Process P.sup.1 for the manufacture of a secondary fatty alcohol, said process P.sup.1 comprising synthesizing an internal ketone K1 by a process P.sup.0 comprising the decarboxylative ketonization reaction of a fatty acid or the like in a liquid phase with a metal compound as catalyst in a reaction medium, wherein a ketone K.sup.2 at liquid state, which is identical or similar to the internal ketone K.sup.1, is introduced into the reaction medium, and subjecting the internal ketone K.sup.1 to a hydrogenation reaction with hydrogen gas as hydrogenating agent to form the secondary fatty alcohol. Use of the secondary fatty alcohol manufactured by the process P.sup.1 for the manufacture of an internal olefin or of an internal olefin sulfonate.

Process P.sup.1 for the manufacture of a secondary fatty alcohol, said process P.sup.1 comprising synthesizing an internal ketone K1 by a process P.sup.0 comprising the decarboxylative ketonization reaction of a fatty acid or the like in a liquid phase with a metal compound as catalyst in a reaction medium, wherein a ketone K.sup.2 at liquid state, which is identical or similar to the internal ketone K.sup.1, is introduced into the reaction medium, and subjecting the internal ketone K.sup.1 to a hydrogenation reaction with hydrogen gas as hydrogenating agent to form the secondary fatty alcohol. Use of the secondary fatty alcohol manufactured by the process P.sup.1 for the manufacture of an internal olefin or of an internal olefin sulfonate.

Process P.sup.1 for the manufacture of a secondary fatty alcohol, said process P.sup.1 comprising synthesizing an internal ketone K1 by a process P.sup.0 comprising the decarboxylative ketonization reaction of a fatty acid or the like in a liquid phase with a metal compound as catalyst in a reaction medium, wherein a ketone K.sup.2 at liquid state, which is identical or similar to the internal ketone K.sup.1, is introduced into the reaction medium, and subjecting the internal ketone K.sup.1 to a hydrogenation reaction with hydrogen gas as hydrogenating agent to form the secondary fatty alcohol. Use of the secondary fatty alcohol manufactured by the process P.sup.1 for the manufacture of an internal olefin or of an internal olefin sulfonate.

The present invention relates to novel uses of stable inorganic peroxoacids as catalysts in the preparation of alkanesulfonic acids from alkanes and sulfur trioxide, methods for the production of alkanesulfonic acids employing said catalysts as well as reaction mixtures comprising said catalysts. The invention particularly relates to the production of methanesulfonic acid from methane and sulfur trioxide employing stable inorganic peroxoacids as catalysts.

The present invention relates to novel uses of stable inorganic peroxoacids as catalysts in the preparation of alkanesulfonic acids from alkanes and sulfur trioxide, methods for the production of alkanesulfonic acids employing said catalysts as well as reaction mixtures comprising said catalysts. The invention particularly relates to the production of methanesulfonic acid from methane and sulfur trioxide employing stable inorganic peroxoacids as catalysts.

The present invention relates to novel uses of stable inorganic peroxoacids as catalysts in the preparation of alkanesulfonic acids from alkanes and sulfur trioxide, methods for the production of alkanesulfonic acids employing said catalysts as well as reaction mixtures comprising said catalysts. The invention particularly relates to the production of methanesulfonic acid from methane and sulfur trioxide employing stable inorganic peroxoacids as catalysts.

The present invention relates to an improved process for the production of alkanesulfonic acids.

The present invention relates to an improved process for the production of alkanesulfonic acids.

The present invention relates to an improved process for the production of alkanesulfonic acids.

Provided is an industrially advantageous method for producing an alkanedisulfonic acid compound easily and inexpensively with a high yield. The present invention is a method for producing an alkanedisulfonic acid compound comprising reacting at least one alkanesulfonic acid compound having a specific structure and at least one complex having a Lewis base and sulfur trioxide to thereby obtain an alkanedisulfonic acid compound. According to the production method of the present invention, it is possible to produce an alkanedisulfonic acid compound easily and inexpensively with a high yield, which is industrially advantageous.