Zinc aluminate with high specific surface area, preparation...

B - Operations – Transporting – 01 – J

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

B01J 23/06 (2006.01) B01D 53/56 (2006.01) B01D 53/94 (2006.01)

Patent

CA 2333426

The invention concerns a zinc aluminate characterised in that it has, after calcination at 800 ·C for 8 hours, a specific surface area of at least 85m?2¿/g. The invention also concerns a precursor composition of said aluminate. The method for preparing the aluminate and the composition comprises the following steps: contacting in a solvent medium a salt, a zinc sol or alkoxide and an aluminium alkoxide; hydrolyzing the resulting mixture by adding an amount of water in excess relative to the aluminium alkoxide; recuperating the formed precipitate and optionally drying it, thereby obtaining the precursor composition; if required, calcining said precipitate, thereby obtaining the aluminate. Finally, the invention concerns the use of aluminate for treating motor vehicle exhaust gases.

La présente invention concerne un aluminate de zinc qui est caractérisé en ce qu'il présente après calcination à 800 ~C, 8 heures une surface spécifique d'au moins 85 m2/g. L'invention concerne aussi une composition précurseur de cet aluminate. Le procédé de préparation de l'aluminate et de la composition comprend les étapes suivantes: on met en présence dans un milieu solvant un sel, un sol ou un alcoxyde de zinc et un alcoxyde d'aluminium; on effectue une hydrolyse du mélange ainsi formé par addition d'eau en une quantité en excès par rapport à l'alcoxyde d'aluminium; on récupère le précipité formé et on le sèche éventuellement, ce par quoi on obtient la composition précurseur; le cas échéant, on calcine ledit précipité, ce par quoi on obtient l'aluminate. Enfin, l'invention concerne l'utilisation de l'aluminate dans un procédé de traitement de gaz d'échappement d'automobiles.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Zinc aluminate with high specific surface area, preparation... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Zinc aluminate with high specific surface area, preparation..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Zinc aluminate with high specific surface area, preparation... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1422696

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.