Patents by Inventor Iva Franjkic

Iva Franjkic 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).

  • Process for producing ethanol by hydrogenation with carbon monoxide controls
    Patent number: 9150475
    Abstract: A process for produce ethanol by hydrogenation acetic acid and/or esters thereof is disclosed. The process involves reacting hydrogen feed stream with an acetic acid feed stream in a reactor operated in the presence of a catalyst to form an ethanol mixture and monitoring carbon monoxide concentration of the fresh hydrogen feed stream and adjusting temperature in the reactor in response to the carbon monoxide concentration of the fresh hydrogen feed stream.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: October 6, 2015
    Assignee: Celanese International Corporation
    Inventors: Radmila Wollrab, Iva Franjkic, Victor J. Johnston, Heiko Weiner
  • Process for Producing Ethanol by Hydrogenation with Carbon Monoxide Controls
    Publication number: 20150133700
    Abstract: A process for produce ethanol by hydrogenation acetic acid and/or esters thereof is disclosed. The process involves reacting hydrogen feed stream with an acetic acid feed stream in a reactor operated in the presence of a catalyst to form an ethanol mixture and monitoring carbon monoxide concentration of the fresh hydrogen feed stream and adjusting temperature in the reactor in response to the carbon monoxide concentration of the fresh hydrogen feed stream.
    Type: Application
    Filed: November 8, 2013
    Publication date: May 14, 2015
    Applicant: Celanese Internatinal Corporation
    Inventors: Radmila Wollrab, Iva Franjkic, Victor J. Johnston, Heiko Weiner
  • Process for the production of ethanol from an acetic acid feed and a recycled ethyl acetate feed
    Patent number: 9024083
    Abstract: The present invention produces ethanol in a reactor that comprises a catalyst composition and a feed stream comprising acetic acid and a recycled liquid stream comprising ethyl acetate. The catalyst composition comprises a first catalyst comprising platinum, cobalt, and/or tin and a second catalyst comprising copper. The crude ethanol product may be separated and ethanol recovered.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: May 5, 2015
    Assignee: Celanese International Corporation
    Inventors: Zhenhua Zhou, Iva Franjkic, Radmila Jevtic, Victor J. Johnston, David Lee, Heiko Weiner
  • Esterifying an ethanol and acetic acid mixture to produce an ester feed for hydrogenolysis
    Patent number: 8853470
    Abstract: Disclosed herein are processes for alcohol production by hydrogenating acetic acid to obtain a mixture of ethanol and acetic acid, esterifying the mixture to produce an esterification product and reducing the esterification product. The mixture may provide a sufficient amount of ethanol and acetic acid for esterification and reduces the need for additional acetic acid and/or ethanol. This may reduce the recycle of ethanol in the hydrogenolysis process and improve ethanol productivity.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: October 7, 2014
    Assignee: Celanese International Corporation
    Inventors: Victor J. Johnston, David Lee, Adam Orosco, R. Jay Warner, Heiko Weiner, Radmila Wollrab, Zhenhua Zhou, Emily Duff, Iva Franjkic
  • Process For The Production of Ethanol From An Acetic Acid Feed and A Recycled Ethyl Acetate Feed
    Publication number: 20120238785
    Abstract: The present invention produces ethanol in a reactor that comprises a catalyst composition and a feed stream comprising acetic acid and a recycled liquid stream comprising ethyl acetate. The catalyst composition comprises a first catalyst comprising platinum, cobalt, and/or tin and a second catalyst comprising copper. The crude ethanol product may be separated and ethanol recovered.
    Type: Application
    Filed: April 26, 2012
    Publication date: September 20, 2012
    Applicant: CELANESE INTERNATIONAL CORPORATION
    Inventors: Zhenhua Zhou, Iva Franjkic, Radmila Jevtic, Victor J. Johnston, David Lee, Heiko Weiner