Patents by Inventor Jean-Luc Le Loarer
Jean-Luc Le Loarer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8618017Abstract: A catalyst for hydrotreating and/or hydroconverting heavy metal-containing hydrocarbon feeds, comprises a support in the form of mainly irregular and non-spherical alumina-based agglomerates the specific shape. The catalyst is prepared by a specific order of steps: crushing, calcining, acidic autoclaving, drying, further calcining and impregnation with catalytic metals.Type: GrantFiled: May 3, 2012Date of Patent: December 31, 2013Assignee: IFP Energies NouvellesInventors: Stephane Kressmann, Magalie Roy-Auberger, Jean Luc Le Loarer, Denis Guillaume, Jean Francois Chapat
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Publication number: 20090166260Abstract: The present invention concerns a catalyst for hydrotreating and/or hydroconverting heavy metal-containing hydrocarbon feeds, said catalyst comprising a support in the form of mainly irregular and non-spherical alumina-based agglomerates the specific shape of which results from a crushing step, and containing at least one catalytic metal or a compound of a catalytic metal from group VIB and/or group VIII (groups 8, 9 and 10 of the new periodic table notation), optionally at least one doping element selected from the group constituted by phosphorus, boron and silicon (or silica which does not form part of that which may be contained in the selected support) and halogens, said catalyst essentially being constituted by a plurality of juxtaposed agglomerates each formed by a plurality of acicular platelets, the platelets of each agglomerate generally being oriented radially with respect to each other and with respect to the centre of the agglomerate.Type: ApplicationFiled: December 14, 2006Publication date: July 2, 2009Inventors: Stephane Kressmann, Magalie Roy-Auberger, Jean Luc Le Loarer, Denis Guillaume, Jean Francois Chapat
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Patent number: 7125538Abstract: The invention provides alumina agglomerates of the type obtained by dehydrating an aluminum hydroxide or oxyhydroxide, agglomerating the alumina obtained, hydrothermally treating the agglomerates and calcining. The invention also provides a catalyst support, an adsorbent material and a catalyst constituted by said agglomerates. The invention also provides methods for preparing said agglomerates.Type: GrantFiled: March 28, 2002Date of Patent: October 24, 2006Assignee: AxensInventors: Jean-Luc Le Loarer, Christophe Nedez
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Patent number: 7090825Abstract: The invention relates to alumina agglomerates of the type obtained by dehydrating an aluminium oxyhydroxide or hydroxide, agglomerating the alumina thus obtained, hydrothermally treating the agglomerates and calcinating same. Said agglomerates are characterised in that: the V37 ? thereof is greater than or equal to 75 ml/100 g, preferably greater than or equal to 80 ml/100 g and, better still, greater than or equal to 85 ml/100 g; the V0.1 ?m thereof is less than or equal to 31 ml/100 g; and the V0.2 ?m thereof is less than or equal to 20 ml/100 g, preferably less than or equal to 15 ml/100 g and, better still, less than or equal to 10 ml/100 g. The invention also relates to a catalyst carrier, an intrinsic catalyst or an absorbent, in particular for use in the petroleum and petrochemical industry, comprising such alumina agglomerates. Moreover, the invention relates to methods for preparing said agglomerates.Type: GrantFiled: March 27, 2002Date of Patent: August 15, 2006Assignee: AxensInventors: Jean-Luc Le Loarer, Christophe Nedez
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Publication number: 20050079126Abstract: The invention relates to alumina agglomerates of the type obtained by dehydrating an aluminium oxyhydroxide or hydroxide, agglomerating the alumina thus obtained, hydrothermally treating the agglomerates and calcinating same. Said agglomerates are characterised in that: the V37 ? thereof is greater than or equal to 75 ml/100 g, preferably greater than or equal to 80 ml/100 g and, better still, greater than or equal to 85 ml/100 g; the V0.1 ?m thereof is less than or equal to 31 ml/100 g; and the V0.2 ?m thereof is less than or equal to 20 ml/100 g, preferably less than or equal to 15 ml/100 g and, better still, less than or equal to 10 ml/100 g. The invention also relates to a catalyst carrier, an intrinsic catalyst or an absorbent, in particular for use in the petroleum and petrochemical industry, comprising such alumina agglomerates. Moreover, the invention relates to methods for preparing said agglomerates.Type: ApplicationFiled: March 27, 2002Publication date: April 14, 2005Inventors: Jean-Luc Le Loarer, Christophe Nedez
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Publication number: 20040146456Abstract: The invention provides alumina agglomerates of the type obtained by dehydrating an aluminum hydroxide or oxyhydroxide, agglomerating the alumina obtained, hydrothermally treating the agglomerates and calcining, characterized in that:Type: ApplicationFiled: March 15, 2004Publication date: July 29, 2004Inventors: Jean-Luc Le Loarer, Christophe Nedez
