Abstract: The invention relates to a synthetic crystalline material and its use in catalytic conversion of organic compounds and as a sorbent. The crystalline material contains one or more microporous crystalline phases, having a micropore volume greater than or equal to about 0.15 cc/g distributed in channels between about 3 to about 15 .ANG. in average diameter which is rendered accessible by a mesopore volume of greater than or equal to about 0.1 cc/g distributed in channels between about 20 to about 100 .ANG. in average diameter. A process is also provided for preparing the crystalline material of the present invention.
Type:
Grant
Filed:
June 6, 1996
Date of Patent:
December 15, 1998
Assignee:
Intevep, S.A.
Inventors:
Juan Lujano, Yilda Romero, Jose Carrazza
Abstract: A process for preparing an inorganic porous material, includes the steps of forming a solution of a hydrolyzable inorganic compound with a non-ionic surfactant having organic molecules; inducing growth and condensation of a solid composition comprising an inorganic composition in intimate contact with said organic molecules; and extracting said organic molecules from said inorganic composition so as to provide said inorganic porous material having wall portions defining mesopore-sized channels having a mean diameter of between about 15 .ANG. to about 100 .ANG. and a narrow diameter distribution of less than or equal to about 30 .ANG., said material having a void volume from said mesopore-sized channels of at least about 0.1 cc/g.
Type:
Grant
Filed:
January 31, 1997
Date of Patent:
November 24, 1998
Assignee:
Intevep, S.A.
Inventors:
Jose Carrazza, Jose Rafael Cordova, Juan Lujano, Jose Manuel Cruz
Abstract: An adsorbent for selective removal of nitrile from a hydrocarbon feedstock includes a substantially homogeneous mixture of a cationic nonacidic zeolite and an inorganic oxide matrix, the zeolite having an accessibility index of between about 0.1 to about 0.4, and the adsorbent being capable, when contacted with a hydrocarbon feedstock containing nitrile and containing dienes in an amount of at least about 1.0% by volume, of adsorbing at least about 80% of the nitrile during contact with at least about 200 volumes of the feedstock per volume of adsorbent.
Type:
Grant
Filed:
September 18, 1995
Date of Patent:
November 10, 1998
Assignee:
Intevep, S.A.
Inventors:
Maria Magdalena Ramirez de Agudelo, Julia Guerra, Marisela Gonzalez
Abstract: A catalyst comprising a modified mordenite zeolite catalyst modified with Pt and a promoter selected from the group consisting of Group IIB, Group IVA, Group VIB and mixtures thereof is effectively used in a process for the simultaneous dehydrogenation and isomerization of paraffins to isoparaffins and isoolefins under controlled conditions. The catalyst is prepared by depositing on the modified mordenite zeolite catalyst sequentially Pt and thereafter the promoter.
Type:
Grant
Filed:
July 29, 1997
Date of Patent:
October 13, 1998
Assignee:
Intevep, S.A.
Inventors:
Maria Magdalena de Agudelo, Trino Romero, Jose Guaregua, Marisela Gonzalez
Abstract: 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 oxide-zeolite composite, carbon and zeolite, and a catalytically active metal phase selected from the group consisting of partially reduced group IB metals and completely reduced group VIII metals, said metal phase being present in an amount of grater than or equal to about 0.03 wt %, and said catalyst having an initial diolefin hydrogenation activity, treating a hydrocarbon feedstock having a diolefin content of greater than or equal to about 0.
Type:
Grant
Filed:
April 2, 1996
Date of Patent:
October 6, 1998
Assignee:
Intevep, S.A.
Inventors:
Magdalena Ramirez de Agudelo, Zaida Hernandez de Godoy, Raul Navarro, Julia Guerra
Abstract: A catalyst system for treating sulfur and nitrogen contaminated hydrocarbon feedstock includes a matrix, at least one support medium substantially uniformly distributed through said matrix and comprising a silica alumina molecular sieve material having a composition xSiO.sub.2 :Al.sub.2 O.sub.3 :yP.sub.2 O.sub.5, wherein x is at least about 0.1, a first catalytically active metal phase supported on said support medium, said first catalytically active metal phase comprising a first metal and a second metal each selected from group VIII of the Periodic Table of Elements, said first metal being different from said second metal, a second catalytically active metal phase supported on said matrix, said second catalytically active metal phase comprising a third metal and a fourth metal each selected from group VIII of the Periodic Table of Elements and a fifth metal selected from group VIb of the Periodic Table of Elements, said third metal being different from said fourth metal.
Type:
Grant
Filed:
June 3, 1996
Date of Patent:
October 6, 1998
Assignee:
Intevep, S.A.
