Abstract: The present invention discloses synthesis gas catalysts, and methods for making such catalysts, that are active for promoting partial oxidation of light hydrocarbons to CO and H2. The catalysts comprise a support and an active metal. The catalysts may further comprise a promoter and halide or a rare earth oxyhalide. The present invention further discloses a method for producing synthesis gas by net partial oxidation of light hydrocarbons by contacting O2 and light hydrocarbons in the presence of a synthesis gas catalyst as previously described. The present invention also describes a method for extending the life of a synthesis gas catalyst by contacting the catalyst with a halide. A method for making middle distillates from light hydrocarbons by partial oxidation of light hydrocarbons over a synthesis gas catalyst as previously described and Fischer-Tropsch reaction is also disclosed.
Type:
Application
Filed:
January 23, 2003
Publication date:
July 29, 2004
Applicant:
ConocoPhillips Company
Inventors:
Tianyan Niu, Kevin L. Coy, David M. Minahan, Harold A. Wright
Abstract: A silver catalyst for ethylene oxidation to ethylene oxide is provided containing a promoter combination consisting of critical amounts of an alkali metal component and a sulfur component, the catalyst being essentially free of rhenium and transition metal components; optionally the catalyst contains a fluorine component.
Type:
Grant
Filed:
November 13, 2001
Date of Patent:
July 13, 2004
Assignee:
Scientific Design Co., Ltd.
Inventors:
Nabil Rizkalla, Serguei Pak, Andrew D. Schmitz
Abstract: An object of the present invention is to provide a photocatalytic powder containing titanium dioxide fine particles containing an anionically active substance, where the electrokinetic potential of the fine particle is from about −100 to 0 mV in an aqueous environment at pH 5. Another object of the present invention is to provide a photocatalytic slurry containing the powder, and a polymer composition, a coating agent, a photocatalytic functional molded article and a photocatalytic functional structure using the powder.
Abstract: The invention relates to a process for the preparation of an epoxidation catalyst, which process involves impregnating a silicon containing carrier with a gas stream consisting of titanium halide. The invention also relates to a process for the preparation of alkylene oxide using such catalyst.
Type:
Application
Filed:
November 24, 2003
Publication date:
June 17, 2004
Inventors:
Johannes Petrus Van Der Linden, Eduardus Petrus Simon Schouten
Abstract: Novel active catalyst compositions comprising a compound or mixture of compounds represented by the formula
SbFXmY4−m
a complex of such a compound or mixture of such compounds being represented by the formula
R.SbFXmY4−m
or a combination of such compounds and complexes where in each formula, X is an anionic moiety, Y is an anion or anions resulting from the deprotonation of an active hydrogen-containing compound(s), m is 0 to 3 and R is one or more active hydrogen containing compound acting as molecules of solvation. The catalyst compositions are useful to promote alkoxylation reactions.
Type:
Grant
Filed:
July 26, 2002
Date of Patent:
May 11, 2004
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation
Inventors:
Thomas Craig Bedard, Brian Terry Keen, Bradley Allen Sleadd, Mark R. Bassett
Abstract: Electrocatalyst powders and methods for producing electrocatalyst powders, such as carbon composite electrocatalyst powders. The powders have a well-controlled microstructure and morphology. The method includes forming the particles from an aerosol of precursors by heating the aerosol to a relatively low temperature, such as not greater than about 400° C.
Type:
Application
Filed:
October 3, 2003
Publication date:
April 15, 2004
Inventors:
Toivo T. Kodas, Mark J. Hampden-Smith, Plamen Atanassov, Klaus Kunze, Paul Napolitano, Rimple Bhatia, David Dericotte, Paolina Atanassova
Abstract: Catalyst powders from nanoscale powders dispersed on coarser carrier powders. The composition of the dispersed fine powders may be oxides, carbides, nitrides, borides, chalcogenides, metals, and alloys. Nano-dispersed submicron powders and nano-dispersed nanopowders are discussed.
