Process for preparing 1,3-alkanediols from 3-hydroxyesters
AssigneesSamsung Electronics Co., Ltd., Korea Research Institute of Chemical Technology
InventorsByeong No Lee, Eun Joo Jang, Jung Ho Lee, Hyung Rok Kim, Yo Han Han, Hyun Kwan Shin, Ho Sun Lee
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Abstract
A process for preparing an 1,3-alkanediol from a 3-hydroxyester includes hydrogenating a 3-hydroxyester in an alcohol-containing solvent in the presence of a hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and then aging the particles following addition of colloidal silica thereto. Novel hydrogenation catalysts so prepared are also disclosed.
Claims21
A process for preparing a 1,3-alkanediol from a 3-hydroxyester, which comprises the step of hydrogenating a 3-hydroxyester in the presence of a catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles and then aging the particles following the addition of colloidal silica thereto.
A hydrogenation catalyst for preparing a 1,3-alkanediol from a 3-hydroxyester, the catalyst being prepared by a process comprising the steps of (i) adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles, and subsequently (ii) aging the particled following the addition of colloidal silica thereto.
A hydrogenation catalyst prepared by adding an alkaline precipitator to an aqueous solution containing a copper salt to form particles and then aging the particles following the addition of colloidal silica thereto,
- wherein the catalyst further comprises at least one promotor selected from the group consisting of Re, Pd, Ru, Pt, Rh, Ag, Se, Te, Mo and Mn.
Dependencies are inferred from the claim text.