Patents by Inventor James A. Brennan

James A. Brennan 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: 4269783
    Abstract: A method is disclosed for the conversion of a syngas to a liquid hydrocarbon product having a boiling range of less than 400.degree. F. at a 90% overhead and being a predominantly olefinic product, wherein the olefins have substantially internal double bonds. The method for accomplishing this stated result involves an improvement in the method for the conversion of synthesis gas by contacting the same with a catalyst composite comprising a mixture of a Fischer-Tropsch catalyst and a volume excess of an acidic catalyst, e.g., silica-alumina or a crystalline aluminosilicate zeolite and wherein the activity of the acidic component is balanced with the activity of the Fischer-Tropsch component so as to maximize the yield of desired olefinic product.
    Type: Grant
    Filed: March 7, 1977
    Date of Patent: May 26, 1981
    Assignee: Mobil Oil Corporation
    Inventors: James A. Brennan, Philip D. Caesar, Julius Ciric, William E. Garwood, Robert E. Holland
  • Patent number: 4239927
    Abstract: In producing synthetic hydrocarbon oils by polymerization of olefins using aluminum halide as the catalyst, organic halides are produced. These are corrosive to metal equipment and are poisonous to certain hydrogenation catalysts. This invention is concerned with reacting such organic halides with an aromatic hydrocarbon in a system also containing the polyolefins thus forming an alkylation product with both reactants prior to removal of the aluminum chloride catalyst.
    Type: Grant
    Filed: April 5, 1979
    Date of Patent: December 16, 1980
    Assignee: Mobil Oil Corporation
    Inventors: James A. Brennan, Henry D. Norris
  • Patent number: 4207208
    Abstract: A method is disclosed for the treatment of single particle iron-containing syngas (synthes.s gas) conversion catalysts comprising iron, a crystalline acidic aluminosilicate zeolite having a silica to alumina ratio of at least 12, a pore size greater than about 5 Angstrom units and a constraint index of about 1-12 and a matrix. The catalyst does not contain promoters and the treatment is applicable to either the regeneration of said spent single particle iron-containing catalyst or for the initial activation of fresh catalyst. The treatment involves air oxidation, hydrogen reduction, followed by a second air oxidation and contact of the iron-containing single particle catalyst with syngas prior to its use for the catalytic conversion of said syngas. The single particle iron-containing catalysts are prepared from a water insoluble organic iron compound.
    Type: Grant
    Filed: December 18, 1978
    Date of Patent: June 10, 1980
    Assignee: Mobil Oil Corporation
    Inventors: Stanley J. Lucki, James A. Brennan
  • Patent number: 4149960
    Abstract: An improved processing technique is provided for gas oil pour point reduction and dewaxing. The improved technique comprises contacting an appropriate gas oil feedstock with a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica/alumina mole ratio of at least 12 and a constraint index, hereinafter defined, within the approximate range of 1 to 12 in the presence of a relatively large amount of co-fed water. The amount of co-fed water is maintained at from about 0.5 to about 15 moles of water/mole of gas oil feedstock.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: April 17, 1979
    Assignee: Mobil Oil Corporation
    Inventors: William E. Garwood, Philip D. Caesar, James A. Brennan
  • Patent number: 4150062
    Abstract: An improved processing technique is provided for conversion of olefins of 2 to 4 carbon atoms to product comprising high octane gasoline components. Embodiments of the present improved processing technique include conversion of light olefins to high octane olefinic gasoline components, and conversion of light olefins to high octane aromatic gasoline components.The improved technique comprises contacting an appropriate light olefin feedstock with a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica/alumina mole ratio of at least 12 and a constraint index, hereinafter defined, within the approximate range of 1 to 12 in the presence of a relatively large amount of co-fed water. The amount of co-fed water is maintained at from about 0.5 to about 15 moles of water/mole of olefin feedstock.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: April 17, 1979
    Assignee: Mobil Oil Corporation
    Inventors: William E. Garwood, Philip D. Caesar, James A. Brennan
  • Patent number: 4125457
    Abstract: Hydrocarbon lubricating oils are upgraded by removing polar compounds contained therein and improving the oxidation stability thereof using an acidified sorbent, such as alumina, silica-alumina or bauxite treated with anhydrous HCl, anhydrous HBr, aqueous (NH.sub.4).sub.2 SO.sub.4 or H.sub.2 SO.sub.4. The acidified sorbent contains at least 3%, by weight of the acidified sorbent, of Cl.sup.-, Br.sup.- or SO.sub.4 .sup.= ions. The process of upgrading the lube oils is carried out at a temperature ranging from ambient to about 250.degree. F and LHSV of 0.1 - 10.
    Type: Grant
    Filed: September 2, 1977
    Date of Patent: November 14, 1978
    Assignee: Mobil Oil Corporation
    Inventors: James A. Brennan, Stanley J. Lucki
  • Patent number: 4078990
    Abstract: Certain acidic heterogeneous catalysts produce large yields of benzene, toluene and xylene from alkyl aromatics of at least nine carbon atoms by a mechanism different from the classical disproportionation reaction characteristic of acid catalysts. Typically, aromatic mixtures so derived from such stocks have unusually low content of ethyl benzene, thus greatly simplifying separation of xylene isomers.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: March 14, 1978
    Assignee: Mobil Oil Corporation
    Inventors: James A. Brennan, Roger A. Morrison
  • Patent number: 3997621
    Abstract: Oligomerization of alpha olefins catalyzed by boron trifluoride is controlled to yield desired trimer as a dominant product by adding small amounts of ester together with water or alcohol promoter.
    Type: Grant
    Filed: March 17, 1975
    Date of Patent: December 14, 1976
    Assignee: Mobil Oil Corporation
    Inventor: James A. Brennan
  • Patent number: 3945913
    Abstract: Certain acidic heterogeneous catalysts produce large yields of benzene, toluene and xylene from alkyl aromatics of at least nine carbon atoms by a mechanism different from the classical disproportionation reaction characteristic of acid catalysts. These catalysts are characterized by a zeolite of the ZSM-5 type or zeolite ZSM-12 or zeolite ZSM-21. The reaction has the unique function of providing aliphatic by-products of higher molecular weight than is to be expected by splitting side chains from benzene rings. Typically, aromatic mixtures so derived from such charge stocks have unusually low content of ethyl benzene, thus greatly simplifying separation of xylene isomers.
    Type: Grant
    Filed: August 26, 1974
    Date of Patent: March 23, 1976
    Assignee: Mobil Oil Corporation
    Inventors: James A. Brennan, Roger A. Morrison