Heterogeneous catalysts
AssigneeSiluria Technologies, Inc.
InventorsWayne P. Schammel, Anja Rumplecker, Fabio R. Zurcher, Erik C. Scher, Joel M. Cizeron, Joel Gamoras
Life of this patent
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Abstract
Heterogeneous catalysts with optional dopants are provided. The catalysts are useful in a variety of catalytic reactions, for example, the oxidative coupling of methane to C2+ hydrocarbons. Related methods for use and manufacture of the same are also disclosed.
Claims21
A catalyst comprising a mixed oxide base material for the oxidative coupling of methane, the mixed oxide base material comprising lanthanide elements and a dopant combination selected from the group consisting of Sr/Sm, Sr/Gd, Sr/Dy, Sr/Er, Sr/Lu, Sr/Ba/B, Ba/B, Ba/Sr, Er/W, Sr/K, Ba/Ce, Ba/Hf, Ga/Mg, Mg/Er, Y/Ba, Sr/Ga/Mg, Sr/Y, Sr/B/Y, Ca/B, Sr/Al, Ba/W, B/W, Sr/Ba/W, Sr/W/B, Ba/W/B and Sr/Ba/WB,
- wherein the mixed oxide base material has the following formula (III):
- Ln1aLn2bLn3dLn4eLn5fOc (III)
- wherein:
- Ln1, Ln2, Ln3, Ln4 and Ln5 are independently different lanthanide elements;
- O is oxygen;
- and
- a, b and c are each independently numbers greater than 0;
- and
- d, e and f are independently 0 or a number greater than 0,
- provided that one of the lanthanide elements is not lanthanum when another lanthanide element is neodymium.
A catalyst comprising a mixed oxide base material for the oxidative coupling of methane, the mixed oxide base material comprising three different lanthanide elements and a dopant combination selected from the group consisting of Sr/Sm, Sr/Gd, Sr/Dy, Sr/Er, Sr/Lu, Sr/Ba/B, Ba/B, Ba/Sr, Er/W, Sr/K, Ba/Ce, Ba/Hf, Ga/Mg, Mg/Er, Y/Ba, Sr/Ga/Mg, Sr/Y, Sr/B/Y, Ca/B, Sr/Al, Ba/W, B/W, Sr/Ba/W, Sr/W/B, Ba/W/B and Sr/Ba/W/B, provided that one of the lanthanide elements is not lanthanum when another lanthanide element is neodymium.
Dependencies are inferred from the claim text.