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Patent number: 6656875Abstract: The present invention concerns alumina extrudates with characteristics, in particular porosity, which are adapted for their use as catalyst supports or catalysts, in particular for hydrotreating petroleum cuts. It also concerns processes for forming the alumina to achieve the properties of the extrudates of the invention.Type: GrantFiled: February 18, 2000Date of Patent: December 2, 2003Assignee: Institut Francais du PetroleInventors: Jean-Luc Le Loarer, Hubert Nussbaum, Denis Bortzmeyer
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Patent number: 6103917Abstract: The invention concerns a method for regenerating a working solution for producing hydrogen peroxide 30%, in which the working solution is contacted with alumina at a temperature of approximately 40-160.degree. C.Type: GrantFiled: July 27, 1999Date of Patent: August 15, 2000Assignee: Procatalyse S.A.Inventors: Jean-Luc Le Loarer, Christophe Nedez, Bernard Taxil
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Patent number: 5891412Abstract: Ceric oxide particulates having a specific surface of at least 190 m.sup.2 /g, measured after calcination at a temperature of from 350.degree. to 450.degree. C., and a specific surface of at least 15 m.sup.2 /g after calcination at 800.degree. C., are prepared by (a) suspending, in an aqueous solution of a decomposable base, a ceric hydroxide of the formula (I):Ce(M).sub.x (OH).sub.y (NO.sub.3).sub.z (I)wherein M is an alkali metal or a quaternary ammonium radical; x is a number ranging from 0.01 to 0.2; y is such that y=4-z+x; and z is a number ranging from 0.4 to 0.7; (b) heating the resulting suspension in a confined reaction zone to a temperature and pressure respectively lower than its critical temperature and pressure; (c) cooling such reaction medium and permitting it to return to atmospheric pressure; (d) separating the ceric hydroxide thus treated; and (e) calcining the separated ceric hydroxide.Type: GrantFiled: August 25, 1997Date of Patent: April 6, 1999Assignee: Rhone-Poulenc ChimieInventors: Jean-Luc Le Loarer, Francoise Picard, Claire David
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Patent number: 5744420Abstract: Adsorbent alumina particulates which comprise coagulated droplets, extrudates or crushed alumina particles having a volume of pores with a diameter greater than 80 .ANG. of at least 0.15 cm.sup.3 /g and a particle size of less than 4 mm are well suited for adsorbing chelated organometallic compound values thereon, in particular from a medium of polymerization comprising same.Type: GrantFiled: July 8, 1996Date of Patent: April 28, 1998Assignee: Rhone-Poulenc ChimieInventors: Jean-Luc Le Loarer, Christophe Nedez
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Patent number: 5718879Abstract: Heat-stable alumina particulates well suited as catalysts/catalyst supports, notably for the catalytic conversion of vehicular exhaust gases, contain a stabilizing amount of lanthanum values, optionally a costabilizing amount of neodymium values, and have a specific surface area of greater than 40 m.sup.2 /g after calcination at 1,200.degree. C. for 4 hours; these are produced by ripening/rehydrating an alumina powder at least partially into boehmite/pseudo-boehmite state in the presence of a stabilizing amount of at least one lanthanum compound, e.g, lanthanum nitrate, and, optionally, also at least one neodymium compound, the starting alumina powder being the product of rapid dehydration of at least one aluminum hydroxide and/or aluminum oxyhydroxide.Type: GrantFiled: August 5, 1996Date of Patent: February 17, 1998Assignee: Rhone-Poulenc ChimieInventors: Thierry Chopin, Jean-Luc Le Loarer
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Patent number: 5518703Abstract: Very finely divided ammonium rare earth double oxalates, readily converted into corresponding rare earth oxides by calcination, such oxides being well adopted, e.g., for the production of luminescent compounds therefrom, are prepared by (a) admixing a second solution of a rare earth compound, e.g., a salt, with a first solution containing oxalate and ammonium ions, (b) then separating the precipitate thus obtained from such mixed solution of reaction, and (c) optionally, drying the separated precipitate.Type: GrantFiled: May 3, 1994Date of Patent: May 21, 1996Assignee: Rhone-Poulenc ChimieInventors: Bernard-Antoine Dissaux, Jean-Luc Le Loarer, Bernard Pacaud, Michel Ries
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Patent number: 5403565Abstract: Environmental pollution stemming from the industrial discharge and/or storage of water-soluble thorium compounds is avoided by converting same into essentially innocuous water-insoluble thorium phosphates, notably orthorhombic thorium phosphates, by (i) reacting such water-soluble thorium compounds, e.g., the nitrates and/or chlorides, with a base, for example aqueous ammonia, in an aqueous reaction medium, to precipitate a thorium hydroxide therein, (ii) next reacting the precipitate thus formed with a phosphating compound, e.g., phosphoric acid or a soluble phosphate salt, also in an aqueous reaction medium, to precipitate a thorium phosphate therein, and then (iii) separating such thorium phosphate precipitate.Type: GrantFiled: October 19, 1993Date of Patent: April 4, 1995Assignee: Rhone-Poulenc ChimieInventors: Thierry Delloye, Jean-Luc Le Loarer, Alain Leveque
