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| Number | Title | Issue Date |
| 5191138 | Process for oxidative conversion of methane to higher hydrocarbons using metal sulfide oxidizing agent There is provided a process for converting methane to hydrocarbons having at least two carbon atoms (i.e. higher hydrocarbons). The process involves oxidizing methane with a metal sulfide oxidizing agent. After this conversion of methane, the reduced meta... | 03/02/1993 |
| 5191137 | Molecular sieves coated with non-oxide ceramics for toluene disproportionation There is provided a molecular sieve coated with a non-oxide ceramic. The molecular sieve may be a zeolite, such as ZSM-5, and the ceramic coating may be, e.g., boron nitride. The coated molecular sieve may be prepared by contacting the molecular sieve wit... | 03/02/1993 |
| 5183561 | Demetallation of hydrocarbon feedstocks with a synthetic mesoporous crystalline material There is provided a process for demetallizing hydrocarbon feedstocks, such as resids or shale oil. The process uses a catalyst comprising at least one hydrogenation metal, such as nickel and molybdenum, and an ultra-large pore oxide material. This ultra-l... | 02/02/1993 |
| 5183559 | Rare earth exchanged layered silicate catalysts There is provided a catalyst comprising a layered silicate, such as magadiite, containing interspathic polymeric silica which serves to prop open the layers. The catalyst further comprises rare earth cations which are exchanged with other cations in the s... | 02/02/1993 |
| 5183790 | Use of ZSM-57 in catalytic cracking for gasoline octane improvement and co-production of light olefins The catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased light olefin content is carried out employing a cracking catalyst composition containing both a large port crystalline zeolite component and a ZSM-57... | 02/02/1993 |
| 5182090 | Synthesis of large crystal size ZSM-5 There is provided a method for making large crystal size ZSM-5. This method involves the use of two organic cations, specifically tetrapropylammonium (TPA) and tetramethylammonium (TMA) cations, in the reaction mixture. This method further involves the us... | 01/26/1993 |
| 5173281 | Synthesis of a synthetic porous crystalline material There is provided a method for preparing a synthetic crystalline material from a reaction mixture including an organic directing agent selected from 1,4-diazacycloheptane (i.e. homopiperazine), azacyclooctane (i.e. heptamethyleneimine), aminocyclohexane (... | 12/22/1992 |
| 5162283 | Highly porous amorphous titania and titania/silica phases There is provided a highly porous amorphous titania or titania/silica material. The material may be prepared by gelling a reaction mixture comprising hydrolyzable titanium and optionally, hydrolyzable silicon compounds, such as titanium diisopropoxide (2,... | 11/10/1992 |
| 5160500 | Zeolite synthesis using an alcohol or like molecules There is provided a method for preparing a zeolite other than ZSM-5 from a reaction mixture comprising a mixed organic directing agent which is a combination of (a) an organic nitrogen containing compound such as an amine or a quaternary ammonium compound... | 11/03/1992 |
| 5157187 | Hydroisomerization process for pour point reduction of long chain alkyl aromatic compounds There is provided a method for reducing the pour point of an alkyl aromatic lube base stock by hydroisomerizing alkyl side groups on alkyl aromatic compounds. The alkyl aromatic, compounds may be alkylated naphthalenes. The hydroisomerization reaction may... | 10/20/1992 |
| 5157191 | Modified crystalline aluminosilicate zeolite catalyst and its use in the production of lubes of high viscosity index The catalytic activity of a crystalline aluminosilicate zeolite having a Constraint Index of from about 1 to about 12 for a variety of hydrocarbon conversions including the oligomerization of olefins to provide high viscosity index lubes is significantly ... | 10/20/1992 |
| 5155076 | Vacancy titanates intercalated with cationic hydroxy aluminum complexes There is provided a vacancy titanate intercalated with a cationic hydroxy aluminum complex, such as Keggin ion. A method for making this material and a process for using this material as a catalyst are also provided.... | 10/13/1992 |
