Patents by Inventor Chengguan Yang

Chengguan Yang 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 the production of a core/shell zeolitic material having a CHA framework structure
    Patent number: 9334170
    Abstract: The present invention relates to a process for the preparation of a zeolitic material having a CHA framework structure, said zeolitic material comprising zeolite crystals having a core-shell structure, wherein said process comprises the steps of (1) providing a mixture comprising one or more sources for Z2O5, one or more sources for X2O3, optionally one or more structure directing agents, and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises YO2, X2O3, and optionally Z2O5, and wherein the seed crystals have a diameter of 450 nm or greater; (2) crystallizing the mixture provided in (1) to afford zeolite crystals comprising a core of seed crystal provided in step (1) and a shell crystallized on the seed crystal; wherein Z is a pentavalent element, Y is a tetravalent element, and X is a trivalent element.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: May 10, 2016
    Assignees: BASF SE, Tokyo Institute of Technology
    Inventors: Bilge Yilmaz, Ulrich Müller, Feng-Shou Xiao, Takashi Tatsumi, Dirk de Vos, Xinhe Bao, Weiping Zhang, Hermann Gies, Hiroyuki Imai, Bart Tijsebaert, Limin Ren, Chengguan Yang
  • Process For The Production Of A Core/Shell Zeolitic Material Having A CHA Framework Structure
    Publication number: 20130101503
    Abstract: The present invention relates to a process for the preparation of a zeolitic material having a CHA framework structure, said zeolitic material comprising zeolite crystals having a core-shell structure, wherein said process comprises the steps of (1) providing a mixture comprising one or more sources for Z2O5, one or more sources for X2O3, optionally one or more structure directing agents, and seed crystals having a CHA framework structure, wherein the CHA framework structure of the seed crystals comprises YO2, X2O3, and optionally Z2O5, and wherein the seed crystals have a diameter of 450 nm or greater; (2) crystallizing the mixture provided in (1) to afford zeolite crystals comprising a core of seed crystal provided in step (1) and a shell crystallized on the seed crystal; wherein Z is a pentavalent element, Y is a tetravalent element, and X is a trivalent element.
    Type: Application
    Filed: September 14, 2012
    Publication date: April 25, 2013
    Applicants: Tokyo Institute of Technology, BASF SE
    Inventors: Bilge Yilmaz, Ulrich Müller, Feng-Shou Xiao, Takashi Tatsumi, Dirk de Vos, Xinhe Bao, Weiping Zhang, Hermann Gies, Hiroyuki Imai, Bart Tijsebaert, Limin Ren, Chengguan Yang