Abstract: Hydrothermally synthesized catalysts comprising a mixed metal oxide are utilized to produce unsaturated carboxylic acids by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, in the presence thereof; or to produce unsaturated nitrites by the vapor phase oxidation of an alkane, or a mixture of an alkane and an alkene, and ammonia in the presence thereof.
Abstract: The present invention concerns an addition compound of a carboxylic acid and a rare earth or gallium halide or a rare earth or gallium halogenocarboxylate of the same acid. This compound is obtained by a process in which a rare earth or gallium carboxylate is reacted with HX, X representing a halogen, in a solvent selected from alkanes, cycloalkanes and aromatic solvents and mixtures thereof, the reaction being carried out with an X/rare earth or gallium atomic ratio of less than 3 when preparing a halogenocarboxylate.
Abstract: The invention concerns a homogeneous bed of particles of a catalyst, said catalyst comprising at least one amorphous matrix, at least one noble metal, at least one additional metal M and at least one halogen, and in which, for a catalyst particle,
Abstract: A mixed metal oxide, which may be an orthorhombic phase material, is improved as a catalyst for the production of unsaturated carboxylic acids, or unsaturated nitrites, from alkanes, or mixtures of alkanes and alkenes, by contact with a liquid contacting member selected from the group consisting of organic acids, alcohols, inorganic acids and hydrogen peroxide.
Abstract: A catalyst composition comprising palladium, silver and a support material (preferably alumina) is contacted with a liquid composition comprising an iodide component such as ammonium iodide, and the catalyst is then calcined. An improved process for hydrogenation, especially selectively hydrogenating acetylene (to ethylene), using this improved catalyst composition with improved conversion and deactivation.
Type:
Application
Filed:
June 9, 2003
Publication date:
February 5, 2004
Applicant:
Chevron Phillips Chemical Company
Inventors:
Tin-Tack Peter Cheung, Joseph J. Bergmeister
Abstract: A catalytic composition useful for cracking and reducing the viscosity of heavy hydrocarbons. The catalytic composition comprises Portland cement, a volcanic ash component, titanium dioxide, and a transition metal salt. Optionally, a hydrogen source is added to the catalytic composition.
Abstract: Activator solid support for metallocenes as catalysts in the polymerization of olefins, characterized in that it consists of a group of support particles for a solid catalytic component, which are formed from at least one porous mineral oxide, the said particles having been modified in order to carry, on the surface, aluminium and/or magnesium Lewis-acid sites of formula: 1
Type:
Application
Filed:
April 1, 2003
Publication date:
January 22, 2004
Inventors:
Thierry Saudemont, Roger Spitz, Jean-Pierre Broyer, Jean Malinge, Nathalie Verdel
Abstract: A method for manufacturing ionic liquid compositions by use of a two-step process which includes the contacting, under first reaction conditions, an amine compound with a hydrogen halide that is preferably in the gaseous form to provide a first reaction mixture. The first reaction mixture is then contacted, under second reaction conditions, with a metal halide compound to form the ionic liquid end-product.
Type:
Application
Filed:
April 22, 2003
Publication date:
January 8, 2004
Inventors:
Kenneth D. Hope, Donald A. Stern, Donald W. Twomey
Abstract: Ferrocenaldehyde or ferrocenyl methyl ketone and allyl bromide are reacted in an ether solvent and in the presence of magnesium metal as a catalyst. The liquid portion of the reaction mixture is introduced into a silica gel column, wherein the weak acidity of the silica gel is able to dehydrate the reaction intermediate 1-ferrocenyl-3-buten-1-ol product. The column is eluted with n-hexane, and after evaporating the solvent from the eluate collected, a purified ferrocenyl-1,3-butadiene product is obtained.
Type:
Grant
Filed:
May 6, 2003
Date of Patent:
December 16, 2003
Assignee:
Chung-Shan Institute of Science & Technology
Abstract: This invention relates to a process for depositing one or more catalytically reactive metals on a carrier, said process comprising selecting a carrier and depositing a catalytically effective amount of one or more catalytically reactive metals on the carrier, the deposition effected by submersing the carrier in an impregnation solution wherein the hydrogen ion activity of the impregnation solution has been lowered. The invention further relates to catalysts made from the process.
