Manufacture of tertiary mercaptans using zeolite catalysts
AssigneePennwalt Corporation
InventorBernard Buchholz
Life of this patent
Estimating the term…
Abstract
Certain synthetic zeolites have been found to provide high conversion over extended periods when used as catalysts in the addition reaction of hydrogen sulfide with branched, unsymmetrical olefins to produce tertiary mercaptans.
Claims14
A method for preparing tertiary mercaptans having from 4 to 18 carbon atoms comprising reacting hydrogen sulfide with a branched, unsymmetrical olefin or oligomer thereof, said olefin having the formula R.sub.1 R.sub.2 C=CR.sub.3 R.sub.4 where R.sub.1 and R.sub.2 are the same or different alkyl radicals, and R.sub.3 and R.sub.4 are independently either hydrogen or the same or different alkyl radicals, in the presence of a catalytic amount of a synthetic zeolite of the X or Y type having an alkali metal content, expressed as Na.sub.2 O, of less than 10 percent by weight.
Dependencies are inferred from the claim text.