Physical properties of binary mixtures of (t-butyl methyl ether + alcohols) fromT= 288.15K toT= 298.15K

1999 ◽  
Vol 31 (8) ◽  
pp. 1009-1023 ◽  
Author(s):  
A Rodrı́guez ◽  
J Canosa ◽  
J Tojo
Keyword(s):  
Physical Properties ◽  
Binary Mixtures ◽  
Methyl Ether ◽  
Butyl Methyl Ether

Excess volumes for binary mixtures of n-butyl methyl ether with n-alkanes at 298.15 K

1990 ◽  
Vol 35 (3) ◽  
pp. 242-244 ◽  
Author(s):  
Luo Wang ◽  
George C. Benson ◽  
Benjamin C. Y. Lu
Keyword(s):  
Binary Mixtures ◽  
Methyl Ether ◽  
Excess Volumes ◽  
Butyl Methyl Ether

Crystal Structures of Two New Cyclosporin Clathrates

2000 ◽  
Vol 65 (12) ◽  
pp. 1950-1958 ◽  
Author(s):  
Michal Hušák ◽  
Bohumil Kratochvíl ◽  
Ivana Císařová ◽  
Alexandr Jegorov
Keyword(s):  
Crystal Structures ◽  
Methyl Ether ◽  
Van Der Waals ◽  
Van Der Waals Interactions ◽  
Solvent Molecules ◽  
Butyl Methyl Ether

Two isomorphous clathrates formed by dihydrocyclosporin A or cyclosporin V with tert-butyl methyl ether are reported and compared with the structures of related P21-symmetry cyclosporin clathrates. The cyclosporin molecules in both structures are associated via van der Waals interactions forming cavities occupied by solvent molecules (cyclosporin : tert-butyl methyl ether is 1 : 2).

scholarly journals Significance of the particle physical properties and the Geldart group in the use of correlations for the prediction of minimum fluidization velocity of biomass–sand binary mixtures

2021 ◽  
Author(s):  
Louis Edwards Cáceres-Martínez ◽  
Diana Carolina Guío-Pérez ◽  
Sonia Lucía Rincón-Prat
Keyword(s):  
Physical Properties ◽  
Binary Mixtures ◽  
Minimum Fluidization Velocity ◽  
Fluidization Velocity ◽  
Minimum Fluidization ◽  
Mass Fractions ◽  
Char Particle ◽  
Geldart Groups ◽  
Biomass Particles

AbstractThe present study explores the relevance of the physical properties of biomass particles on the determination of the minimum fluidization velocity (Umf) of binary mixtures. Fluidization experiments were performed in a cold flow unit with diverse biomasses mixed with sand in different mass fractions. Gas velocity and pressure drop across the bed were used to determine Umf. Different correlations reported in the literature were evaluated on their ability to accurately predict Umf of the mixtures. Results showed satisfactory predictions when appropriately identifying correlations according to the corresponding Geldart groups for the biomass particles. This perspective opens new possibilities toward the generalization of correlation factors and helps in improving the accuracy of the prediction for highly heterogeneous mixtures. The methodology also allows the analysis of mixtures for which the experimental approach is difficult, such as those including char particle, with the only requirement of carefully measuring the physical properties of the particles.

Storage Stability of Solvent-Free Condensates of Functionalized Trialkoxysilanes

1999 ◽  
Vol 576 ◽  
Author(s):  
S. Stein ◽  
St. Cramer V. Clausbruch ◽  
N. Moszner ◽  
V. Rheinberger Ivoclar Ag
Keyword(s):  
Methyl Ether ◽  
Storage Stability ◽  
Solvent Free ◽  
Residual Silanol Groups ◽  
Acid Catalyzed ◽  
Chemical Conditions ◽  
Degree Of Condensation ◽  
Hydrolysis Of ◽  
Initial Viscosity ◽  
Butyl Methyl Ether

ABSTRACTThe lack of storage stability of organic-inorganic solvent-free sols is a well-known problem. We investigated the influence of different solvents in the acid catalyzed hydrolysis of various sols on their storage stability. Our experiments were based on two different silanes, 3-methacryloxypropyltrimethoxysilane (MPTS) and 1,1,1-tris(allyloxymethyl)-l-[[[3-(triethoxysilyl)propyl]aminocarbonyl]oxymethyl]methane (silane 31), synthesized by reaction of pentaerythritol triallyl ether and 3-isocyanatopropyltriethoxysilane. The employed solvents were alcohol, tetrahydofuran and tert-butyl methyl ether in a range of 95 wt% to 30 wt% in solution. In order to get comparable chemical conditions the degree of condensation of the various sols were adjusted between 75% and 85%. Furthermore, the sols were modified by silylation with trimethylchlorosilane. A comparison of silylated and not silylated silane 31 clearly showed that a decrease in residual silanol groups increase the storage stability. The results of the investigations demonstrated that both the kind and the amount of solvent used in hydrolysis affects the initial viscosity of solvent-free condensates of silane 31 and MPTS.

tert-Butyl methyl ether C5H12O + C8H18 2,2,4-Trimethylpentane

2007 ◽  
pp. 1-1
Author(s):  
I. Wichterle ◽  
J. Linek ◽  
Z. Wagner ◽  
J.-C. Fontaine ◽  
K. Sosnkowska-Kehiaian ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Tert Butyl ◽  
Butyl Methyl Ether

tert-Butyl methyl ether C5H12O + C8H18 2,2,4-Trimethylpentane

2007 ◽  
pp. 1-1
Author(s):  
I. Wichterle ◽  
J. Linek ◽  
Z. Wagner ◽  
J.-C. Fontaine ◽  
K. Sosnkowska-Kehiaian ◽  
...  
Keyword(s):  
Methyl Ether ◽  
Tert Butyl ◽  
Butyl Methyl Ether
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