Patents by Inventor Julius Scherzer

Julius Scherzer 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: 5298153
    Abstract: An attrition resistant catalytic cracking catalyst is prepared by spray drying an aqueous slurry containing a molecular sieve having cracking activity, a clay such as kaolin, a silica sol and aluminum chlorhydroxide. The resultant catalyst has a high attrition resistance as compared to commercially available cracking catalysts.
    Type: Grant
    Filed: October 31, 1990
    Date of Patent: March 29, 1994
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4987110
    Abstract: An attrition resistant catalytic cracking catalyst is prepared by spray drying an aqueous slurry containing a molecular sieve having cracking activity, a clay such as kaolin, a silica sol and aluminum chlorhydroxide. The resultant catalyst has a high attrition resistance as compared to commercially available cracking catalysts.
    Type: Grant
    Filed: May 31, 1989
    Date of Patent: January 22, 1991
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4880521
    Abstract: Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock under cracking conditions with a cracking catalyst having a surface area of at least 150 m.sup.2 /gm and comprising greater than about 25 weight percent of a Y zeolite dispersed in a matrix containing a synthetic silica-alumina component in which the weight ratio of silica-to-alumina is preferably equal to or greater than about 0.10.
    Type: Grant
    Filed: February 17, 1989
    Date of Patent: November 14, 1989
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4810369
    Abstract: Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock under cracking conditions with a cracking catalyst having a surface area of at least 150 m.sup.2 /gm and comprising greater than about 25 weight percent of a rare earth exchanged Y zeolite dispersed in a matrix containing a synthetic silica-alumina component in which the weight ratio of silica-to-alumina is equal to or greater than about 0.5.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: March 7, 1989
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4747935
    Abstract: Hydrocarbon feedstocks containing relatively high levels of nitrogen contaminants are converted by catalytic cracking to products of lower average molecular weight by contacting the feedstock with a mixture of a cracking catalyst and separate particles of a nitrogen scavenger comprising microporous solids selected from the group consisting of acid clays; hydrogen or ammonium exchanged mordenite, clinoptilolite, chabazite and erionite; mineral acids or mineral acid precursors supported on an inorganic, refractory oxide; and Catapal alumina.
    Type: Grant
    Filed: March 26, 1986
    Date of Patent: May 31, 1988
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4588496
    Abstract: Hydrocarbon feedstocks containing relatively high levels of metal contaminants, such as nickel and vanadium, are converted via catalytic cracking into products of lower average molecular weight by contacting the feedstock with a catalyst comprising a (1) porous, inorganic refractory oxide component and (2) a dealuminated Y zeolite having a silica-to-alumina mole ratio above about 6.0. The dealuminated Y zeolite is preferably prepared by contacting an ammonium-exchanged Y zeolite having a silica-to-alumina mole ratio below about 6.0 with an aqueous solution of ammonium hexafluorosilicate. The refractory oxide component will preferably contain alumina and a clay such as kaolin. The catalyst may also contain a nondealuminated Y zeolite, preferably one that has been ion exchanged with rare earth cations. Typically, the hydrocarbon feedstock will contain contaminant metals in sufficient quantities such that their concentration exceeds about 4.0 ppmw Nickel Equivalents.
    Type: Grant
    Filed: January 3, 1985
    Date of Patent: May 13, 1986
    Assignee: Union Oil Company of California
    Inventor: Julius Scherzer
  • Patent number: 4512961
    Abstract: Faujasite-type zeolites of high catalytic activity, low coke-forming property and stable crystalline structure are prepared by using a combination of hydrothermal treatment and ion exchange resin removal of aluminum from the crystalline structure of the zeolites. The process allows for a substantial increase of the silica-to-alumina ratio in the zeolite without detrimentally affecting the strength of the structure.
    Type: Grant
    Filed: August 22, 1983
    Date of Patent: April 23, 1985
    Assignee: Harshaw/Filtrol
    Inventors: Julius Scherzer, Adrian P. Humphries
  • Patent number: 4477336
    Abstract: Cracking of hydrocarbons with a mixture of acid dealuminated, rare earth metal exchanged Y-zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of more than about 6 and not more than about 300, and non-dealuminated rare earth metal exchanged Y-zeolite and a matrix.
