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Fluid catalytic cracking uses a catalyst that is

  • A.vanadium pentoxide in pellet form
  • B.a zeolite circulated as a fine powder
  • C.platinum on alumina in fixed beds
  • D.nickel on a ceramic monolith support

Answer: B

The powder behaves as a fluid, which allows continuous circulation between reactor and regenerator. Platinum on alumina belongs to reforming and the other two to quite different industries. The fine powder is what allows continuous circulation.

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