Abstract: Bismuth- and phosphorus-containing catalyst supports, naphtha reforming catalysts made from such supports, methods of making both support and catalyst, and a naphtha reforming process using such catalysts.
Abstract: Bismuth- and phosphorus-containing naphtha reforming catalysts, methods of making such catalysts, and a naphtha reforming process using such catalysts.
Abstract: Catalysts which are useful in the fluorination of halogenated hydrocarbons by HF in the gas phase are obtained by simple impregnation of a bulk chromium oxide with a solution of a nickel derivative, the chromium oxide used exhibiting a BET specific surface of greater than 150 m2/g and a pore volume of greater than 0.15 ml/g.
Abstract: A catalyst composition comprising an alumina carrier, a Group VIII noble metal, and a halogen compound wherein the catalyst composition has total pore volume of more than 0.48 ml/g and wherein at least 50% of this total pore volume resides in pores with a diameter smaller than 12 nm. This catalyst composition has a higher activity in isomerization reactions, per gram of catalyst and per gram of Group VIII noble metal, than prior art catalyst compositions.
Abstract: A novel catalyst for use in dehydrogenation of saturated hydrocarbons to unsaturated hydrocarbons and a method for its preparation is disclosed. Said catalyst comprises a composite incorporated within its spatial geometry on a percentage by weight basis, with a uniform concentration gradient, the following active elements:
from 0.1 to 5.0% of a noble metal;
from 0.1 to 5.0% of a metal of Group IV A;
from 0.1 to 6.0% of a metal Group III A;
from 0.1 to 10.0% of an alkali or alkaline earth metal element;
from 0.01 to 10.0% of a halogen; and
from 0.1 to 5.0% of a metal Group VIII selected from Fe, Co and Ni provided on a high surface area meso or macroporous support. The the high surface mesoporous support comprises a spheroidal gamma alumina support with a diameter of 1.4 to 2.0 mm, a surface area in the range of from 150 to 220 m2/g, with bimodal narrow pore size distribution, water adsorption capacity in the range of from 1.4 to 2.
Type:
Grant
Filed:
April 10, 2001
Date of Patent:
October 21, 2003
Assignee:
Indian Petrochemicals Corporation Limited
Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and a fluoride additive.
Abstract: The invention concerns the use of a solid basic catalyst comprising a hydrotalcite structure wherein part at least of the compensating anions are fluoride anions F for producing Knoevenagel or Michael condensation reactions. The invention also concerns novel solid basic catalysts comprising a hydrotalcite structure characterised by a Mg/Al molar ratio ranging between 2.5 and 3.8 wherein at least part of the compensating anions are fluoride anions F, and methods for preparing said novel catalysts.
Abstract: Activator solid support for metallocenes as catalysts in the polymerization of olefins, characterized in that it consists of a group of support particles for a solid catalytic component, which are formed from at least one porous mineral oxide, the said particles having been modified in order to carry, on the surface, aluminium and/or magnesium Lewis-acid sites of formula:
or —Mg—F, the
groups coming from a functionalization agent having reacted with —OH radicals carried by the base particles of the support, the functionalization reaction having been followed by a fluorination reaction. The catalytic system according to the invention comprises (a) a metallocene catalyst, which has, if required, been subjected to a prealkylation treatment; (b) a cocatalyst; and (c) an activator solid support for metallocene, as defined above, it being possible for the cocatalyst (b) to be absent if the metallocene catalyst (a) has been prealkylated.
Type:
Grant
Filed:
April 2, 2001
Date of Patent:
August 12, 2003
Assignee:
Elf Atochem, S.A.
Inventors:
Thierry Saudemont, Roger Spitz, Jean-Pierre Broyer, Jean Malinge, Nathalie Verdel
Abstract: The present invention relates to a new catalyst system for fluorous biphasic catalysis processes which comprises functionalized polymeric beads, monodisperse SiO2 or SiO2 flakes associated with the catalyst. These functionalized particles are used as a support for catalysts in fluorous biphasic catalysis (FBC).
