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公开(公告)号：US11897783B2
公开(公告)日：2024-02-13
申请号：US16772621
申请日：2018-12-18
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Olivier Larcher
CPC classification number: C01F7/441 , C01F7/34 , C01P2002/54 , C01P2002/60 , C01P2002/72 , C01P2006/13 , C01P2006/14 , C01P2006/16
Abstract: The present invention relates to a porous aluminum hydrate, to a process for preparing same and to the use of same as intermediate in the preparation of an alumina or of a mixed oxide based on aluminum, on cerium and on zirconium. The invention also relates to the alumina obtained from the aluminum hydrate.
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公开(公告)号：US09901915B2
公开(公告)日：2018-02-27
申请号：US14613941
申请日：2015-02-04
Applicant: RHODIA OPERATIONS
Inventor： Simon Ifrah , Olivier Larcher , Rui Jorge Coelho Marques , Michael Lallemand , Julien Hernandez
IPC: B01J35/02 , B01J23/00 , B01J23/10 , B01J23/34 , B01J23/83 , B01J35/00 , B01J37/03 , B01J21/04 , B82Y30/00 , C01G45/12 , C01G49/00 , C04B35/26
CPC classification number: B01J35/026 , B01J21/04 , B01J23/002 , B01J23/10 , B01J23/34 , B01J23/83 , B01J35/006 , B01J37/031 , B01J2523/00 , B82Y30/00 , C01G45/1264 , C01G49/0054 , C01P2002/34 , C01P2002/72 , C01P2004/64 , C04B35/2675 , C04B2235/3208 , C04B2235/3227 , C04B2235/3229 , Y02C20/10 , B01J2523/3706 , B01J2523/842 , B01J2523/72 , B01J2523/23 , B01J2523/3712
Abstract: The composition according to the invention includes a perovskite of the formula LaMO3, where M is at least one element selected from among iron, aluminium or manganese, in the form of particles dispersed on an alumina or aluminium oxyhydroxide substrate, characterized in that after calcination at 700° C. for 4 hours, the perovskite is in the form of a pure crystallographic phase, and in that the size of the perovskite particles does not exceed 15 nm. The composition according to the invention can be used in the field of catalysis.
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公开(公告)号：US11583831B2
公开(公告)日：2023-02-21
申请号：US16472848
申请日：2017-12-22
Applicant: RHODIA OPERATIONS
Inventor： Lama Itani , Julien Hernandez , Barry William Luke Southward
IPC: B01J23/10 , B01D53/94 , B01J35/00 , B01J35/02 , B01J35/10 , B01J37/02 , B01J37/03 , B01J37/04 , B01J37/06 , B01J37/08 , C01G25/00 , C01G27/00
Abstract: The present invention relates to a mixed oxide of aluminium, of zirconium, of cerium, of lanthanum and optionally of at least one rare-earth metal other than cerium and lanthanum that makes it possible to prepare a catalyst that retains, after severe ageing, a good thermal stability and a good catalytic activity. The invention also relates to the process for preparing this mixed oxide and also to a process for treating exhaust gases from internal combustion engines using a catalyst prepared from this mixed oxide.
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公开(公告)号：US20150361652A1
公开(公告)日：2015-12-17
申请号：US14834044
申请日：2015-08-24
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Catherine Enjalbert
IPC: E04B1/74
CPC classification number: E04B1/74 , C04B30/02 , C04B14/062 , C04B20/0048 , C04B40/006 , C04B40/0071 , C04B2103/56
Abstract: Thermal and/or acoustic insulation materials based on dried precipitated silica, having a total pore volume of from 1 to 5 cm3/g and optionally containing reinforcing fillers and/or opacifying agents, are prepared by: (A) filtering an aqueous dispersion D containing precipitated silica particles in a filter press, whereby a compacted filter cake is obtained; and then (B) drying the filter cake in the compacted state as obtained after step (A).
Abstract translation: 基于干燥的沉淀二氧化硅，具有1至5cm 3 / g的总孔体积和任选地含有增强填料和/或不透明剂的热和/或隔音材料通过以下方法制备：（A）过滤含有 在压滤机中沉淀二氧化硅颗粒，从而获得压实的滤饼; 然后（B）在步骤（A）之后获得的压实状态下干燥滤饼。
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Patent Agency Ranking
公开(公告)号：US20250114772A1
公开(公告)日：2025-04-10
申请号：US18293416
申请日：2022-07-25
Applicant: Rhodia Operations
Inventor： Julien Hernandez , Oguzhan Yaglidere , Virginie Harle , Simon Ifrah
Abstract: The invention relates to a composition which is a composition C1 which is based on Al and Ce in the form of oxides; or a composition C2 which is based on Al, Ce and La in the form of oxides with the following proportions of CeO2 is between 5.0 wt % and 35.0 wt %; La2O3 (for composition C2 only) is between 0.1 wt % and 6.0 wt %; the remainder being Al2O3; and exhibiting a specific porosity profile and exhibiting the following properties of a mean size of the crystallites after calcination in air at 1100° C. for 5 hours (denoted D1100° C.-5h) which is lower than 45.0 nm; a mean size of the crystallites after calcination in air at 900° C. for 2 hours (denoted D900° C.-2h) which is lower than 25.0 nm; and an increase ΔD of the mean size of the crystallites lower than 30.0 nm, ΔD being calculated with the following formula: ΔD=D1100° C.-5h−D900° C.-2h; the mean size of the crystallites being obtained by XRD from the diffraction peak of the cubic phase corresponding to cerium oxide, generally present at 2θ between 28.0° and 30.0°.
