摘要:
Olefins are produced by the reductive dehydroxylation of vicinal polyols or esters thereof, or a combination thereof, in a liquid reaction medium, under a hydrogen atmosphere, at a temperature from 50° C. to 250° C., in the presence of a halogen-based, preferably iodine-based, catalyst. Examples of the catalyst, which may be included independently or generated in situ, are iodine (I2), hydroiodic acid (HI), iodic acid (HIO3), lithium iodide (LiI), and combinations thereof.
摘要:
Olefms may be produced by the non-reductive dehydroxylation of vicinal polyols and/or their respective esters, in a liquid reaction medium, under a substantially non- reductive atmosphere, in the presence of a halogen-based, preferably iodine-based, catalyst. The reaction medium may be aqueous, non- aqueous, or a combination thereof, and may in some embodiments include a solubility enhancing agent.
摘要:
Polyether polyols, derivatives and combinations thereof are converted to olefins under reductive or non-reductive dehydroxylation conditions, in the presence of a halogen-based catalyst. Derivatives include polyether polyols incorporated in polyurethanes. The process includes gas pressure from 1 psig (˜6.89 KPa) to 2000 psig (˜13.79 MPa), a temperature from 50° C. to 250° C., a liquid reaction medium, and a molar ratio of the starting material to halogen atoms from 1:10 to 100:1.