Occidental Chemical Corporation

David E Albright

Michael C Savidakis

Charles M Cook

Mohan Singh Saran

Dean R Lagerwall

Chandrasekhar Krishnan

Kevin Zinke

David Harrigan

Disclosed is a method of making a mercaptan by reacting hydrogen sulfide with an olefin in the presence of a heterogeneous acidic catalyst. The catalyst can be made by calcining a mixture of a hydroxide, such as Zr(OH).sub.4 or Ti(OH).sub.4, with an acidic site donor, such as H.sub.2 SO.sub.4, (NH.sub.4).sub.2 SO.sub.4, or WO.sub.3.

Production of mercaptans using heterogeneous acidic catalysts

Disclosed is a process for reducing corrosion in a system in which aromatic hydrocarbons are separated from a mixture with aliphatic hydrocarbons. The aromatic hydrocarbons are extracted from the mixture using an extracting solvent. The aromatic hydrocarbons are stripped from the extracting solvent with steam and the steam is condensed to form water which is separated from the aromatic hydrocarbons. The separated water is passed through a basic anion exchange column and is then heated to produce the steam.

Process for reducing corrosion in a system for separating aromatic

Disclosed is a method of making a mercaptan by reacting an aliphatic alcohol with hydrogen sulfide in a continuous gaseous phase reaction. The reaction is performed in the presence of a catalyst which comprises a catalytically active carrier that contains base and/or acid active sites, an alkali metal or alkaline earth metal bicarbonate, carbonate, oxide, or hydroxide, and a transition metal acid or alkali metal or alkaline earth metal salt thereof. Selectivities of close to 100% are obtained.

Synthesis of mercaptans from alcohols

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Grand Island, NY, United States of America

David E Albright