One-step production of 1, 3-propanediol from ethylene oxide and syngas with a catalyst with a N-heterocyclic ligand
申请人:——
公开号:US20030060668A1
公开(公告)日:2003-03-27
Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, cobalt-ruthenium-2,2′-bipyrimidine, 2,2′-dipyridyl, or 2,4,6-tripridyl-s-triazine catalyst precursors in cyclic ether solvents, such as 1,3-dioxolane, 1,4-dioxolane, 1,4-dioxane, and 2-ethyl-2-methyl-1,3-dioxolane, provide good yields of 1,3-PDO in a one step synthesis.
本发明公开了一种新的催化剂组合物,该催化剂组合物由与 N-杂环配体络合的双金属 Co-Ru 催化剂组成,在以环氧乙烷和合成气为原料一步合成 1,3-丙二醇(1,3-PDO)的过程中,该催化剂组合物既有效又经济,并能提高氧化稳定性。例如,在环醚溶剂(如 1,3-二氧戊环、1,4-二氧戊环、1,4-二氧六环和 2-乙基-2-甲基-1,3-二氧戊环)中的钴-钌-2,2′-联嘧啶、2,2′-二吡啶或 2,4,6-三(s-tripridyl-s-triazine)催化剂前体可在一步合成中提供良好的 1,3-PDO 产率。