What is the difference between zeigler Natta catalyst
and Philip's catalyst
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What is the difference between zeigler Natta catalyst and Philip's catalyst
1Please describe the difference between a heterogenous catalyst (like Ni on Carbon) and a homogeneous catalyst (like Wilkinson's catalyst) 2. Please provide a strategy to make cyclohexyl epoxide from cyclohexene. 3. Draw the intermediate for the addition of Cl2to cyclohexene. 4. Explain why one receives a racemic mixture from the following reaction. HBr CH3 +Enantiomer CH3
Identify the two important classes of catalysts and describe the difference between each. Choose a catalyst that exists in the human body. Explain its importance and how it works. Analyze the chemical reactions that take place when a biological catalyst combines with a reactant (substrate) to form an unstable intermediate.
6. Write chemical reactions for a generalized mechanism of a Ziegler-Natta polymerization of ethylene using TiCl4/AlCl2Et as the catalyst/co-catalyst for each of the following steps (curved arrows are not necessary): a. Monomer coordinates to the metal center b. Chain growth proceeds through the addition of further monomers by migratory insertion c. Termination occurs by a transfer reaction with the monomer, or d. Termination occurs by B-hydrogen elimination
6. Write chemical reactions for a generalized mechanism of a Ziegler-Natta polymerization of ethylene using TiCl/AICIEt as the catalyst/co-catalyst for each of the following steps (curved arrows are not necessary): a. Monomer coordinates to the metal center b. Chain growth proceeds through the addition of further monomers by migratory insertion c. Termination occurs by a transfer reaction with the monomer, or d. Termination occurs by B-hydrogen elimination
Polymer isotactic polypropylene vs atactic polypropylene question: In 1963, Karl Ziegler and Giulio Natta received the Nobel prize in chemistry for the development of a process that could be used to produce (among other things) linear, unbranched, isotactic polypropylene. Why was this an important development? What useful properties does isotactic polypropylene have when compared to atactic polypropylene? Describe some applications where isotactic polypropylene could be used, where it would be impractical to use atactic polypropylene. Include drawings that illustrate the...
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