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A catalyst support is used mainly to

  • A.increase the volume of the reactor
  • B.disperse the active material widely
  • C.catalyse the reaction itself directly
  • D.poison the unwanted side reactions

Answer: B

Alumina or silica gives hundreds of square metres per gram on which a small amount of expensive metal can be spread. It also provides the mechanical strength the pellet needs in a bed. Hundreds of square metres per gram are usual.

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