Patent · US Expired

Vapor phase oxidation of propylene to acrolein

US6437193B1 · kind B1 · utility

12Cited by

18References

11Claims

0Family size

Assignees

E.I. DU PONT DE NEMOURS AND COMPANY · US
Atofina · FR

Inventors

Rashmikant Maganlal Contractor · Ardentown, US
Mark William Andersen · Charlottesville, US
Daniel Campos · Atglen, US
Gerard Hecquet · Courbevoie, FR
Roland Kotwica · Pontpoint, FR
Charlotte Pham · Saverne, FR
Michel Simon · Ramonville-Saint-Agne, FR
Mireille Stojanovic · Paris, FR

Key dates

Filing date	Apr 6, 2000
Grant date	Aug 20, 2002
Priority date	—
Expiry date	Apr 6, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An improved method for the selective vapor phase oxidation of propylene to acrolein in a recirculating solids reactor system using a bismuth molybdate multimetal oxide involving specific reactant concentrations (preferably 5 mol % to 30 mol % propylene, 0 to 20 mol % oxygen, and the remainder inert gas), particle size (1 to 300 micrometers), temperature (250 to 450° C.) and gas (1 to 15 seconds) and solids (2 to 60 seconds) residence times. Such a process leads to improved selectivity and propylene conversion.

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