Hydrocarbons - Result Question 32
####34. In preparation of alkene from alcohol using $Al_2 O_3$ which is effective factor?
[2001]
(a) Temperature
(b) Concentration
(c) Surface area of $Al_2 O_3$
(d) Porosity of $Al_2 O_3$
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Solution:
- (a) Reaction conditions for alcohol in preparation of alkenes are :
$ \begin{aligned} R-CH_2-CH_2 OH \xrightarrow[350^{\circ}-380^{\circ} C]{Al_2 O_3} \\ R-CH=CH_2+H_2 O \end{aligned} $
At $220^{\circ}-250^{\circ} C$ it forms ether.
