Patent · US Expired

Hydrocracking with rare earth-containing Y zeolite compositions

US4565621A · kind A · utility

26Cited by
47References
25Claims
0Family size

Assignee

Inventor

Key dates

Filing dateJan 9, 1984
Grant dateJan 21, 1986
Priority date—
Expiry dateJan 9, 2004

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC10G65/12
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

Y Zeolites are prepared with rare earth cations and Group VIII metal cations exchanged thereinto, such zeolites being especially useful in hydrocracking catalysts. The zeolites of the invention are prepared by exchanging a sodium Y zeolite with cations of one or more rare earth elements followed by a calcination, an ammonium ion exchange, and a Group VIII metal cation exchange. The resultant zeolite is not only highly active for catalytically promoting hydrocracking reactions but is also, after use in hydrocracking environments resulting in coke deposition, essentially completely regenerable by combustion of the coke.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.