The original cobalt catalyst made aldehydes is up to a 4:1 normal-to branched ratio. Shell's more
thermally stable cobalt triorganophosphine catalyst now achieves a ratio of 8:1 at lower pressure
,and it's easier to recycle. In 50 years shall has produced some 47 billion Ib plasticizer and surfactant
alcohols.
At Eastman ,they do things a little different and want a rhodium catalyst system that can easily be
turned so they can make substantial quantities of both normal and isomers to meet business needs as
demanded by seasonal market.
From CEN Apr 22,2013 P.38-40.
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