US 11,673,123 B2
Catalysts for the reforming of gaseous mixtures
Tomas Ramirez Reina, Guildford (GB); Estelle Le Saché, Guildford (GB); Sai Gu, Guildford (GB); David Watson, Guildford (GB); Laura Pastor Pérez, San Vicente del Raspeig (ES); and Antonio Sepúlveda Escribano, San Vicente del Raspeig (ES)
Assigned to University of Surrey, Guildford (GB); and University of Alicante, San Vicente del Raspeig (ES)
Appl. No. 16/493,616
Filed by University of Surrey, Guildford (GB); and University of Alicante, San Vicente del Raspeig (ES)
PCT Filed Mar. 12, 2018, PCT No. PCT/GB2018/050621
§ 371(c)(1), (2) Date Sep. 12, 2019,
PCT Pub. No. WO2018/167467, PCT Pub. Date Sep. 20, 2018.
Claims priority of application No. 1704017 (GB), filed on Mar. 14, 2017.
Prior Publication US 2020/0061588 A1, Feb. 27, 2020
Int. Cl. B01J 23/83 (2006.01); B01J 23/00 (2006.01); B01J 35/00 (2006.01); B01J 35/02 (2006.01); B01J 35/10 (2006.01); B01J 37/00 (2006.01); B01J 37/08 (2006.01); B01J 37/18 (2006.01); C01B 3/40 (2006.01); C01G 53/00 (2006.01)
CPC B01J 23/83 (2013.01) [B01J 23/002 (2013.01); B01J 35/0066 (2013.01); B01J 35/026 (2013.01); B01J 35/1009 (2013.01); B01J 35/1014 (2013.01); B01J 35/1038 (2013.01); B01J 35/1061 (2013.01); B01J 37/0018 (2013.01); B01J 37/08 (2013.01); B01J 37/18 (2013.01); C01B 3/40 (2013.01); C01G 53/70 (2013.01); B01J 2523/3706 (2013.01); B01J 2523/48 (2013.01); B01J 2523/847 (2013.01); C01B 2203/0238 (2013.01); C01B 2203/1058 (2013.01); C01B 2203/1241 (2013.01); C01P 2002/36 (2013.01); C01P 2002/72 (2013.01); C01P 2002/82 (2013.01); C01P 2004/03 (2013.01); C01P 2006/12 (2013.01); C01P 2006/14 (2013.01); C01P 2006/16 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A solid mixed oxide material suitable for use in catalysing a methane dry reforming reaction, wherein the solid mixed oxide material comprises a first crystalline phase, the first crystalline phase being attributable to a pyrochlore crystal structure, and wherein the solid mixed oxide material comprises 7.5-13.0% of nickel by weight relative to a total weight of the solid mixed oxide material, and wherein the first crystalline phase has a composition according to general formula (I) shown below
A2B2O7   (I)
wherein:
A is a trivalent cation of La, and optionally one or more other trivalent cation of an element selected from the group consisting of Ce, Pr, Nd, Sm, Sc, Y and Eu; and
B is a mixture of:
(i) a tetravalent cation of Zr, and optionally one or more other tetravalent or trivalent cation of an element selected from the group consisting of Ti, Cr, Mn and Mo, and
(ii) a divalent cation of Ni,
and wherein the solid mixed oxide material comprises a second crystalline phase, the second crystalline phase being attributable to a Ruddlesden-Popper crystal structure of general formula (II) shown below:
A′2B′O4   (II)
wherein:
A′ is a trivalent cation of La, and optionally one or more other trivalent cation of an element selected from the group consisting of Ce, Pr, Nd, Sm, Sc, Y and Eu; and
B′ is a divalent cation of Ni, and optionally one or more other divalent, trivalent or tetravalent cations of an element selected from the group consisting of Fe, Co, Cu, Ti and Zr;
wherein the solid mixed oxide material has a surface area of 9-14 m2/g, a pore volume of 0.06-0.13 cm3/g and an average pore size of 3.5-5.5 nm.