Patents Assigned to CUF - Quimicos Industriais S.A.
  • Patent number: 9498765
    Abstract: The disclosed subject matter includes a new type of chemical reactor, described as hydrogen or oxygen electrochemical pumping catalytic membrane reactor. This new type of reactor is suitable for increasing the selectivity and the conversion rate of dehydrogenation, hydrogenation, deoxidation and oxidation reactions and namely in the direct amination reaction of hydrocarbons. This reactor can be used for the production of several chemical compounds, such as the direct amination of hydrocarbons and in particular for the synthesis of aniline from benzene. The disclosed subject matter includes a device and process wherein hydrogen is removed by electrochemical pumping of the hydrogen formed or by oxygen pumping so, as hydrogen is formed, it is oxidized. This new reactor exhibits benzene to aniline conversion higher than 40%.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: November 22, 2016
    Assignee: CUF-QUIMICOS INDUSTRIAIS S.A.
    Inventor: Adélio Miguel Magalhães Mendes
  • Publication number: 20160032469
    Abstract: An electrodes/electrolyte assembly—MEA, electrochemical membrane reactor—is described and a method for the direct amination of hydrocarbons, namely for the direct amination of benzene to aniline, and a method for the preparation of said electrodes/electrolyte assembly. The presented Solution allows the increase of conversion of said amination to above 60%, even at low temperatures, i.e., between 200° C. and 450° C.; preferably between 300° C. and 400° C. The electrodes/electrolyte assembly for direct amination of hydrocarbons comprises: an anode (1), electrons and protons conductor, that includes a composite porous matrix, comprised by a ceramic fraction and a catalyst for said amination at temperatures lower than 450° C.; a porous cathode (3), electrons and protons conductor, and electrocatalyst; an electrolyte (2), protons or ions conductor and electrically insulating, located between the anode (1) and the cathode (3), made of a composite ceramic impermeable to reagents and products of said amination.
    Type: Application
    Filed: March 28, 2014
    Publication date: February 4, 2016
    Applicant: CUF - Quimicos Industriais S.A.
    Inventors: Adelio Miguel MAGALHAES MENDES, Alejandro FRANCA GOMES RIBEIRO, Margarida DIAS CATARINO, Ana Sofia PIMENTEL FELIX, Mario Jorge DE OLIVEIRA PINHO