Process for preparing a high-density and middle-porosity catalyst, supported on a siliceous matrix, based on vanadium
CA 1333171 C · Owner: Nardini, Renzo · Inventors: Cavalli, Luigi; Nardini, Renzo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing a high-density and middle-porosity catalyst, supported on a siliceous matrix based on, vanadium, oxygen and alkali metals wherein the V2O5 content, ranges from 6 to 9% by weight the K2O content ranges from 8.5, to 12% by weight and the particle density ranges from 0.90 to 1.40 g/cm3 and wherein furthermore:, - the volume of the pores is from 0.30 to 0.70 cm3/g and the surface area is from 0.30 to 3 m2/g, the average radius of the pores being from 650 to 2200 nanometers; - the SiO2 content is equal to or lower than 75% by weight and the Fe2O3 content is equal to or higher than 0.90% by weight.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 22, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 22, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.