Hydroformylation method and catalyst using rhodium-ruthenium dual metal and tetradentate phosphine ligand
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United States of America Patent
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Sep 8, 2020
Grant Date -
Nov 7, 2019
app pub date -
Jul 12, 2019
filing date -
Jan 12, 2017
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Abstract
A homogeneous catalytic reaction method and a catalyst for isomerization and hydroformylation of long-chain internal olefins are disclosed. A rhodium-ruthenium metal complex is used as a catalyst; and the ligands are tetradentate phosphine ligands. By means of the catalytic system, homogeneous internal olefin isomerization aid hydroformylation can be performed under a certain temperature and pressure to obtain aldehyde products having high normal to iso ratios. The present invention is applicable to not only long-chain internal olefins (≥C8) but also internal olefins having a carbon number less than 8.
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