Patents by Inventor Sabine Zeyss

Sabine Zeyss 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: 7015355
    Abstract: A method for the selective production of acetic acid from a gas-phase feed of ethane, ethylene, or mixtures thereof and oxygen at elevated temperatures. The gas-phase feed is brought into contact with a catalyst, containing the elements Mo, Pd, X and Y in the gram atom ratios a:b:c: in combination with oxygen according to formula (I): MOaPdbXcYd. The symbols X and Y have the following meanings: X=one or several elements chosen from the group Cr, Mn, Nb, Ta, Ti, V, Te and W; Y=one or several elements chosen from the group B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Ir, Cu, Ag, Au, Fe, Fu, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Nb, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Ti and U: the indices a, b, c, d and x=the gram atom ration for the corresponding elements, where: a=1; b—0.0001 to 0.01; c=0.4 to 1; and d=0.005 to 1, wherein the space-time yield for the above oxidation to yield acetic acid is 470 kg/(hm3) and the selectivity of the oxidative reaction of ethane and/or ethylene to give acetic acid is, in particular, ?70 mol %.
    Type: Grant
    Filed: May 3, 2001
    Date of Patent: March 21, 2006
    Assignee: Celanese International Corporation
    Inventors: Sabine Zeyss, Uwe Dingerdissen
  • Patent number: 6906221
    Abstract: The invention relates to a method for producing acetic acid by oxidizing ethane in fluid bed reactors with high selectivity and high yields.
    Type: Grant
    Filed: October 17, 2001
    Date of Patent: June 14, 2005
    Assignee: Celanese International Corporation
    Inventors: Sabine Zeyss, Uwe Dingerdissen, Manfred Baerns, Dorit Wolf, David Linke
  • Patent number: 6852877
    Abstract: A process for the production of vinyl acetate comprising contacting in a first reaction zone a gaseous feedstock comprising essentially ethane with a molecular oxygen-containing gas in the presence of a catalyst to produce a first product stream comprising acetic acid; contacting in a second reaction zone a gaseous feedstock comprising essentially ethane with a molecular oxygen-containing gas in the product stream comprising ethylene; contacting in a third reaction one the first gaseous product stream and the second gaseous product stream with a molecular oxygen-containing gas in the presence of a catalyst to produce a fourth product stream comprising vinyl acetate; separating the product stream from step (3) and recovering vinyl acetate from said product stream from step (3).
    Type: Grant
    Filed: May 19, 2000
    Date of Patent: February 8, 2005
    Assignee: Celanese International Corp.
    Inventors: Sabine Zeyss, Uwe Dingerdissen, John Fritch
  • Patent number: 6790983
    Abstract: An integrated process for the production of vinyl acetate comprising the steps of: (a) containing in a first reaction zone a gaseous feedstock comprising essentially ethane with a molecular oxygen-containing gas in the presence of a catalyst to produce a first product stream comprising acetic acid and ethylene; (b) containing in a second reaction zone the first gaseous product stream with a molecular oxygen-containing gas in the presence of a catalyst to produce a second product stream comprising vinyl acetate; (c) separating the product stream from step (b) recovering vinyl acetate from the product stream from step (b).
    Type: Grant
    Filed: November 19, 2002
    Date of Patent: September 14, 2004
    Assignee: Celanese International Corporation
    Inventors: Sabine Zeyss, Uwe Dingerdissen, John Fritch
  • Publication number: 20040133039
    Abstract: The invention relates to a method for producing acetic acid by oxidizing ethane in fluid bed reactors with high selectivity and high yields.
    Type: Application
    Filed: August 12, 2003
    Publication date: July 8, 2004
    Inventors: Sabine Zeyss, Uwe Dingerdissen, Manfred Baerns, Dorit Wolf, David Linke
  • Publication number: 20030158440
    Abstract: The invention relates to a method for the selective production of acetic acid from a gas-phase feed of ethane, ethylene, or mixtures thereof and oxygen at elevated temperatures. The gas-phase feed is brought into contact with a catalyst, containing the elements Mo, Pd, X and Y in the gram atom ratios a:b:c in combination with oxygen according to formula (I): MoaPdbXcYd. The symbols X and Y have the following meanings: X=one or several elements chosen from the group Cr, Mn, Nb, Ta, Ti, V, Te and W; Y=one or several elements chosen from the group B, Al, Ga, In, Pt, Zn, Cd, Bi, Ce, Co, Rh, Ir, Cu, Ag, Au, Fe, Ru, Os, K, Rb, Cs, Mg, Ca, Sr, Ba, Nb, Zr, Hf, Ni, P, Pb, Sb, Si, Sn, Ti and U; the indices a, b, c, d and x=the gram atom ratio for the corresponding elements, where: a=1; b=0.0001 to 0.01; c=0.4 to 1; and d=0.005 to 1. The space-time yield for the above oxidation to yield acetic acid is 470 kg/(hm3).
    Type: Application
    Filed: November 19, 2002
    Publication date: August 21, 2003
    Inventors: Sabine Zeyss, Uwe Dingerdissen