Inventors:
Jorge Alejandro Tejada, Yilda Margot Romero, Edito Jose Reyes
Abstract: A catalyst system for treating sulfur and nitrogen contaminated hydrocarbon feedstock includes a matrix, at least one support medium substantially uniformly distributed through said matrix and comprising a silica alumina molecular sieve material having a silica/alumina ratio of at least about 20, a first catalytically active metal phase supported on said support medium, said first catalytically active metal phase comprising a first metal and a second metal each selected from group VIII of the Periodic Table of Elements, said first metal being different from said second metal, a second catalytically active metal phase supported on said matrix, said second catalytically active metal phase comprising a third metal and a fourth metal each selected from group VIII of the Periodic Table of Elements and a fifth metal selected from group VIb of the Periodic Table of Elements, said third metal being different from said fourth metal.
Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.
Type:
Grant
Filed:
January 5, 1996
Date of Patent:
September 1, 1998
Assignee:
Intevep, S.A.
Inventors:
Jorge Tejada, Juan Lujano, Yilda Romero
Abstract: A stable hydrocarbon-in-water emulsion includes a hydrocarbon phase containing natural surfactant; a water phase having an electrolyte content greater than about 10 ppm (wt) and less than or equal to about 100 ppm (wt) with respect to the water phase; and a surfactant additive including an amine and an ethoxylated alcohol in amounts effective to activate the natural surfactant and stabilize the emulsion.
Type:
Grant
Filed:
March 21, 1997
Date of Patent:
August 11, 1998
Assignee:
Intevep, S.A.
Inventors:
Hercilio Rivas, Xiomara Gutierrez, Antonio E. Cardenas, Amanda Morles
Abstract: A thermally stable well servicing fluid includes a fluid portion in the form of an oil-in-water emulsion; and a surfactant mixture including an anionic surfactant selected from the group consisting of alkali metal salts of alkyl sulphates, alkali metal salts of alkyl sulphonates, and mixtures thereof, and a non-ionic surfactant selected from the group consisting of ethoxylated alkyl phenols, ethoxylated aliphatic alcohols and mixtures thereof, the surfactant mixture containing the anionic surfactant and the non-ionic surfactant at a ratio by weight of between about 70:30 to about 80:20, the fluid being stable at temperatures exceeding 220.degree. F.
Abstract: A process for upgrading a nitrogen and sulfur rich heavy naphtha feedstock includes the steps of providing a naphtha feedstock having an initial nitrogen content, an initial sulfur content and an initial octane number; contacting the naphtha feedstock with an acid source so as to provide a reduced nitrogen feedstock having a reduced nitrogen content which is less than the initial nitrogen content; contacting the reduced nitrogen feedstock with a hydroconversion catalyst system under a hydrogen atmosphere, temperature and pressure so as to provide a final product having a final nitrogen content which is less than the initial nitrogen content, a final sulfur content which is less than the initial sulfur content, and having a final octane number which is substantially equal to or greater than the initial octane number of the feedstock, and wherein the final product has an increased isomerized component and substantially no increase in aromatic content with respect to the feedstock.
Type:
Grant
Filed:
June 11, 1996
Date of Patent:
June 23, 1998
Assignee:
Intevep, S.A.
Inventors:
Jose Armando Salazar, Luis M. Cabrera, Eusebio Palmisano, Wolfgang J. Garcia, Rodolfo Bruno Solari
Abstract: The present invention relates to a zeolite catalyst, a process for using the catalyst for conversion of hydrocarbons, especially naphtha and LPG feedstock, and a process for preparing the catalyst.
Type:
Grant
Filed:
January 5, 1996
Date of Patent:
June 23, 1998
Assignee:
Intevep, S.A.
Inventors:
Jorge Tejada, Juan Lujano, Yilda Romero
Abstract: An olefin polymerization catalyst includes a halogen-containing magnesium compound; a titanium compound; and an additive selected from the group consisting of (a) a mixture of an aluminum alkoxide compound and polydimethylsiloxane, (b) an aluminosiloxane, (c) the reaction product of an aluminum alkyl and a calixarene, (d) the reaction product of an aluminum alkyl and a cyclodextrin, and mixtures of (a)-(d).
Type:
Grant
Filed:
May 31, 1996
Date of Patent:
June 16, 1998
Assignee:
Intevep, S.A.
Inventors:
Antonio Diaz-Barrios, Jose Liscano, Marianela Trujillo, Giuseppe Agrifoglio, Jose Orlando Matos
Abstract: A catalyst system for selective hydrogenation of sulfur-containing and nitrogen-containing compounds of a heteroaromatic organic phase includes a mixture of a noble metal selected from Group VIII of the Periodic Table of Elements and a water-soluble ligand. A process for preparing the catalyst system and hydrogenation process using the catalyst system are also provided.
Type:
Grant
Filed:
June 4, 1996
Date of Patent:
May 19, 1998
Assignee:
Intevep, S.A.