Type:
Application
Filed:
January 9, 2003
Publication date:
August 7, 2003
Inventors:
Julian F.S. Vaughan, Martin G. Pellatt, James Sherrington, Eric George Hope
Abstract: Catalysts for exothermic reactions conducted in a fixed bed, comprising an inert diluent constituted by metal granules in which the metal has a thermal conductivity of more than 0.5 W/cm/K, particularly catalysts for the oxychlorination of ethylene to 1,2-dichloroethane.
Abstract: There is provided a catalyst carrier comprising a refractory inorganic material having a sodium solubilization rate no greater than 5 ppmw/5 minutes. There is further a catalyst comprising a refractory inorganic material carrier having a sodium solubilization rate no greater than 5 ppmw/5 minutes; and one or more catalytically reactive metals deposited on said carrier. There is also provided a catalyst suitable for the vapor phase production of alkylene oxide from olefins and oxygen comprising an alumina-based carrier having a sodium solubilization rate no greater than 5 ppmw/5 minutes; and catalytically reactive silver deposited on said carrier.
Abstract: Provided is a selective hydrogenation process for producing aminonitriles by contacting the corresponding dinitriles with a hydrogen-containing fluid in the presence of a hydrogenation catalyst, a solvent and a fluoride additive.
Abstract: A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes an effective amount of at least one Group 8, 9, or 10 metal source; an effective amount of at least one bromide composition; an effective amount of at least one activating organic solvent; an effective amount of a combination of inorganic co-catalysts comprising at least one titanium source and at least one copper source; and an effective amount of at least one base.
Type:
Grant
Filed:
November 30, 2000
Date of Patent:
May 20, 2003
Assignee:
General Electric Company
Inventors:
Kirill Vladimirovich Shalyaev, Grigorii Lev Soloveichik, Bruce Fletcher Johnson
Abstract: A process for the preparation of a ceramic foam supporting one or more catalytically active components or precursors thereof, which component is active in a form other than an inorganic oxide, the process comprising impregnation of the foam with an impregnating phase comprising the catalytically active component or a precursor thereof and drying, wherein the impregnating phase has a viscosity greater than 1 cps, wherein drying is performed without substantial prior draining of impregnating phase from the ceramic foam, and wherein the catalytically active component or precursor thereof is present throughout the process in one or more forms other than the inorganic oxide thereof. The ceramic foams prepared by this process find use in catalytic conversion processes, in particular the catalytic partial oxidation of a hydrocarbon feed.
Type:
Grant
Filed:
November 26, 1996
Date of Patent:
May 13, 2003
Assignee:
Shell Oil Company
Inventors:
Peter William Lednor, Katherine Searcy-Roberts
Abstract: A method for producing chlorine dioxide by activating zeolite crystals (which have been impregnated with metal chlorite such as sodium chlorite, and optionally also a water-retaining substance such as magnesium sulfate, potassium chloride, potassium hydroxide, or calcium chloride) with excess protons, or activating an aqueous solution of metal chlorite and such a water-retaining substance with excess protons. Proton generating species useful for the activation are acids such as acetic, phosphoric, and citric acid, and metal salts such as ferric chloride, ferric sulfate, ZnSO4, ZnCl2, CoSO4, CoCl2, MnSO4, MnCl2, CuSO4, CuCl2, and MgSO4. The activation can be performed by causing fluid to flow through a bed of zeolite crystals impregnated with calcium chloride (or other water-retaining substance) and sodium chlorite, and a bed of zeolite crystals impregnated with a proton generating species. The two beds can be physically mixed together or the fluid can flow sequentially through separate beds.
Abstract: A catalyst composition that is the combination of or the reaction product of ingredients comprising (a) (i) a halogen-containing iron compound or (ii) an iron-containing compound and a halogen-containing compound, (b) an &agr;-acylphosphonate diester, and (c) an organoaluminum compound.
Abstract: Raney copper, which is doped (promoted) with an effective quantity of a doping (promoting) agent selected from the group boric acid, onium fluorides, salts of fluorine complex anions, and heteropoly acids, represents an outstanding oxidation catalyst for amine-group-containing primary amines to carboxylic acids.
Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, lower alkyl alcohol generating compounds, such as ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process. The catalyst includes a solid component having a catalytically effective amount of iridium and tin which are associated with a solid catalyst support material and a vaporous halide component.
Type:
Application
Filed:
June 20, 2001
Publication date:
March 20, 2003
Inventors:
Joseph Zoeller, Andy Singleton, Gerald Tustin, Donald Carver
Abstract: This invention relates to a composition comprising antimony trifluoride and silica, a method for the preparation of said composition and use of said composition as a catalyst in a process for the oxidation of cyclohexanone to &egr;-caprolactone.
Type:
Grant
Filed:
January 30, 2001
Date of Patent:
March 11, 2003
Assignee:
Solvay (Societe Anonyme)
Inventors:
Michael C. Rocca, Graham Carr, Arnold B. Lambert, Duncan J. MacQuarrie, James H. Clark
Abstract: Active fluoride catalysts that are useful in producing electrophilic fluorination agents; especially useful in producing BDM from the reaction of fluorine with carbon dioxide and FTM from the reaction of fluorine with carbonyl fluoride. The fluoride catalyst comprises a mixture of two or more fluorides selected from a transition metal fluoride, an alkali metal fluoride and/or an alkaline earth metal fluoride. Alternately, the fluoride catalyst is one or more fluorides, such as alkali metal fluorides, alkaline earth metal fluorides, and/or transition metal fluorides, deposited on an inert support.
Type:
Grant
Filed:
February 15, 2001
Date of Patent:
February 25, 2003
Assignee:
Air Products and Chemicals, Inc.
Inventors:
Robert George Syvret, Philip Bruce Henderson, Donald Elson Fowler, Beth Ann Campion, Frederick Carl Wilheim
Abstract: A carbonylation catalyst useful for producing esters and carboxylic acids from reactants including lower alkyl alcohols, lower alkyl alcohol generating compositions such as ether and ester derivatives of the alcohols, and mixtures thereof in a vapor phase carbonylation process, said catalyst includes a solid component having a catalytically effective amount of platinum and tin associated with a solid catalyst support material and a vaporous halide promoter component.
Type:
Application
Filed:
June 19, 2001
Publication date:
February 13, 2003
Inventors:
Joseph Zoeller, Andy Singleton, Gerald Tustin, Donald Carver
Abstract: The present invention is directed to a halogen-containing catalyst which contains one or more halogen components and in which the halogen amount distribution in the catalyst is uniform, and a process for preparing a halogen-containing catalyst which comprises the steps of supporting one or more halogen components on an L type zeolite, and then drying it at a water evaporation rate of 15% by weight/hour or less. According to the present invention, there can be provided the catalyst in which the halogen amount distribution in the catalyst is uniform, so that a cracking activity can be reduced, and the process for preparing the catalyst.
Type:
Grant
Filed:
January 4, 2000
Date of Patent:
February 11, 2003
Assignees:
Idemitsu Kosan Co., Ltd., Chevron Phillips Chemical Company
Abstract: A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes a catalytic amount of an inorganic co-catalyst containing titanium. In various alternative embodiments, the carbonylation catalyst system can include an effective amount of a palladium source and an effective amount of a halide composition. Further alternative embodiments can include catalytic amounts of various inorganic co-catalyst combinations.
Type:
Grant
Filed:
February 12, 2001
Date of Patent:
February 4, 2003
Assignee:
General Electric Company
Inventors:
James Lawrence Spivack, James Norman Cawse, Donald Wayne Whisenhunt, Jr., Bruce Fletcher Johnson, Grigorii Lev Soloveichik
Abstract: A solid supported catalyst suitable for the vapor phase carbonylation of lower aliphatic alcohols, ethers, ester, and ester-alcohol mixtures, and desirably, methanol, to produce carboxylic acid, esters and mixtures thereof. The solid supported catalyst includes an effective amount of gold associated with a solid support material in the presence of a halide promoter. Desirably, the support material is selected from carbon, activated carbon, pumice, alumina, silica, silica-alumina, magnesia, diatomaceous earth, bauxite, titania, zirconia, clay, magnesium silicate, silicon carbide, zeolites, ceramics and combinations thereof.
