renders the resulting impregnating solution highly suitable for impregnation of fluorine, nickel and molybdenum onto a catalyst support by the incipient wetness technique in one-step. The catalyst produced using the present impregnating solution is highly active for hydrotreating lubricating oils.
Type:
Grant
Filed:
September 4, 1979
Date of Patent:
August 25, 1981
Assignee:
Gulf Research & Development Company
Inventors:
John J. Stanulonis, Joseph A. Tabacek, Roger F. Vogel