Conversion, Selectivity, and Kinetics of the Dehydration of 1-Pentanol ...
2004年12月16日 · Selectivity, yield, and kinetics of the liquid-phase dehydration of 1-pentanol to di-n-pentyl ether were studied experimentally over a commercial gel-type ion-exchange resin with 4% of cross-linkin...
Dehydration of 1-pentanol to di-n-pentyl ether catalyzed by a ...
2006年7月10日 · A good selectivity, more than 90%, and an excellent yield can be achieved in the DNPE synthesis by 1-pentanol dehydration at 130–155 °C using a gel-type acidic resin. It is the result of shifting the equilibrium point to DNPE formation through the removal of the formed water during the chemical reaction by distillation and reflux of the ...
Dehydration of 1-pentanol to di- n -pentyl ether over ion …
2002年5月31日 · The dehydration reaction of 1-pentanol to di-n-pentyl ether (DNPE) and water in the liquid phase was studied at 110–180 °C and 1 MPa on sulfonic styrene–divinylbenzene (S/DVB) copolymers and the perfluoroalkanesulfonic resin NR50. S/DVB-based catalysts were macroreticular and gel-type resins both sulfonated conventionally and oversulfonated.
Dehydration of 1-pentanol to di-n-pentyl ether catalyzed by a ...
2006年7月10日 · DNPE can be obtained by dehydration of 1-pentanol using a gel-type acidic resin with a good selectivity, slightly higher than 90%, and with an excellent yield, as a result of shifting the equilibrium to the side of DNPE on removing the formed water by distillation and refluxing the organic phase in the temperature range 130–155 °C at ...
Water effect on the kinetics of 1-pentanol dehydration to di-
Experiments performed at 433 K and 453 K with 1-pentanol/water and 1-pentanol/DNPE (di-n-pentyl ether) clearly states the inhibiting effect of water released in the liquid-phase dehydration of 1-pentanol to DNPE on ion-exchange resin.
8 The effect of water on the kinetics of the liquid-phase dehydration of 1-pentanol to di-n-9 pentyl ether (DNPE) and water over Amberlyst 70 is revisited. To explain the strong 10 inhibitor effect of water, two approaches were compared. Firstly, a model stemming from a
Kinetics of 1-Pentanol Etherification without Water Removal
The effect of water on the kinetics of the liquid-phase dehydration of 1-pentanol to di-npentyl ether (DNPE) and water over Amberlyst 70 is revisited. To explain the strong inhibitor effect of water, two approaches were compared.
Elimination Reactions of Alcohols - Master Organic Chemistry
2015年4月16日 · All About Elimination Reactions of Alcohols (With Acid) The hydroxyl group of alcohols is normally a poor leaving group. However, when treated with strong acid, R-OH is converted into R-OH 2 (+) and H 2 O is a much better leaving group. With tertiary alcohols, H 2 O can then leave, resulting in a carbocation.
Liquid-phase dehydration of 1-octanol, 1-hexanol and 1-pentanol …
2011年4月15日 · It is shown in literature that ion exchange resins are suitable catalysts for the synthesis of di-n-pentyl ether (DNPE). Microporous resins below 423 K, and thermostable resin Amberlyst 70 in the range 423–463 K, catalyze the dehydration reaction of 1-pentanol to DNPE with selectivity to DNPE higher than 95% and high reaction rates [15], [16].
Use of Ion-Exchange Resins in Dehydration Reactions
2019年2月5日 · The production of DNPE by 1-pentanol dehydration in liquid phase has been realized at 110–180 °C and 1 MPa, in the presence of different types of sulfonic styrene–divinylbenzene copolymers (Amberlyst-type, CT-x, Dowex, among others) and a perfluoroalkanesulfonic resin (Nafion NR50).