Method of making analogues of .beta.-alumina
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 17, 1995
Issued Date -
N/A
app pub date -
Jan 17, 1995
filing date -
Nov 9, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention provides a method of making an analogue of .beta.'-alumina, the analogue having a layered .beta.'-alumina spinel-type structure in which ate least some of the Na ions in the layers of Na ions separated by layers of Al and O ions in said .beta.'-alumina spinel-type structure are replaced by substitute metal cations. The substitute metal cations are mono-, d- and/or trivalent. The method comprises dispersing in a boehmite having a well developed and highly ordered crystal structure at least one oxide of the substitute metal cations or a precursor thereof to form a starting mixture, and heating the mixture to a conversion temperature at which it is converted to the analogue.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully