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.:
Date of Patent:
Dec. 06, 2022
Filed:
May. 15, 2020
National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University, Fuzhou, CN;
Petrochina Petrochemical Research Institute, Beijing, CN;
Beijing Sanju Environmental Protection & New Materials Co., Ltd., Beijing, CN;
Lilong Jiang, Fuzhou, CN;
Jun Ni, Fuzhou, CN;
Jianxin Lin, Fuzhou, CN;
Shengbao He, Beijing, CN;
Ke Lin, Beijing, CN;
Bingyu Lin, Fuzhou, CN;
Xingyi Lin, Fuzhou, CN;
Other;
Abstract
Disclosed is a ruthenium-based catalyst for ammonia synthesis, preparation method and use thereof. The ruthenium-based catalyst comprises Ru—Ba-A core-shell structure which comprises a ruthenium nanoparticle as a core covered with a first shell and a second shell sequentially, wherein the first shell consists of a barium nanoparticle, and the second shell consists of a metal oxide. The Ru—Ba-A core-shell structure can effectively preventing agglomerations of ruthenium nanoparticles during the use of the catalyst and avoiding direct contact between the ruthenium nanoparticles and the metal oxides. In addition, barium nanoparticles have a promoting effect as an electronic promoter, which can effectively improve the stability and catalytic activity of ruthenium-based catalyst for ammonia synthesis, especially in the system for synthesizing ammonia from a coal gas.