Higher alcohols Ziegler process

Another source, catalytic oligomerization, which produces the alpha olefins using the Ziegler process mentioned above, has its own treatment in Chapter 21. But then the Oxo process really only replaces steps-three and four in Figure 15-3. Besides, Oxo higher alcohols still have branches. 

In 25 words or less, describe the differences between the Oxo process and the Ziegler process for making higher alcohols. 

Ziegler process. The chemistry of the Ziegler catalyst route to alpha olefins is the same as. you read in Chapter 15, The Higher Alcohols. The treatment here is another approach, and you might find it instructive. Or not. 

What is the difference between the Ziegler process for producing alpha olefins and the one described in Chapter 15 for producing higher alcohols ... 

In the higher alcohol process, the displacement is affected by oxidizing the trialkyl aluminum and then hydrolyzing, to form aluminum hydroxide and the linear alcohol. In the Ziegler process for alpha olefins, ethylene is used to displace the alpha olefin. 

Ethylene-derived alcohols were first produced in the early 1960s by two main processes. The hydroformylation process and the Ziegler chemistry are the most important commercial rontes today. The Ziegler process involves three basic steps (1) addition of ethylene to triethylalnmi-num to build the higher molecular weight trialkylaluminum called the ethylene growth product,... 

In the Ziegler process, alcohols of a distribution spectrum which corresponds to a Poisson distribution are obtained in a growth reaction from trialkylaluminium to which ethylene is added stepwise to give higher-molecular compounds [23]. These alcohols are exclusively straight-chain and are comparable to natural alcohols. 

Fundamental work on organoaluminum chemistry by Prof. Karl Ziegler and co-workers at the Max Planck Institute provided the basis for a commercial synthesis of even-carbon-numbered straight chain primary alcohols. These alcohols are identical with products derived from naturally occurring fats. In this process, ethylene is reacted with aluminum triethyl to form a higher aikylaluminum which then is oxidized and hydrolyzed to give the corresponding alcohols. 

With the Ziegler displacement process the higher alkyl group is displaced from the chain growth product by ethylene. This yields a mixture of even-numbered linear alpha olefins with the trialkyl aluminum being recycled. The odd-numbered linear alcohols are produced through hydroformylation of the olefin and hydrogenation of the odd-numbered aldehydes. 

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