Patents by Inventor Huei-Cheng Liu

Huei-Cheng Liu 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).

  • Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene
    Patent number: 4499318
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Li, Ce, Cr, and Ag; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventor: Huei-Cheng Liu
  • Modified zeolite catalyst composition and process for alkylating toluene with methanol to form styrene
    Patent number: 4499317
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: July 2, 1984
    Date of Patent: February 12, 1985
    Assignee: Exxon Research & Engineering Co.
    Inventors: Huei-Cheng Liu, Ralph J. Spohn
  • Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
    Patent number: 4483937
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Li, Ce, Cr, and Ag; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventor: Huei-Cheng Liu
  • Modified zeolite catalyst composition for alkylating toluene with methanol to form styrene
    Patent number: 4483936
    Abstract: A modified zeolite catalyst composition and process for using the catalyst composition to alkylate toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) is disclosed. The catalyst composition is exemplified by a type X- or Y-zeolite modified with (1) at least one alkali metal selected from Cs, K, and Rb; (2) at least one metal selected from Mn, Fe, Cu, and Zn; and (3) boron and/or phosphorus.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: November 20, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: Huei-Cheng Liu, Ralph J. Spohn
  • Process for alkylating toluene with methanol to form styrene using a low sodium content potassium/cesium modified zeolite catalyst composition
    Patent number: 4463204
    Abstract: A process for alkylating toluene (or derivative thereof) with methanol to form e.g. styrene and ethylbenzene (or derivatives thereof) using a modified low sodium content zeolite catalyst composition is disclosed. The zeolite catalyst composition is exemplified by a type X- or Y-zeolite modified with potassium and cesium through a sequential exchange.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: July 31, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventor: Huei-Cheng Liu