Patents by Inventor Amanda DE ALMEIDA DUMANI DOS SANTOS

Amanda DE ALMEIDA DUMANI DOS SANTOS has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11697107
    Abstract: The present invention describes a mixture comprising carbonaceous raw material of low value as a fuel and a nanocatalyst. The catalytic mixture comprises from 1% to 50% by weight of a nanocatalyst; and from 99% to 50% by weight of carbonaceous raw material selected from petroleum coke, coal, heavy residual fraction of oil, or a mixture thereof. The nanocatalyst comprises a carbon nanomaterial of between 99.99% and 80% by weight in contents and at least one alkali metal of between 0.01% and 20% by weight in contents, based on the total weight of the nanocatalyst, and the specific surface area of the nanocatalyst ranges between 400 and 1300 m2/g. Furthermore, the present invention also describes a process for gasifying the catalytic mixture which comprises the steps of placing the mixture in a gasifier; heating the mixture in the presence of an oxidizing agent selected from air, pure oxygen, carbon dioxide, water vapor, or a mixture thereof at a temperature ranging between 200 and 1,300° C.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: July 11, 2023
    Assignee: PETROLEO BRASILEIRO S.A.—PETROBRAS
    Inventors: Wladmir Ferraz De Souza, Vivian Passos De Souza, Maira Andrade Rodrigues, Amanda De Almeida Dumani Dos Santos
  • Publication number: 20230002691
    Abstract: The present invention relates to a catalyst to be applied to the process of gasification of coke or coal, individually or in mixture, and to the process of preparing said catalyst, which is useful in obtaining higher levels of hydrogen and carbon monoxide, which allows the conversion of coke into by-products of higher added value (hydrogen-rich syngas). The present invention also addresses to a process for converting petroleum coke by using a catalyst according to the present invention.
    Type: Application
    Filed: November 17, 2020
    Publication date: January 5, 2023
    Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS, UNIVERSIDADE FEDERAL DO RIO DE JANEIRO - UFRJ
    Inventors: Vivian PASSOS DE SOUZA, Amanda DE ALMEIDA DUMANI DOS SANTOS, Maira ANDRADE RODRIGUES, Victor TEIXEIRA DA SILVA
  • Patent number: 11241683
    Abstract: The present invention relates to catalysts of iron and chromium with a platinum promoter for use in water-gas shift reactions, both at low temperatures (LTS) and at high temperatures (HTS). Their characteristics of higher activity due to the addition of Pt compared to the conventional catalysts make them superior to the commercial catalysts in the same operating conditions. Because precursors of the active phase (Fe3O4) are obtained in greater quantity per unit area, it was possible to prepare catalysts that are more promising with a smaller surface area.
    Type: Grant
    Filed: October 3, 2017
    Date of Patent: February 8, 2022
    Assignees: PETRÓLEO BRASILEIRO S.A.—PETROBRAS, UNIVERSIDADE FEDERAL FLUMINENSE—UFF
    Inventors: Luis Eduardo Terra De Almeida, Ludmila De Paula Cabral Silva, Ana Carla da Silveira Lomba Sant'ana Coutinho, Fabio Barboza Passos, Vivian Passos De Souza, Maira Andrade Rodrigues, Amanda De Almeida Dumani Dos Santos
  • Publication number: 20210362129
    Abstract: The present invention describes a mixture comprising carbonaceous raw material of low value as a fuel and a nanocatalyst. The catalytic mixture comprises from 1% to 50% by weight of a nanocatalyst; and from 99% to 50% by weight of carbonaceous raw material selected from petroleum coke, coal, heavy residual fraction of oil, or a mixture thereof. The nanocatalyst comprises a carbon nanomaterial of between 99.99% and 80% by weight in contents and at least one alkali metal of between 0.01% and 20% by weight in contents, based on the total weight of the nanocatalyst, and the specific surface area of the nanocatalyst ranges between 400 and 1300 m2/g. Furthermore, the present invention also describes a process for gasifying the catalytic mixture which comprises the steps of placing the mixture in a gasifier; heating the mixture in the presence of an oxidizing agent selected from air, pure oxygen, carbon dioxide, water vapor, or a mixture thereof at a temperature ranging between 200 and 1,300° C.
    Type: Application
    Filed: August 2, 2019
    Publication date: November 25, 2021
    Inventors: Wladmir FERRAZ DE SOUZA, Vivian PASSOS DE SOUZA, Maira ANDRADE RODRIGUES, Amanda DE ALMEIDA DUMANI DOS SANTOS
  • Publication number: 20180093261
    Abstract: The present invention relates to catalysts of iron and chromium with a platinum promoter for use in water-gas shift reactions, both at low temperatures (LTS) and at high temperatures (HTS). Their characteristics of higher activity due to the addition of Pt compared to the conventional catalysts make them superior to the commercial catalysts in the same operating conditions. Because precursors of the active phase (Fe3O4) are obtained in greater quantity per unit area, it was possible to prepare catalysts that are more promising with a smaller surface area.
    Type: Application
    Filed: October 3, 2017
    Publication date: April 5, 2018
    Applicants: PETRÓLEO BRASILEIRO S.A. - PETROBRAS, UNIVERSIDADE FEDERAL FLUMINENSE - UFF
    Inventors: Luis Eduardo Terra DE ALMEIDA, Ludmila DE PAULA CABRAL SILVA, Ana Carla da Silveira Lomba Sant'ana COUTINHO, Fabio Barboza PASSOS, Vivian Passos DE SOUZA, Maira Andrade RODRIGUES, Amanda DE ALMEIDA DUMANI DOS SANTOS