| 5149516 | Partial oxidation of methane over perovskite catalyst There is provided a process for the partial oxidation of methane to produce a product including carbon monoxide and hydrogen. The process involves contacting a source of methane and a source of oxygen with a perovskite catalyst, such as LaCoO3.... | 09/22/1992 |
| 5137861 | Catalyst comprising a hydrogenation metal and a delaminated layered silicate There is provided a catalyst comprising at least one hydrogenation metal, such as Ni and Mo, supported on a delaminated layered silicate, such as kenyaite, which has been swollen and calcined. There is also provided a method for making this catalyst. Ther... | 08/11/1992 |
| 5137707 | Removal of organic from pillared layered materials by acid treatment There is provided a method for the removal of residual organic swelling agent from pillared layered materials by treating such materials with acid.... | 08/11/1992 |
| 5120692 | Molecular sieves coated with non-oxide ceramics There is provided a molecular sieve coated with a non-oxide ceramic. The molecular sieve may be a zeolite, such as ZSM-5, and the ceramic coating may be, e.g., boron nitride. The coated molecular sieve may be prepared by contacting the molecular sieve wit... | 06/09/1992 |
| 5105044 | Catalyst and process for upgrading methane to higher hydrocarbons There is provided a catalyst and a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a spinel oxide, such as MgMn2 O4 | 04/14/1992 |
| 5105042 | Sulfated layered titanium oxide catalysts in process for preparing long chain alkyl aromatic compounds There is provided a sulfated layered titanium oxide catalyst. Relatively long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively long chain alkylating agent under alkylation reaction conditions in ... | 04/14/1992 |
| 5098555 | Use of SZM-57 in catalytic cracking for gasoline octane improvement and co-production of light olefins The catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased light olefin content is carried out employing a cracking catalyst composition containing both a large pore crystalline zeolite component and a ZSM-57... | 03/24/1992 |
| 5080878 | Modified crystalline aluminosilicate zeolite catalyst and its use in the production of lubes of high viscosity index The catalytic activity of a crystalline aluminosilicate zeolite having a Constraint Index of from about 1 to about 12 for a variety of hydrocarbon conversions including the oligomerization of olefins to provide high viscosity index lubes is significantly ... | 01/14/1992 |
| 5077445 | Liquid-phase alkylbenzene synthesis using hydrated catalyst There is provided a process for the liquid-phase synthesis of an alkylbenzene, such as ethylbenzene, using a particular MCM-22 zeolite catalyst which has been hydrated with liquid water.... | 12/31/1991 |
| 5072031 | Layered divalent metal phosphates containing pendent substituent groups and their preparation Layered divalent metal pentavalent metallate, M(HAO4)x (RAO3)y (Z)z wherein M is divalent metal, A is a pentavalent metal, e.g. phosphorus, R is a substituent group other than H or OH, e.g., phenyl, c... | 12/10/1991 |
| 5068486 | Process for direct oxidative conversion of methane to higher hydrocarbons at high pressure and moderate temperature There is provided a process for converting methane to hydrocarbons having at least two carbon atoms. The process involves contacting methane with an oxidizing agent, such as oxygen, at a relatively moderate temperature of less than about 700° C. and a re... | 11/26/1991 |
| 5063038 | Zeolite synthesis using an alcohol or like molecule There is provided a method for preparing a zeolite other than ZSM-5 from a reaction mixture comprising a mixed organic directing agent which is a combination of (a) an organic nitrogen containing compound such as an amine or a quaternary ammonium compound... | 11/05/1991 |
| 5057640 | Propylene oligomerization over silica modified zeolites There is provided a process for oligomerizing propylene by contacting propylene with silica modified zeolites. The modification of the zeolite with silica results in a product which is enriched in hydrocarbons falling within the boiling range of jet fuel ... | 10/15/1991 |
| 5053576 | Process for upgrading methane to higher hydrocarbons There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is a ZnZSM-5 catalyst. This catalyst may be prepared by ion exch... | 10/01/1991 |
