Invention Grant
- Patent Title: Method for manufacturing of spheroidal alumina particles
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Application No.: US14365781Application Date: 2012-11-16
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Publication No.: US09669387B2Publication Date: 2017-06-06
- Inventor: Sylvie Lacombe , Priscilla Avenier , Malika Boualleg , Delphine Bazer-Bachi , Patrick Euzen , Joseph Lopez
- Applicant: IFP ENERGIES NOUVELLES
- Applicant Address: FR Rueil-Malmaison
- Assignee: IFP ENERGIES NOUVELLES
- Current Assignee: IFP ENERGIES NOUVELLES
- Current Assignee Address: FR Rueil-Malmaison
- Agency: Millen, White, Zelano and Branigan, P.C.
- Priority: FR1103998 20111220
- International Application: PCT/FR2012/000466 WO 20121116
- International Announcement: WO2013/093221 WO 20130627
- Main IPC: C01F7/00
- IPC: C01F7/00 ; B01J21/04 ; C01F7/02 ; C01F7/44 ; B01J35/10 ; B01J37/00 ; C04B35/111 ; C04B35/626 ; B01J27/135

Abstract:
The present invention concerns spheroidal alumina particles, catalysts comprising such particles as a support and a process for the production of spheroidal alumina particles, comprising the following steps: a) preparing a suspension comprising water, an acid and at least one boehmite powder for which the ratio of the crystallite dimensions in the [020] and [120] directions obtained using the Scherrer X-ray diffraction formula is in the range 0.7 to 1; b) adding a pore-forming agent, a surfactant and optionally water, or an emulsion comprising at least one pore-forming agent, a surfactant and water to the suspension of step a); c) mixing the suspension obtained in step b); d) shaping the spheroidal particles by the oil-drop method using the suspension obtained in step c); e) drying the particles obtained in step d); f) calcining the particles obtained in step e).
Public/Granted literature
- US20140357471A1 METHOD FOR MANUFACTURING OF SPHEROIDAL ALUMINA PARTICLES Public/Granted day:2014-12-04
Information query
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