US 12,441,696 B2
Carrier, catalyst, methods for producing them and method for producing ethylene oxide
Serguei Pak, Teaneck, NJ (US); and Yasuyuki Kato, Aichi (JP)
Assigned to Scientific Design Company, Inc., Little Ferry, NJ (US); and Noritake Co., Limited, Nagoya (JP)
Filed by SCIENTIFIC DESIGN COMPANY, INC., Little Ferry, NJ (US); and Noritake Co., Limited, Aichi (JP)
Filed on Aug. 29, 2017, as Appl. No. 15/689,758.
Claims priority of provisional application 62/442,626, filed on Jan. 5, 2017.
Prior Publication US 2018/0186759 A1, Jul. 5, 2018
Int. Cl. B01J 23/50 (2006.01); B01J 21/08 (2006.01); B01J 23/58 (2006.01); B01J 23/66 (2006.01); B01J 23/68 (2006.01); C07D 301/10 (2006.01); B01J 21/12 (2006.01)
CPC C07D 301/10 (2013.01) [B01J 21/08 (2013.01); B01J 23/50 (2013.01); B01J 23/58 (2013.01); B01J 23/66 (2013.01); B01J 23/688 (2013.01); B01J 21/12 (2013.01); Y02P 20/52 (2015.11)] 16 Claims
 
1. A porous alumina carrier for an ethylene epoxidation catalyst, the porous alumina carrier consisting of sintered particles of alumina in a substantial absence of alkali metal oxides, alkaline earth metal oxides, titanium oxide, zirconium oxide, and silicon-containing species functioning as binder species for binding the sintered particles of alumina,
wherein said substantial absence corresponds to a sum total amount greater than zero wt % and up to 0.5 wt % of all of said alkali metal oxides, alkaline earth metal oxides, titanium oxide, zirconium oxide, and silicon-containing binder species combined by weight of the porous alumina carrier as measured on the sintered particles of alumina, and the sintered particles of alumina are based on a low soda alumina.