| 5053374 | Method for preparing a zeolite catalyst bound with a refractory oxide of low acidity Low acidity refractory oxide-bound zeolite catalysts, for example, silica-bound ultrastable Y zeolite, possessing physical properties, e.g., crush strength, similar to those of their alumina-bound counterparts are described. Since low acidity refractory o... | 10/01/1991 |
| 5043508 | Process for preparing long chain alkyl aromatic compounds Relatively long chain alkyl aromatic compounds are prepared by alkylating an alkylatable aromatic compound with a relatively long chain alkylating agent under alkylation reaction conditions in the presence of a layered material as an alkylation catalyst. ... | 08/27/1991 |
| 5043307 | Modified crystalline aluminosilicate zeolite catalyst and its use in the production of lubes of high viscosity index The present invention provides a process for modifying a crystalline aluminosilicate zeolite having a Constraint Index of from about to about 12 which comprises: a) steaming the as synthesized crystalline aluminosilicate zeolite containing organic templat... | 08/27/1991 |
| 5037530 | Catalytic cracking with layered silicates There is provided a process for cracking hydrocarbon feedstocks which include large hydrocarbon molecules. Examples of such feedstocks are those which include a large proportion of resids. The catalyst used in this process comprises a layered silicate, su... | 08/06/1991 |
| 5034362 | Zeolitic catalyst composition of improved shape selectivity There are provided aromatic conversion reactions for preparation of dialkylbenzenes, such as xylene and ethyltoluene, of enhanced para isomer content with a zeolitic catalyst composition of improved shape selectivity. The catalysts comprise certain zeolit... | 07/23/1991 |
| 5026933 | Olefin oligomerization with surface modified zeolite catalyst A process for producing substantially linear hydrocarbons by oligomerizing a lower olefin at elevated temperature and pressure which comprises contacting the lower olefin under oligomerization/polymerization conditions with siliceous acidic ZSM-23 zeolite... | 06/25/1991 |
| 5026921 | Aromatization process utilizing a pillared layered silicate plus gallium or zinc Therein is provided a process for the aromatization of non-aromatic hydrocarbons having at least two carbon atoms. The non-aromatic feed is contacted with a catalyst which includes gallium or zinc which is incorporated into or onto a pillared layered sili... | 06/25/1991 |
| 5025109 | Process for upgrading methane to higher hydrocarbons There is provided a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a spinel oxide such as ZnMn2 O4.... | 06/18/1991 |
| 5023393 | Process for upgrading methane to higher hydrocarbons There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is an NiZSM-5 catalyst. This catalyst may be prepared by ion exc... | 06/11/1991 |
| 5023392 | Process for upgrading methane to higher hydrocarbons There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is a CuZSM-5 catalyst. This catalyst may be prepared by ion exch... | 06/11/1991 |
| 5023391 | Process for upgrading methane to higher hydrocarbons There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons are produced. The catalyst used in this reaction is a GaZSM-5 catalyst. This catalyst may be prepared by ion exch... | 06/11/1991 |
| 5015360 | Production of hydrocarbon fractions by hydrocracking A process for hydrocracking 343° C.+ feedstock is disclosed. The process employs a catalyst which comprises a layered silicate, such as magadiite or kenyaite, which contains interspathic polymeric silica. The catalyst also contains at least on... | 05/14/1991 |
| 5015798 | Conversion of methane There is provided a process for the direct partial oxidation of methane with oxygen, whereby organic compounds comprising higher hydrocarbons including C5 + liquid hydrocarbons are produced. The catalyst used in this reaction may be a ZSM-5 cat... | 05/14/1991 |
| 5012029 | Conversion of methane A mixture of organic compounds comprising a major amount of liquid hydrocarbons, mostly aromatic, is formed by the direct partial oxidation of methane in the presence of a ZSM-5 catalyst. The reaction conditions are substantially the same as those require... | 04/30/1991 |
