Patents Represented by Attorney Ann M. Mareschal
  • Patent number: 8343335
    Abstract: In a method of forming a shaped body, a mixture is formed comprising a particulate silica-rich material, water and a potassium base or basic salt, wherein the total solids content of the mixture is from about 20 to about 90 weight percent. The mixture is extruded into extrudates and the extrudates are dried and heated to a temperature of from about 300° C. to about 800° C. to form the shaped body.
    Type: Grant
    Filed: February 21, 2008
    Date of Patent: January 1, 2013
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Jean W. Beeckman, Theodore E. Datz, Glenn R. Sweeten, Jason Wu
  • Patent number: 8003074
    Abstract: A process for producing ZSM-48 comprises crystallizing an aqueous reaction mixture comprising at least one source of silica, at least one source of alumina, at least one source of hydroxyl ions, at least one source of diquaternary alkylammonium, R2+, ions having the formula: (CH3)3N+(CH2)5N+(CH3)3 and optionally ZSM-48 seed crystals, wherein said reaction mixture has a composition including the following molar ratios: R2+:SiO2 less than 0.1 SiO2:Al2O3 less than 100 OH?:SiO2 less than 0.2.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: August 23, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Wenyih Frank Lai, Wieslaw J. Roth, Robert E. Kay, Christine N. Elia
  • Patent number: 7935330
    Abstract: The present invention relates to new methods of making crystalline materials, as well as to new crystalline materials obtainable by such methods, and their use in hydrocarbon conversion processes. In one of its aspects, the invention relates to a method for preparing a crystalline molecular sieve comprising oxides of one or more tetravalent element(s), optionally one or more trivalent element(s), and optionally one or more pentavalent element(s), said method comprising submitting to crystallization conditions one or more sources of said oxides in the presence of at least one organic templating agent R of formula C1C2R1R2N+ A? (I), in which C1 and C2 each independently represent a substituted or unsubstituted cyclohexyl or cyclopentyl group, R1 and R2 each independently represent a methyl group, an ethyl group or a propyl group, or R1 and R2 together with the nitrogen atom they are connected to form a ring containing 5 or 6 atoms, and A represents hydroxyl, fluorine, chlorine, bromine or iodine.
    Type: Grant
    Filed: September 7, 2007
    Date of Patent: May 3, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Guang Cao