Patents by Inventor Zoya P. Lukina

Zoya P. Lukina 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: 4399051
    Abstract: A method for regenerating of rhodium-containing catalysts exhausted and sulphur-poisoned in the course of dealkylating alkyl benzenes or mixture thereof with steam or hydrogen, comprising the steps of burning out coke deposits by an oxygen-containing gas and chlorinating the catalyst with chlorine or with a chlororganic compound in a flow of hydrogen, an inert gas or a mixture of an inert gas with oxygen and moisture. The catalyst is additionally treated with ammonia or with a nitrogen-containing compound capable of decomposing under the treatment to yield ammonia in the presence of at least one component selected from the group consisting of: water, hydrogen, and nitrogen-oxygen mixture. The treatment can be conducted both in the liquid and the gaseous phases at temperatures ranging between 20.degree. and 650.degree. C. and at a pressure between 1 and 50 atm.The present invention can be used for regeneration of rhodium-containing catalysts and used for dealkylating alkyl benzenes with steam or hydrogen.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: August 16, 1983
    Inventors: Georgy L. Rabinovich, Zoya P. Lukina, Kira L. Volkova, Viktor N. Mozhaiko
  • Patent number: 4288347
    Abstract: A catalyst for dealkylating alkyl benzenes and fractions of aromatized benzines by means of steam conversion is disclosed. The catalyst comprises rhodium or rhodium in a mixture with another noble metal from Group VIII of the Periodic System in an amount of 0.1 to 2 wt. % on a carrier of aluminum oxide and also at least one of the elements selected from the group consisting of sulfur, selenium or lead in an amount of 0.003 to 3 wt. %. To increase the yield of the final product, the catalyst also comprises at least one element selected from the group containing iron, cobalt, nickel, chrome, copper, and vanadium in an amount of 0.01 to 5 wt. %, and at least one of the elements of the alkaline or alkaline earth metals or mixtures thereof in an amount of 0.01 to 5 wt. %.The proposed catalyst features a high degree of selectivity for dealkylating alkyl benzenes in combination with a high degree of starting feed conversion.
    Type: Grant
    Filed: June 18, 1979
    Date of Patent: September 8, 1981
    Inventors: Georgy L. Rabinovich, Gdal N. Maslyansky, Ljubov M. Birjukova, Emmanuil A. Levitsky, Kira L. Volkova, Zoya P. Lukina, Viktor N. Mozhaiko