Commonly used catalyst in the preparation of acrylonitrile from propylene, ammonia and oxygen is :

silver

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bismuth molybdate

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caesium chloride

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nickel

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Solution

The correct option is B bismuth molybdate
Acrylonitrile is manufactured by using Sohio technology involving ammoxidation of propylene. In this technique, propylene, ammonia and oxygen are allowed to react over bisumth molybdate. $H C N$ and acetonitile are also obtained along with acrylonitrile which are removed by distillation.

$C H_{3} C H = C H_{2} + N H_{3} + O_{2} B i_{2} O_{3} \cdot n M o O_{3} - -------- \to$ $C H_{2} = C H - C N a c r y l o n i t r i l e + H_{2} O + H C N + C H_{3} C N + C O_{2} + C O$

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