Journal of Chemical and Engineering Data p. 1946 - 1952 (2006)
Update date:2022-08-18
Topics:
Shevelyova, Marina P.
Zaitsau, Dzmitry H.
Paulechka, Yauheni U.
Kabo, Gennady J.
Verevkin, Sergey P.
The thermodynamics of one of the byproducts of caprolactam production, 2-(1′-hydroxycyclohexyl)cyclohexanone (ketol), have been studied in this work. Saturated vapor pressure for liquid and crystalline ketol was measured by the Knudsen method in the temperature ranges from (308.2 to 330.4) K and from (289.6 to 300.8) K, respectively. Additionally, the saturated vapor pressures over ketol in the undercooled state and in the liquid were measured by the transpiration method in the temperature range from (287.9 to 303.0) K and from (308.0 to 351.5) K, respectively. The enthalpy of vaporization and the enthalpy of sublimation of ketol at the average temperatures studied were obtained indirectly from the temperature dependence of the vapor pressure measured by the Knudsen method as well as by the transpiration method. Furthermore, the standard molar enthalpy of sublimation was measured directly at 303.1 K using calorimetry. The entropy of ketol in the vapor state at (320.8 and 298.2) K was derived. The thermodynamic properties for 2-(1′-hydroxycyclohexyl) cyclohexanone in the ideal gas state were calculated from statistical mechanic calculations in the broad temperature range from (50 to 1000) K. The gaseous thermodynamic equilibrium constant K° (at 332.1 K) for cyclohexanone auto-condensation (side reaction of the caprolactam production) leading to 2-(1′-hydroxycyclohexyl)cyclohexanone was assessed.
View MoreShifang Taifeng New Flame Retardant Co., Ltd
Contact:02884721008
Address:tingjiang industrial park, hefeng town
guide(suzhou) fine materials co. ltd
Contact:0512-80972173
Address:21st Building, No.369 Lushan Rd, New District Suzhou China 215129
Contact:86-536-8866010
Address:NO.4455 EAST FUSHOU ST. WEIFANG DEVELOPMENT ZONE, SHANDONG, CHINA
JOY (TIANJIN) TECHNOLOGY AND DEVELOPMENT CO., LTD.
Contact:+86-22-66666666
Address:Tianjin
Contact:+8613400661290
Address:No 908,Kangwan Rd, Liuyang Economic
Doi:10.1021/jo00051a026
(1992)Doi:10.1002/ardp.19773101015
(1977)Doi:10.1021/ja00882a050
(1962)Doi:10.1021/acs.organomet.0c00720
(2021)Doi:10.1016/j.carres.2011.05.021
(2011)Doi:10.1016/0022-328X(84)80123-0
(1984)