	US 12,434,230 B2
	Modified zeolites that include hafnium hydride moieties and methods for making such
Robert Peter Hodgkins, Dhahran (SA); Omer Refa Koseoglu, Dhahran (SA); Kuo-Wei Huang, Thuwal (SA); Magnus Rueping, Thuwal (SA); Manoja K. Samantaray, Thuwal (SA); Rajesh Kumar Parsapur, Thuwal (SA); and Anissa Bendjeriou Sedjerari, Thuwal (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA); and King Abdullah University of Science and Technology, Thuwal (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA); and King Abdullah University of Science and Technology, Thuwal (SA)
Filed on Jun. 15, 2023, as Appl. No. 18/335,719.
Prior Publication US 2024/0416333 A1, Dec. 19, 2024
Int. Cl. B01J 31/12 (2006.01); B01J 29/08 (2006.01); B01J 35/30 (2024.01); B01J 35/61 (2024.01); B01J 35/63 (2024.01); B01J 35/64 (2024.01); B01J 37/00 (2006.01); C10G 11/05 (2006.01)

CPC B01J 31/121 (2013.01) [B01J 29/088 (2013.01); B01J 35/394 (2024.01); B01J 35/615 (2024.01); B01J 35/617 (2024.01); B01J 35/618 (2024.01); B01J 35/633 (2024.01); B01J 35/635 (2024.01); B01J 35/638 (2024.01); B01J 35/643 (2024.01); B01J 35/647 (2024.01); B01J 35/651 (2024.01); B01J 37/00 (2013.01); C10G 11/05 (2013.01)]

20 Claims

1. A modified zeolite comprising:

a microporous framework comprising a plurality of micropores having diameters of less than or equal to 2 nm, wherein the microporous framework comprises at least silicon atoms and oxygen atoms;

a plurality of mesopores having diameters of greater than 2 nm and less than or equal to 50 nm, wherein the plurality of mesopores are ordered with cubic symmetry; and

a plurality of hafnium hydride moieties each bonded to at least two bridging oxygen atoms, wherein a hafnium atom of the hafnium hydride is bonded to the bridging oxygen atom, and wherein the bridging oxygen atom bridges the hafnium atom of the hafnium hydride moiety and a silicon atom of the microporous framework.

14. A method of cracking a hydrocarbon feedstock, the method comprising contacting the hydrocarbon feedstock with a catalyst comprising the modified zeolite of claim 1 and cracking at least a portion of the hydrocarbon feedstock to form a product.

16. A method of making the modified zeolite of claim 1, the method comprising:

reacting an organometallic chemical with a dehydroxylated zeolite, wherein the dehydroxylated zeolite comprises isolated terminal silanol functionalities comprising hydroxyl groups bonded to silicon atoms of the dehydroxylated zeolite, wherein reacting the organometallic chemical with the dehydroxylated zeolite forms an intermediate zeolite comprising organometallic moieties each bonded to an oxygen atom of the intermediate zeolite, and wherein each organometallic moiety comprises a portion of the organometallic chemical; and

reacting the intermediate zeolite with hydrogen to form the modified zeolite of claim 1, wherein reacting the intermediate zeolite with hydrogen converts at least a portion of the organometallic moieties to hafnium hydride moieties.