Vapor Pressures of Dilute Aqueous tert-Butyl Alcohol: How Dilute Is the Henry's Law Region? [Erratum to document cited in CA122:249399]

1995 ◽  
Vol 99 (32) ◽  
pp. 12370-12370
Author(s):  
Yoshikata Koga
Keyword(s):  
Butyl Alcohol ◽  
Henry's Law ◽  
Vapor Pressures ◽  
Tert Butyl ◽  
Henry’S Law ◽  
Tert Butyl Alcohol

scholarly journals The construction of thermodynamic expressions needed in the physicochemical mathematical model required for the rational quantitative evaluation of the freeze drying process of pharmaceutical solutions employing tertiary butyl alcohol as a co-solvent

2018 ◽  
Author(s):  
Athanasios I Liapis ◽  
Jee-Ching Wang ◽  
Roberto Bruttini
Keyword(s):  
Mass Transfer ◽  
Freeze Drying ◽  
Knudsen Diffusion ◽  
Butyl Alcohol ◽  
Gas Mixture ◽  
Vapor Pressures ◽  
Tertiary Butyl ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Binary Gas Mixture

A thermodynamic model employing the UNIFAC (Dortmund) method was developed to determine the currently unavailable partial vapor pressures of the binary gas mixture of water and tert-butyl alcohol (TBA) in equilibrium with their frozen solid mixtures. The results agree satisfactorily with the experimental data and indicate that TBA has higher vapor pressures which lead to higher total pressures at the moving interface that could result in larger total pressure gradients and convective mass transfer rates in the dried layer during primary drying. But the higher total pressures reduce the magnitude of the bulk diffusivity of the gas mixture and combined with the smaller Knudsen diffusivity of TBA could significantly impact the competing mass transfer mechanisms during freeze drying.   Keywords: Freeze drying; Water and tert-butyl alcohol (TBA); UNIFAC (Dortmund); Partial vapor pressures; Convective flow and bulk and Knudsen diffusion

Thermodynamic and Kinetic Investigation of the Solvent Effect on the Oxidation of [Co(en)2SCH2COO]+ with S2O82- In Water-Methanol and Water-tert-Butyl Alcohol Mixtures

1993 ◽  
Vol 58 (5) ◽  
pp. 1001-1006 ◽  
Author(s):  
Oľga Vollárová ◽  
Ján Benko
Keyword(s):  
Transfer Functions ◽  
Activation Parameters ◽  
Butyl Alcohol ◽  
Oxidation Of Co ◽  
Kinetics Of Oxidation ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Alcohol Mixtures ◽  
Kinetics Of

The kinetics of oxidation of [Co(en)2SCH2COO]+ with S2O82- was studied in water-methanol and water-tert-butyl alcohol mixtures. Changes in the reaction activation parameters ∆H≠ and ∆S≠ with varying concentration of the co-solvent depend on the kind of the latter, which points to a significant role of salvation effects. The solvation effect on the reaction is discussed based on a comparison of the transfer functions ∆Ht0, ∆St0 and ∆Gt0 for the initial and transition states with the changes in the activation parameters accompanying changes in the CO-solvent concentration. The transfer enthalpies of the reactant were obtained from calorimetric measurements.

scholarly journals Impacts of Sn(II) doping on the Keggin heteropolyacid-catalyzed etherification of glycerol with tert-butyl alcohol

2021 ◽  
pp. 116913
Author(s):  
Márcio José da Silva ◽  
Diego Morais Chaves ◽  
Sukarno Olavo ferreira ◽  
Rene Chagas da Silva ◽  
Jose Balena Gabriel Filho ◽  
...  
Keyword(s):  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol

Selective alkylation of naphthalene with tert-butyl alcohol over HY zeolites modified with acid and alkali

2008 ◽  
Vol 9 (10) ◽  
pp. 1982-1986 ◽  
Author(s):  
Yingli Wang ◽  
Lei Xu ◽  
Zhengxi Yu ◽  
Xinzhi Zhang ◽  
Zhongmin Liu
Keyword(s):  
Butyl Alcohol ◽  
Tert Butyl ◽  
Tert Butyl Alcohol ◽  
Selective Alkylation ◽  
Hy Zeolites
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