Synthesis of aliphatic 1, 3-diols utilizing reduced ligand concentration and water extraction
申请人:——
公开号:US20030166977A1
公开(公告)日:2003-09-04
This invention is a process for synthesizing aliphatic 1,3-diols in one step by hydroformylation and hydrogenation of oxirane, carbon monoxide, and hydrogen employing a catalyst comprising a cobalt carbonyl compound and a cocatalyst metal compound ligated with a ligand in a ligand to cocatalyst metal atom molar ratio in the range of 0.2:1.0 to 0.6:1.0, optionally in the presence of a promoter, where recovery of product is preferably accomplished via water extraction of a diol rich phase from the bulk reaction mixture. The process modifications can, particularly in combination, be beneficial with respect to product recovery, catalyst recycle, and overall economics of a one-step process for producing aliphatic 1,3-diols.
本发明是一种通过环氧乙烷、一氧化碳和氢的加氢甲酰化和氢化一步合成脂族 1,3-二元醇的工艺,采用的催化剂包括羰基钴化合物和与配体配位的助催化剂金属化合物,配体与助催化剂金属原子摩尔比在 0.产品的回收最好通过从反应混合物中水萃取富含二元醇的相来完成。这些工艺改良,尤其是结合使用,可有利于产品回收、催化剂循环以及一步法生产脂肪族 1,3-二元醇的整体经济性。