Type:
Grant
Filed:
May 22, 2000
Date of Patent:
January 21, 2003
Assignee:
Eastman Chemical Company
Inventors:
Joseph Robert Zoeller, Andy Hugh Singleton, Gerald Charles Tustin, Donald Lee Carver
Abstract: A method of preparing pentafluoroethane wherein chlorine-containing carbon compounds are fluorinated in the presence of chromium catalysts that are in an amorphous state and wherein the main component is chromium compounds with the addition of at least one metal element selected from the group composed of indium, gallium, cobalt, nickel, zinc and aluminum and the average valence of the chromium in said chromium compounds is not less than +3.5 but not more than +5.0. And said chromium catalysts and a preparation method thereof.
A method of preparing pentafluoroethane wherein the total yield of chlorofluoroethane by-products can be decreased without significantly deteriorating the generation activity of the pentafluoroethane and compounds which can be recycled in the reaction system. And to provide catalysts for this fluorination and a preparation method thereof.
Abstract: The present invention relates a method for preparing nanometer electrocatalyst for proton exchange membrane fuel cells, comprising the steps of: 1) adding in water a platinum halogen compound or a mixture of a platinum halogen compound and a ruthenium halogen compound, and active carbon, the amount of noble metal in the solution is 0.5-10 g/L, and the amount of active carbon is 0.05-2 g/L; 2) adjusting the pH of the solution to 2.5-10.5 with potassium hydroxide and/or ammonium hydroxide; 3) adding dropwise a reducing agent to an amount of 2.5 to 5 times in excess of that of the noble metal in moles, and allowing the reduction reaction to proceed; 4) filtering off the liquid and washing the remains; and 6) drying the remains. The catalysts prepared by the present invention have uniform particle sizes in the range of 4±0.5 nm, and superior electrochemical properties.
Abstract: Active fluoride catalysts that are useful in producing electrophilic fluorination agents; especially useful in producing BDM from the reaction of fluorine with carbon dioxide and FTM from the reaction of fluorine with carbonyl fluoride. The fluoride catalyst comprises a mixture of two or more fluorides selected from a transition metal fluoride, an alkali metal fluoride and/or an alkaline earth metal fluoride. Alternately, the fluoride catalyst is one or more fluorides, such as alkali metal fluorides, alkaline earth metal fluorides, and/or transition metal fluorides, deposited on an inert support.
Type:
Application
Filed:
February 15, 2001
Publication date:
October 10, 2002
Inventors:
Robert George Syvret, Philip Bruce Henderson, Donald Elson Fowler, Beth Ann Campion, Frederick Carl Wilhelm
Abstract: Novel active catalyst compositions comprising a compound or mixture of compounds represented by the formula
SbFXmY4−m
a complex of such a compound or mixture of such compounds being represented by the formula
R·SbFXmY4−m
or a combination of such compounds and complexes where in each formula, X is an anionic moiety, Y is an anion or anions resulting from the deprotonation of an active hydrogen-containing compound(s), m is 0 to 3 and R is one or more active hydrogen containing compound acting as molecules of solvation. The catalyst compositions are useful to promote alkoxylation reactions.
Type:
Grant
Filed:
November 18, 1999
Date of Patent:
September 24, 2002
Assignee:
Union Carbide Chemicals & Plastics Technology
Corporation
Inventors:
Thomas Craig Bedard, Brian Terry Keen, Bradley Allen Sleadd
Abstract: A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbonylation catalyst system that includes an effective amount of at least one Group 8, 9, or 10 metal source; an effective amount of at least one bromide composition; an effective amount of at least one activating organic solvent; an effective amount of a combination of inorganic co-catalysts comprising at least one titanium source and at least one copper source; and an effective amount of at least one base.
Type:
Application
Filed:
November 30, 2000
Publication date:
July 25, 2002
Applicant:
General Electric Company
Inventors:
Kirill Vladimirovich Shalyaev, Grigorii Lev Soloveichik, Bruce Fletcher Johnson