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Patent number: 5338520Abstract: Neodymium or didymium values are selectively recovered from bastnaesite ores, essentially to the exclusion of cerium and trace amounts of thorium, by (i) calcining the bastnaesite ore, (ii) selectively leaching the calcined bastnaesite with an aqueous solution of nitric acid to solubilize therein neodymium and trivalent rare earth values, and thereby producing an insoluble residue which comprises cerium and thorium values, (iii) separating the insoluble residue, and (iv) liquid/liquid extracting desired neodymium or didymium values from the nitric acid solution.Type: GrantFiled: March 19, 1987Date of Patent: August 16, 1994Assignee: Rhone-Poulenc ChimieInventors: Alain Leveque, Jean-Luc Le Loarer
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Patent number: 5279789Abstract: Ceric oxide particulates having a specific surface of at least 190 m.sup.2 /g, measured after calcination at a temperature of from 350.degree. to 450.degree. C., and a specific surface of at least 15 m.sup.2 /g after calcination at 800.degree. C., are prepared by (a) suspending, in an aqueous solution of a decomposable base, a ceric hydroxide of the formula (I):Ce(M).sub.x (OH).sub.y (NO.sub.3).sub.z (I)wherein M is an alkali metal or a quaternary ammonium radical; x is a number ranging from 0.01 to 0.2; y is such that y=4-z+x; and z is a number ranging from 0.4 to 0.7; (b) heating the resulting suspension in a confined reaction zone to a temperature and pressure respectively lower than its critical temperature and pressure; (c) cooling such reaction medium and permitting it to return to atmospheric pressure; (d) separating the ceric hydroxide thus treated; and (e) calcining the separated ceric hydroxide.Type: GrantFiled: July 28, 1992Date of Patent: January 18, 1994Assignee: Rhone-Poulenc ChimieInventors: Jean-Luc Le Loarer, Francoise Picard, Claire David
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Patent number: 5273949Abstract: Thermally stable alumina having a high specific surface at elevated temperatures, well suited as a catalyst support material, e.g., as the support substrate of catalysts useful for the conversion of exhaust gases emanating from internal combustion engines, contain an effective heat stabilizing amount of silica, such silica essentially being distributed within the crystalline network/structure of the alumina, and such silica-stabilized alumina having an isoelectric point above 7 and a reduced capacity for the isomerization of olefins.Type: GrantFiled: May 13, 1992Date of Patent: December 28, 1993Assignee: Rhone-Poulenc ChimieInventors: Thierry Chopin, Georges Dovergne, Jean-Luc Le Loarer
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Patent number: 5174984Abstract: A ceric oxide having a specific surface of at least 15 m.sup.2 /g, measured after calcination at a temperature of between 800.degree. and 900.degree. C.Type: GrantFiled: January 30, 1991Date of Patent: December 29, 1992Assignee: Rhone-Poulenc ChimieInventor: Jean-Luc Le Loarer
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Patent number: 5064628Abstract: Provided is a ceric oxide having a specific surface of at least 85 m.sup.2 /g after calcination between 350.degree. and 550.degree. C., and being further characterized in that it has a pore volume of at least 0.15 cm.sup.3 /g and a median pore diameter greater than 50 .ANG.. The ceric oxide is prepared by destabilizing an aqueous colloidal dispersion of a cerium (IV) compound by the addition of base thereto, separating the precipitate which results and subjecting it to a heat treatment.Type: GrantFiled: February 22, 1990Date of Patent: November 12, 1991Assignee: Rhone-Poulenc ChimieInventors: Jean-Yves Chane-Ching, Jean-Luc Le Loarer, Patrick Dupuis
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Patent number: 5035834Abstract: Novel cerium (IV) compounds having the Formula (I):Ce(OH).sub.x (NO.sub.3).sub.y, pCeO.sub.2.nH.sub.2 O (I)can be directly dispersed in water to produce unique colloidal dispersions thereof.Type: GrantFiled: March 26, 1987Date of Patent: July 30, 1991Assignee: Rhone-Poulenc ChimieInventors: Jean-Yves Chane-Ching, Jean-Luc Le Loarer
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Patent number: 5026421Abstract: An improved glass polishing composition that contains ceric oxide and a boron compound. A process for the preparation of this composition is also disclosed. The polishing composition has improved suspension properties while still maintaining a high polishing efficiency.Type: GrantFiled: December 27, 1989Date of Patent: June 25, 1991Assignee: Rhone-Poulenc ChimieInventors: Jean-Luc Le Loarer, Francis Tastu