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Rashmikant Maganlal Contracter

Mark William Andersen

Gerard Hecquet

Michel Simon

Roland Kotwica

Mireille Stojanovic

Charlotte Pham

Jean B Myers

An improved method for manufacturing acrylic acid by vapor phase oxidation of propylene in a single step or reaction stage using as solid phase oxidant a mixture of two particulate solids comprising a bismuth molybdate multimetal oxide (e.g., Mo,Co,Bi,Fe,W,Si,K,O,) and a molybdenum vanadate multimetal oxide (e.g., Mo,V,Sr,W,Cu,O,). Such a process is advantageously carried out in a recirculating solids reactor system wherein the particulate mixture of solids in an oxidized state reacts with a feed gas containing propylene in a vertical riser reactor and after separation from the acrylic acid gaseous product the particulate mixture of solids in a reduced state is regenerated by contact with an oxygen containing gas in a separate regeneration reactor before recirculation to the riser for further reaction.

Vapor phase catalytic oxidation of propylene to acrylic acid

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Wilmington, DE, United States of America

Rashmikant Maganlal Contracter