Title:
【発明の名称】ビニルグリコールの不飽和ジオールへの異性化
Document Type and Number:
Japanese Patent JP2000516232
Kind Code:
A
Abstract:
This invention relates to a process for the isomerization of a vinyl glycol to an unsaturated diol in the presence of a rhenium-based catalyst; and to a catalyst for said isomerization. More specifically, this invention relates to the isomerization of 3-butene-1,2-diol to 2-butene-1,4-diol; and to a process for the manufacture of 1,4-butanediol involving the step of isomerizing 3-butene-1,2-diol to 2-butene-1,4-diol in the presence of said catalyst. The catalyst is characterized in that it comprises a transition metal on a carrier wherein the carrier is a zeolite Y type substance containing silicon and aluminum in a mole ratio of from about 1.5:1 to about 1000:1, and the transition metal is rhenium or a rhenium compound and mixtures thereof present in an amount of from about 0.1 to about 50 weight percent based on total combined weight of the carrier and of the rhenium or rhenium compound and mixtures thereof.
Inventors:
Remance, Thomas Yeah.
Jacobs, Pierre A.
Martens, Ioann
Van Oeferen, Dominique A. He.
Stagin, Massias, Ha. Ha.
Jacobs, Pierre A.
Martens, Ioann
Van Oeferen, Dominique A. He.
Stagin, Massias, Ha. Ha.
Application Number:
JP50983198A
Publication Date:
December 05, 2000
Filing Date:
August 08, 1997
Export Citation:
Assignee:
The Dow Chemical Company
International Classes:
B01J23/36; B01J29/16; C07C29/56; C07C33/035; (IPC1-7): C07C29/56; B01J23/36; C07C33/035
Attorney, Agent or Firm:
Takashi Ishida (4 others)