    Type: Grant
    Filed: July 11, 1983
    Date of Patent: October 16, 1984
    Assignee: Harshaw/Filtrol Partnership
    Inventor: Julius Scherzer
  • Patent number: 4476239
    Abstract: Preparation of fluid catalytic cracking catalysts is improved by incorporating a viscosity-reducing agent, having the general formula of Al.sub.2 (OH).sub.5 NO.sub.3, in the aqueous slurry containing the catalyst components of zeolite, clay, aluminous binder, and a silica source, prior to drying of the slurry. The viscosity-reducing additive allows an increase in the solids content of the aqueous slurry and thus improves the efficiency of the drying operation.
    Type: Grant
    Filed: May 4, 1983
    Date of Patent: October 9, 1984
    Assignee: Harshaw/Filtrol Partnership
    Inventors: Robert L. Chiang, Julius Scherzer
  • Patent number: 4443553
    Abstract: In the process of preparing fluid catalytic cracking catalysts where an aqueous slurry, containing a zeolite, or zeolites, an alumina-containing binder, a clay and a silica source, is subjected to drying to form essentially water-free solid catalyst particles, the viscosity of the aqueous slurry can be significantly reduced by incorporation of a small but effective amount of [Al.sub.2 (OH).sub.6-y Cl.sub.y ].sub.x additive. Due to this decrease in viscosity, the solids content of the slurry can be raised until the original, additive-free viscosity level, is reached, which, in turn, results in increased solids throughput rate in the drying step with corresponding savings of thermal energy and improved catalyst production efficiency.
    Type: Grant
    Filed: September 20, 1982
    Date of Patent: April 17, 1984
    Assignee: Harshaw/Filtrol Partnership
    Inventors: Robert L. Chiang, Julius Scherzer
  • Patent number: 4347164
    Abstract: A zeolite containing catalyst which is associated with finely dispersed metal is formed by decomposing a compound, whose anion contains a metal and a (CN) radical, which has been deposited on the host catalyst.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: August 31, 1982
    Assignee: Filtrol Corporation
    Inventor: Julius Scherzer
  • Patent number: 4332782
    Abstract: A pseudoboehmite having properties suitable for incorporation into a matrix for a zeolite containing catalyst and the process for producing the same from an aluminum sulfate derived gel.
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: June 1, 1982
    Assignee: Filtrol Corporation
    Inventors: Julius Scherzer, Anh-Thu Liu
  • Patent number: 4313923
    Abstract: Method of producing pseudoboehmite by reacting an aluminum salt with an aluminate.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: February 2, 1982
    Assignee: Filtrol Corporation
    Inventors: Thomas E. Block, Julius Scherzer
  • Patent number: 4297325
    Abstract: The production process for pseudoboehmite from leach liquors produced in the acid treatment of clays, which liquors contain Fe and alkaline earth ions.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: October 27, 1981
    Assignee: Filtrol Corporation
    Inventors: Julius Scherzer, Anh-Thu Liu, Yih-Yau Sun
  • Patent number: 4079019
    Abstract: Attrition resistant and stable catalyst composition comprising crystalline aluminosilicate zeolites e.g. rare earth exchanged zeolites dispersed in an inorganic matrix containing synthetic amorphous silica-alumina and clay are prepared by a process which reduces the level of polluting ammonium salts by eliminating the use of ammonium hydroxide in the steps prior to primary filtration. During the synthesis of the amorphous inorganic matrix wherein alkali metal silicate and aluminum salt solutions are gelled and subsequently combined with zeolitic materials, the ammonia reagent is replaced by non-polluting additives such as magnesium or calcium hydroxides (or oxides) prior to a primary filtration stage without decreasing the catalytic activity of the resulting zeolite promoted hydrocarbon conversion catalysts.
    Type: Grant
    Filed: February 18, 1976
    Date of Patent: March 14, 1978
    Assignee: W. R. Grace & Co.
    Inventors: Julius Scherzer, David Evan William Vaughan, John Storey Magee
  • Patent number: 3966643
    Abstract: A novel mixed rare earth-transition metal exchanged faujasite is prepared by exchanging alkali metal faujasite with a mixture of rare earth and transition metal salts at a pH of about 3.5. The novel faujasite, which contains 0.2 to 3% transition metal and 2 to 14% rare earths, (both ranges expressed as oxides), is used as a hydrocarbon conversion catalyst or as a component in a zeolite promoted hydrocarbon conversion catayst.
    Type: Grant
    Filed: February 15, 1974
    Date of Patent: June 29, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Julius Scherzer, Philip K. Maher