Catalytic Dehydration of 1-Hexanol and 1-Octanol

Abstract

be in considerable degree interpreted on the assumption that the initial process is the attachment of one water molecule to each polar aminoacid side chain. The data also indicate that peptide carbonyl and imido groups usually do not bind water, because of their mutual interaction by hydrogen-bond formation, but that water is bound by carbonyl groups which are not coupled by hydrogen bonds with imido groups. In salmin, in which most of the amino-acid residues are polar, these polar residues codperate to attach one water molecule jointly to two polar groups in the initial process of hydration.

Vapor-Phase Dehydration of Dodecanol over Alumina

“…of mercury), (2) 22-hour period at 302°C. and constant flow rate, (3) four feed rates at 302°C ., (4) four feed rates at 318 °C., (5) four feed rates at 339°C ., (6) four feed rates at 358°C ., (7) two feed rates at 339°C ., (8) two feed rates at 318°C ., and (9) two feed rates at 302°C. Each condition of temperature and feed rate was maintained for 4 hours.…”

“…Furthermore, studies of olefin and ether formation have not. been reported for the higher normal aliphatic primary alcohols, although several studies on the dehydration of such alcohols to olefins appear (8,4,8).…”

“…The Firestone Tire & Rubber Company, Akron, Ohio THE successful blending of GR-S and Hevea latices is dependent largely on the compatibility of the stabilizing system characteristic of each type of latex. Thus, the final stability of the blend will be determined by the degree of interaction between either the soap and inorganic salts present in the synthetic system with proteins, or their degradation products, and other ammonium salts which contribute to the stability of natural latex (1,8). For example, it has been known for some time that surface active agents in general (2,15,17) and soaps in particular (7,11) when added to aqueous solutions of proteins will produce marked changes in the physical condition of the protein molecule.…”

Catalyst Recycling in the Reactive Distillation of Primary Alcohols to Olefins Using a Phosphoric Acid Catalyst

“…1,2 The dehydration of octanol over alumina goes as far back as 1945 when Raman studies were conducted during the reaction. 35 More recently, Kim et al have shown a successful dehydration of 1-octanol over Al 2 O 3 at 300 °C and a liquid hourly space velocity of 7 h −1 , reaching an octanol conversion of 65% with a high selectivity toward 1octene over 50%. 36 They improved the selectivity further to 95% with almost full conversion at 400 °C by introducing a barium impregnation of 2 wt % to the alumina catalyst.…”

“…Due to the aforementioned market of octene for the production of LLDPE, the dehydration of octanol has been investigated in depth. , The dehydration of octanol over alumina goes as far back as 1945 when Raman studies were conducted during the reaction . More recently, Kim et al have shown a successful dehydration of 1-octanol over Al 2 O 3 at 300 °C and a liquid hourly space velocity of 7 h –1 , reaching an octanol conversion of 65% with a high selectivity toward 1-octene over 50% .…”