Question

The catalyst used for olefin polymerization is-
A) Ziegler-Natta catalyst
B) Wilkinson’s catalyst
C) Raney Nickel catalyst
D) Merrifield resin

Answer 1

Hint: Olefins are the alkenes with general formulae, ${{C}_{n}}{{H}_{2n}}$ where n is the number of carbon atoms in the molecule.
Organoaluminium compound acts as the co-catalyst in this catalyst system.

Complete step by step answer:
So here in the question we have to select the correct catalyst which is used for the olefin polymerization.
Polymerization is a chemical reactions in which small units called as the monomers undergoes continuous addition by the elimination of small molecules like $N{{H}_{3}}$,${{H}_{2}}O$ etc. and forms a continuous linked chain called as the polymers.
In olefin polymerization, the alkene is the monomer and it is undergoing the polymerization reaction.
We know that olefin polymerization is one of the most important polymerization reactions and the catalyst used in this polymerization is the Ziegler-Natta catalyst.
The name Ziegler-Natta catalyst was named after two scientists, Karl Ziegler and Giulio Natta.
This catalyst is used for the polymerization of the $\alpha \text{-olefines}$ with stereoselectivity and with high linearity.
Ziegler-Natta catalysts generally consist of two parts – i.e. a transition metal part and an organoaluminum compound which is the co-catalyst.
Transition metals can be $Ti,Zr$ and $Hf$. And the organoaluminium compounds are the trialkyl aluminium compounds.
The most commonly used Ziegler-Natta catalyst system is a combination of –Titanium tetrachloride $\left( TiC{{l}_{4}} \right)$ and Triethyl aluminium ${{\left( {{C}_{2}}{{H}_{5}} \right)}_{3}}Al$.
So Ziegler-Natta catalyst is -$TiC{{l}_{4}}+{{\left( {{C}_{2}}{{H}_{5}} \right)}_{3}}Al$$TiC{{l}_{4}}+{{\left( {{C}_{2}}{{H}_{5}} \right)}_{3}}Al$

The correct option for the question, the catalyst used for the olefin polymerization is option (A), Ziegler-Natta catalyst.

Note: Wilkinson’s catalyst is a coordination complex catalyst of Rhodium, with the formulae, $\left[ RhCl{{\left( PP{{h}_{3}} \right)}_{3}} \right]$ and Ph= phenyl ring. This catalyst is mainly used for the hydrogenation of the alkenes.
Raney nickel is the Ni catalyst with high surface area and this catalyst can be used for the hydrogenation of almost all the functional groups.
Merrifield resin is a cross-linked polystyrene resin and it possesses chloromethyl as the functional group.