Patents by Inventor Raja Znaiguia

Raja Znaiguia 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).

  • Method for preparing acrolein from glycerol
    Patent number: 9187395
    Abstract: The disclosure concerns a method for preparing acrolein from glycerol, according to which a dehydration of the glycerol is carried out in the presence of a catalyst MWOA, wherein MWO represents a mixture of simple oxides and/or mixed oxides of tungsten and at least one metal M selected among zirconium, silicon, titanium, aluminium and yttrium, and A represents one or several Lewis base(s), one said Lewis base being of the formula B(R1)p(R2)q(R3)r, wherein B is an element selected among C, S, P, O, N and halides, R1, R2 and R3 represent, independently of each other, H, a C1-C6 alkyl group, O, OH or OR wherein R represents a C1-C6 alkyl group, and the sum of p, q and r varies from 0 to 4.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: November 17, 2015
    Assignees: ADISSEO FRANCE S.A.S., CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, UNIVERSITE CLAUDE BERNARD
    Inventors: Raja Znaiguia, Jean-Marc Millet, Stéphane Loridant, Patrick Rey
  • METHOD FOR PREPARING ACROLEIN FROM GLYCEROL
    Publication number: 20150239815
    Abstract: The disclosure concerns a method for preparing acrolein from glycerol, according to which a dehydration of the glycerol is carried out in the presence of a catalyst MWOA, wherein MWO represents a mixture of simple oxides and/or mixed oxides of tungsten and at least one metal M selected among zirconium, silicon, titanium, aluminium and yttrium, and A represents one or several Lewis base(s), one said Lewis base being of the formula B(R1)p(R2)q(R3)r, wherein B is an element selected among C, S, P, O, N and halides, R1, R2 and R3 represent, independently of each other, H, a C1-C6 alkyl group, O, OH or OR wherein R represents a C1-C6 alkyl group, and the sum of p, q and r varies from 0 to 4.
    Type: Application
    Filed: October 29, 2013
    Publication date: August 27, 2015
    Inventors: Raja Znaiguia, Jean-Marc Millet, Stéphane Loridant, Patrick Rey