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公开(公告)号：US20240253019A1
公开(公告)日：2024-08-01
申请号：US18564390
申请日：2022-05-09
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Oguzhan Yaglidere , Virginie Harle , Simon Ifrah
CPC classification number: B01J23/63 , B01J35/32 , B01J35/613 , B01J35/635 , B01J35/638 , B01J35/77 , B01J37/04 , B01J37/08 , B01J37/343 , B01J2235/15
Abstract: The present invention relates to a composition based on Al and Ce in the form of oxides (composition C1); or based on Al, Ce and La in the form of oxides (composition C2), with the following proportions: —the proportion of CeO2 is between 3.0 wt % and 35.0 wt %; —the proportion of La2O3 (for composition C2 only) is between 0.1 wt % and 6.0 wt %; —the remainder as Al2O3; exhibiting the following porosity profile: —a pore volume in the range of pores with a size of between 5 nm and 100 nm which is between 0.35 and 1.00 mL/g; and—a pore volume in the range of pores with a size of between 100 nm and 1000 nm which is less than or equal to 0.15 mL/g, these pore volumes being determined by means of the mercury porosimetry technique; and the following properties: —a mean size of the crystallites after calcination in air at 1100° C. for 5 hours (denoted D1100° C.-5 h) which is lower than 45.0 nm, preferably lower than 40.0 nm; —a mean size of the crystallites after calcination in air at 900° C. for 2 hours (denoted D900° C.-2 h) which is lower than 25.0 nm, preferably lower than 20.0 nm, even more preferably lower than 15.0 nm; and—an increase ΔD of the mean size of the crystallites lower than 30.0 nm, preferably lower than 25.0 nm, ΔD being calculated with the following formula: ΔD=D1100ºC-2h-D900C-5h; the mean size of the crystallites being obtained by XRD from the diffraction peak [111] of the cubic phase corresponding to cerium oxide, generally present at 2Φ between 28.0 and 30.0.
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公开(公告)号：US09903109B2
公开(公告)日：2018-02-27
申请号：US14834044
申请日：2015-08-24
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Catherine Enjalbert
CPC classification number: E04B1/74 , C04B30/02 , C04B14/062 , C04B20/0048 , C04B40/006 , C04B40/0071 , C04B2103/56
Abstract: Thermal and/or acoustic insulation materials based on dried precipitated silica, having a total pore volume of from 1 to 5 cm3/g and optionally containing reinforcing fillers and/or opacifying agents, are prepared by: (A) filtering an aqueous dispersion D containing precipitated silica particles in a filter press, whereby a compacted filter cake is obtained; and then (B) drying the filter cake in the compacted state as obtained after step (A).
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公开(公告)号：US20220410128A1
公开(公告)日：2022-12-29
申请号：US17781310
申请日：2020-11-25
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Virginie Harle , Oguzhan Yaglidere , Andrew D. Allerton
IPC: B01J23/10 , B01J35/10 , B01J35/00 , B01J35/02 , B01J37/04 , B01J37/03 , B01J37/34 , B01J37/02 , B01J37/08 , B01J37/00
Abstract: The present invention relates to an alumina with a particular pore profile and good thermal stability. This alumina is also characterized in that it has a high bulk density. The alumina has, after calcining in air at 1100° C. for 5 hours: a pore volume in the range of pores with a size of between 5 nm and 100 nm which is between 0.50 and 0.75 mL/g, more particularly between 0.50 and 0.70 mL/g; and a pore volume in the range of pores with a size of between 100 nm and 1000 nm which is less than or equal to 0.20 mL/g, more particularly less than or equal to 0.15 mL/g, or even less than or equal to 0.10 mL/g.
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公开(公告)号：US20220410124A1
公开(公告)日：2022-12-29
申请号：US17781282
申请日：2020-11-25
Applicant: RHODIA OPERATIONS
Inventor： Julien Hernandez , Virginie Harle , Oguzhan Yaglidere , Andrew D. Allerton
IPC: B01J21/04 , C01F7/441 , C01F7/34 , B01J23/10 , B01J37/04 , B01J37/03 , B01J37/08 , B01J35/10 , B01J35/00 , B01J35/02
Abstract: The present invention relates to an alumina with a particular pore profile and good thermal stability. This alumina is also characterized in that it has a high bulk density. The alumina has, after calcining in air at 1100° C. for 5 hours: a pore volume in the range of pores with a size of between 5 nm and 100 nm which is between 0.50 and 0.75 mL/g, more particularly between 0.50 and 0.70 mL/g; and a pore volume in the range of pores with a size of between 100 nm and 1000 nm which is less than or equal to 0.20 mL/g, more particularly less than or equal to 0.15 mL/g, or even less than or equal to 0.10 mL/g.
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