公开(公告)号：US20240351014A1

公开(公告)日：2024-10-24

申请号：US18302045

申请日：2023-04-18

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammad Mozahar HOSSAIN ,  Yahya GAMBO ,  Mohammed Saleh BA-SHAMMAKH ,  Sagir ADAMU

IPC: B01J37/08 ,  B01J6/00 ,  B01J21/02 ,  B01J23/22 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/00 ,  B01J37/04 ,  C07C5/333

CPC classification number: B01J37/086 ,  B01J6/001 ,  B01J21/02 ,  B01J23/22 ,  B01J35/19 ,  B01J35/40 ,  B01J35/613 ,  B01J35/633 ,  B01J35/635 ,  B01J35/647 ,  B01J37/0036 ,  B01J37/04 ,  C07C5/3332

Abstract: A method of making an active catalyst composition includes mixing an alumina support with first catalyst precursor particles and grinding thereby at least partially embedding the first catalyst precursor particles onto surfaces of the alumina support to form a first composite precursor; mixing the first composite precursor and a first solvent to form a first mixture; grinding the first mixture and drying at a temperature of 100 to 150° C.; calcining the first mixture after the drying at a first temperature of at least 200° C. and a second temperature of at least 550° C. thereby allowing the first catalyst precursor particles embedded onto the surfaces of the alumina support to decompose in situ to generate first catalyst particles embedded onto the surfaces of the alumina support and form a first catalyst; and mixing the first catalyst with a second catalyst to form the active catalyst composition.

公开(公告)号：US20220152594A1

公开(公告)日：2022-05-19

申请号：US16601657

申请日：2019-10-15

Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

Inventor： Mohammad Mozahar HOSSAIN ,  Idris Akolade BAKARE ,  Sagir ADAMU

IPC: B01J23/648 ,  B01J27/232 ,  C07C5/48 ,  B01J23/02 ,  B01J35/10

Abstract: Oxidative dehydrogenation (ODH) of alkanes to alkenes, e.g., propane to propylene, may use solid phase oxygen in VOx based mixed oxide catalysts. Beyond catalysis, the metal oxide species provide lattice oxygen. The catalysts can be prepared by depositing vanadium oxide(s) on θ-Al2O3 mixed with various alkaline earth metal oxide support, e.g., CaO, MgO, BaO, etc. Surface area, acidity, and reduction properties of the catalyst systems can be modified by the support. The catalysts may allow multistage reduction of VOx, indicating different VOx species. Vanadium on θ-Al2O3/CaO can suppress COx species, while vanadium on θ-Al2O3/BaO can yield at least ca. 49% olefins.