Inventors:
Daniel E. Paez, Antida Andriollo, Roberto A. Sanchez-Delgado, Norma del V. Valencia, Roberto E. Galiasso, Francisco A. Lopez
Abstract: A combustible fuel for diesel engines and a process for forming same in the form of a water in hydrocarbon emulsion wherein the mean water drop diameter is .ltoreq.4 .mu.m with a maximum diameter of .ltoreq.10 .mu.m.
Type:
Grant
Filed:
February 9, 1996
Date of Patent:
March 10, 1998
Assignee:
Intevep, S.A.
Inventors:
Hercilio Rivas, Gustavo A. Nunez, Tulio Colmenares, Manuel Chirinos
Abstract: A catalyst useful for the simultaneous and selective hydrogenation of diolefins and nitriles present in a hydrocarbon feedstock. The support material is preferably selected from the group consisting of an inorganic oxide-zeolite composite, carbon and zeolite. A catalytically active phase is deposited on the support material. The catalytically active metal phase is selected from the group consisting of partially reduced Group IB metals and completely reduced Group VIII metals. The catalytically active metal phase is present in an amount of .gtoreq.0.03 wt %. A process using the catalyst involves counter current flow of feedstock and hydrogen in the presence of the catalyst.
Type:
Grant
Filed:
January 29, 1997
Date of Patent:
January 27, 1998
Assignee:
Intevep, S.A.
Inventors:
Magdalena Ramirez De Agudelo, Zaida C. Hernandez, Alejandro Granado
Abstract: A catalyst support includes substantially spherical particles of a substantially homogeneous mixture of at least two compounds selected from the group consisting of refractory inorganic oxides, refractory inorganic carbides, refractory inorganic nitrides and mixtures thereof, wherein said particles have a surface area of at least about 30 m.sup.2 /g, an average pore diameter of at least about 150 .ANG., and a particle size of at least about 0.1 mm. The support may be used in a catalyst system to support a Group IVb and a Group VIII metal in a catalyst system useful for hydrogenation of carbon monoxide into C.sub.2 + hydrocarbons. A method is also provided for preparing the catalyst support and system.
Type:
Grant
Filed:
September 20, 1996
Date of Patent:
January 20, 1998
Assignee:
Intevep, S.A.
Inventors:
Luis A. Rivas, Enzo Peluso, Daisy Rojas, Juan Jose Garcia
Abstract: An apparatus for determining a parameter of substance includes a cell defining an inner space, an inlet associated with the cell for introducing a sample of the substance to the inner space, an outlet associated with the cell for removing the sample from the inner space, an optic couple for passing NIR radiation through the sample in the inner space along an optic path so as to provide an NIR spectrum indicative of a parameter of the sample, the optic couple defining the optic path, and structure for directing flow in the inner space, whereby vortices within the inner space are inhibited and the NIR spectrum is rapidly provided upon introduction of the sample to the inner space.
Type:
Grant
Filed:
May 3, 1996
Date of Patent:
January 13, 1998
Assignee:
Intevep, S.A.
Inventors:
Aaron Ranson, Pedro Felipe Tovar, Adriano Filadelfo Parisi
Abstract: A catalyst for use in a process for steam conversion of a heavy hydrocarbon feedstock includes the steps of: providing a heavy hydrocarbon feedstock; providing a catalytically active phase comprising a first metal and a second metal wherein said first metal is a non-noble Group VIII metal and said second metal is an alkali metal; and contacting said feedstock with steam at a pressure of less than or equal to about 300 psig in the presence of said catalytically active phase so as to provide a hydrocarbon product having a reduced boiling point. The catalyst may be supported on a support material or mixed directly with the feedstock and comprises a first metal selected from the group consisting of non-noble Group VIII metals and mixtures thereof and a second metal comprising an alkali metal wherein said catalyst is active to convert said heavy hydrocarbon at a pressure of less than or equal to about 300 psig.
Type:
Grant
Filed:
March 17, 1995
Date of Patent:
November 18, 1997
Assignee:
Intevep, S.A.
Inventors:
Jose Carrazza, Pedro Pereira, Nelson Martinez
Abstract: A catalyst for use in a process for steam conversion of a heavy hydrocarbon feedstock includes the steps of: providing a heavy hydrocarbon feedstock; providing a catalytically active phase comprising a first metal and a second metal wherein said first metal is a non-noble Group VIII metal and said second metal is an alkali metal; and contacting said feedstock with steam at a pressure of less than or equal to about 300 psig in the presence of said catalytically active phase so as to provide a hydrocarbon product having a reduced boiling point. The catalyst may be supported on a support material or mixed directly with the feedstock and comprises a first metal selected from the group consisting of non-noble Group VIII metals and mixtures thereof and a second metal comprising an alkali metal wherein said catalyst is active to convert said heavy hydrocarbon at a pressure of less than or equal to about 300 psig.
Type:
Grant
Filed:
July 2, 1996
Date of Patent:
November 18, 1997
Assignee:
Intevep, S.A.
Inventors:
Jose Carrazza, Pedro Pereira, Nelson Martinez