Catalytic oxidative dehydrogenation, and microchannel reactors for catalytic oxidative dehydrogenation
AssigneeVelocys, Inc.
InventorsJohn H. Brophy, Kai Jarosch, Terry J. Mazanec, Matthew B. Schmidt, Laura J. Silva, Anna Lee Tonkovich, Fred Pesa, David J. Hesse
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Abstract
Methods of oxidative dehydrogenation (ODH) is provided wherein conducting ODH in microchannels has unexpectedly been found to yield superior performance when compared to the same reactions at the same conditions in larger reactors. ODH methods employing a Mo—V—Mg—O catalyst is also described. Microchannel apparatus for conducting ODH is also disclosed.
Claims16
A method of oxidatively dehydrogenating a gaseous hydrocarbon with reduced gas phase reactions, comprising:
- flowing a hydrocarbon-containing fluid and a source of oxygen into a microchannel;
- wherein an oxidative dehydrogenation catalyst is present in the microchannel;
- and
- wherein the hydrocarbon-containing fluid and the source of oxygen are combined immediately before contacting the catalyst such that precatalyst contact time is 150 ms or less.
A method of oxidatively dehydrogenating a gaseous hydrocarbon with reduced gas phase reactions, comprising:
- flowing a hydrocarbon-containing fluid and a source of oxygen into a microchannel;
- wherein an oxidative dehydrogenation catalyst is present in the microchannel;
- and
- wherein the combined pressure of hydrocarbon-containing fluid and the source of oxygen in a feed stream is at least 10 atmospheres (when measured under standard conditions) and the precatalyst contact time of the hydrocarbon-containing fluid or the source of oxygen at a temperature of 300° C. or more is 15 ms or less.
A method of oxidatively dehydrogenating a gaseous hydrocarbon, comprising:
- flowing a hydrocarbon-containing fluid and a source of oxygen into a reaction chamber;
- wherein an oxidative dehydrogenation catalyst is present in the reaction chamber;
- wherein the oxidative dehydrogenation catalyst comprises an oxide catalyst comprising Mg, V and Mo, wherein the molar ratio of Mo:V is in the range of 0.5 to 2;
- reacting the hydrocarbon-containing fluid and the source of oxygen, in the reaction chamber, to form water and at least one alkene and/or aralkene.
Dependencies are inferred from the claim text.