US 11,654,421 B2
Metal catalysts with low-alkali metal content and acid/metal bifunctional catalyst systems thereof
Chuansheng Bai, Phillipsburg, NJ (US); Majosefina Cunningham, Whitehall, PA (US); Jihad M. Dakka, Whitehouse Station, NJ (US); Preeti Kamakoti, Berkeley Heights, NJ (US); Aruna Ramkrishnan, Bridgewater, NJ (US); Anjaneya S. Kovvali, Herndon, VA (US); and Anita S. Lee, Spring, TX (US)
Assigned to EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY, Annandale, NJ (US)
Filed by ExxonMobil Technology and Engineering Company, Annandale, NJ (US)
Filed on Aug. 13, 2020, as Appl. No. 16/947,701.
Claims priority of provisional application 62/886,985, filed on Aug. 15, 2019.
Prior Publication US 2021/0046461 A1, Feb. 18, 2021
Int. Cl. B01J 23/80 (2006.01); C07C 41/01 (2006.01); B01J 37/04 (2006.01); B01J 37/03 (2006.01); B01J 37/30 (2006.01); B01J 37/00 (2006.01); B01J 37/08 (2006.01); B01J 37/34 (2006.01); B01J 37/06 (2006.01); B01J 37/02 (2006.01); B01J 37/18 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/10 (2006.01); B01J 21/18 (2006.01)
CPC B01J 23/80 (2013.01) [B01J 21/18 (2013.01); B01J 35/0013 (2013.01); B01J 35/026 (2013.01); B01J 35/1014 (2013.01); B01J 35/1019 (2013.01); B01J 35/1038 (2013.01); B01J 35/1042 (2013.01); B01J 35/1047 (2013.01); B01J 35/1061 (2013.01); B01J 37/0036 (2013.01); B01J 37/0236 (2013.01); B01J 37/031 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/088 (2013.01); B01J 37/18 (2013.01); B01J 37/30 (2013.01); B01J 37/348 (2013.01); C07C 41/01 (2013.01)] 27 Claims
OG exemplary drawing
 
1. A method comprising:
mixing two or more metal salts and an aluminum salt in water to produce a metal catalyst precursor solution;
mixing the metal catalyst precursor solution and an alkali metal buffer solution to produce a precipitate;
ion exchanging the alkali metal in the precipitate for a non-alkali cation to produce a low-alkali metal precipitate comprising 3 wt % or less alkali metal by weight of the precipitate on a dry basis;
producing a powder from the low-alkali metal precipitate; and
calcining the powder to produce a metal catalyst.