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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12427506 B1

PDFFull Text
Date of Patent:
Sep. 30, 2025

Filed:

May. 16, 2025

Method for carbon dioxide fixation using a palladium-doped nitrogen-rich organic framework catalyst

Applicant:

King Fahd University of Petroleum and Minerals, Dhahran, SA;

Inventors:

Bosirul Hoque, Dhahran, SA;

Aasif Helal, Dhahran, SA;

Assignee:

King Fahd University of Petroleum and Minerals, Dhahran, SA;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Taylor V Oh

Int. Cl.
CPC ...
B01J 31/16 (2006.01); B01J 31/02 (2006.01); B01J 31/40 (2006.01); B01J 35/30 (2024.01); B01J 35/40 (2024.01); B01J 35/51 (2024.01); B01J 35/64 (2024.01); B01J 37/00 (2006.01); B01J 37/04 (2006.01); B01J 37/06 (2006.01); B01J 37/16 (2006.01); B01J 38/02 (2006.01); B01J 38/48 (2006.01); C07D 317/36 (2006.01);
U.S. Cl.
CPC ...
B01J 31/1691 (2013.01); B01J 31/0239 (2013.01); B01J 31/4038 (2013.01); B01J 35/393 (2024.01); B01J 35/40 (2024.01); B01J 35/51 (2024.01); B01J 35/643 (2024.01); B01J 37/009 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/16 (2013.01); B01J 38/02 (2013.01); B01J 38/48 (2013.01); C07D 317/36 (2013.01); B01J 2231/4288 (2013.01); B01J 2531/824 (2013.01);
Abstract

A method of carbon dioxide fixation includes contacting a covalent organic framework material with a co-catalyst and an epoxide in the presence of carbon dioxide to form a cyclic carbonate. The covalent organic framework material includes reacted units of a 2,4,6-trimethyl-1,3,5-triazine, reacted units of a 4,4'-biphenyldicarbaldehyde, and palladium nanoparticles. The reacted units of the 2,4,6-trimethyl-1,3,5-triazine and the reacted units of the 4,4′-biphenyldicarbaldehyde form a COF-701, where the palladium nanoparticles are on an outer surface of the COF-701. The co-catalyst is n-tetrabutylammonium bromide.

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