Acrylic acid: spot the conditions flaw

Single question

Two-step industrial route to acrylic acid: propylene to acrolein, then acrolein to acrylic acid, both as vapor-phase oxidations over mixed-metal-oxide catalysts. The reactants, products, and catalyst class are right. Check the temperatures.

Vapor-phase catalytic oxidation

Catalyst light-off temperature

Industrial process conditions for acrylic acid

Find the flaw

Click the step that contains the flaw, or pick “No flaw” if you think every step is correct.

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