Hydroformylation of olefins with the water soluble HRh(CO)[P(m-C6H4SO3Na)3]3 in supported aqueous-phase. Is it really aqueous?

1990 ◽  
Vol 6 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Istv�n T. Horv�th
Keyword(s):  
Aqueous Phase ◽  
Water Soluble ◽  
Supported Aqueous Phase

Supported Aqueous-Phase Palladium Catalysts for the Reaction of Allylic Substitution:  Toward an Understanding of the Catalytic System

1998 ◽  
Vol 17 (1) ◽  
pp. 78-89 ◽  
Author(s):  
Sylvia dos Santos ◽  
Yuye Tong ◽  
Françoise Quignard ◽  
Agnès Choplin ◽  
Denis Sinou ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Catalytic System ◽  
Palladium Catalysts ◽  
Allylic Substitution ◽  
Supported Aqueous Phase

Hydroformylation by supported aqueous-phase catalysis: a new class of heterogeneous catalysts

Nature ◽  
1989 ◽  
Vol 339 (6224) ◽  
pp. 454-455 ◽  
Author(s):  
Juan P. Arhancet ◽  
Mark E. Davis ◽  
Joseph S. Merola ◽  
Brian E. Hanson
Keyword(s):  
Aqueous Phase ◽  
Heterogeneous Catalysts ◽  
New Class ◽  
Supported Aqueous Phase ◽  
Aqueous Phase Catalysis

New water soluble chelating phosphines for aqueous phase catalysis

1997 ◽  
Vol 124 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Hao Ding ◽  
Jianxing Kang ◽  
Brian E. Hanson ◽  
Christian W. Kohlpaintner
Keyword(s):  
Aqueous Phase ◽  
Water Soluble ◽  
Chelating Phosphines ◽  
Aqueous Phase Catalysis

Hydrocarboxylation of olefins by supported aqueous-phase catalysis

2015 ◽  
Vol 247 ◽  
pp. 147-154 ◽  
Author(s):  
Zhenhong He ◽  
Zhenshan Hou ◽  
Yagang Zhang ◽  
Tianfu Wang ◽  
Yierxiati Dilixiati ◽  
...  
Keyword(s):  
Aqueous Phase ◽  
Supported Aqueous Phase ◽  
Aqueous Phase Catalysis

scholarly journals Explicit modeling of volatile organic compounds partitioning in the atmospheric aqueous phase

2013 ◽  
Vol 13 (2) ◽  
pp. 1023-1037 ◽  
Author(s):  
C. Mouchel-Vallon ◽  
P. Bräuer ◽  
M. Camredon ◽  
R. Valorso ◽  
S. Madronich ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Water Content ◽  
Gas Phase ◽  
Aqueous Phase ◽  
Water Soluble ◽  
Chemical Mechanism ◽  
Organic Species ◽  
Cloud Water Content ◽  
Isoprene Oxidation

Abstract. The gas phase oxidation of organic species is a multigenerational process involving a large number of secondary compounds. Most secondary organic species are water-soluble multifunctional oxygenated molecules. The fully explicit chemical mechanism GECKO-A (Generator of Explicit Chemistry and Kinetics of Organics in the Atmosphere) is used to describe the oxidation of organics in the gas phase and their mass transfer to the aqueous phase. The oxidation of three hydrocarbons of atmospheric interest (isoprene, octane and α-pinene) is investigated for various NOx conditions. The simulated oxidative trajectories are examined in a new two dimensional space defined by the mean oxidation state and the solubility. The amount of dissolved organic matter was found to be very low (yield less than 2% on carbon atom basis) under a water content typical of deliquescent aerosols. For cloud water content, 50% (isoprene oxidation) to 70% (octane oxidation) of the carbon atoms are found in the aqueous phase after the removal of the parent hydrocarbons for low NOx conditions. For high NOx conditions, this ratio is only 5% in the isoprene oxidation case, but remains large for α-pinene and octane oxidation cases (40% and 60%, respectively). Although the model does not yet include chemical reactions in the aqueous phase, much of this dissolved organic matter should be processed in cloud drops and modify both oxidation rates and the speciation of organic species.

Erhöhung der Katalyseaktivität bei der Hydroformylierung von Acrylsäuremethylester durch Verwendung von Zweiphasen- und “Supported-Aqueous-Phase”-Systemen

1995 ◽  
Vol 107 (13-14) ◽  
pp. 1608-1610 ◽  
Author(s):  
Georges Fremy ◽  
Jean-François Carpentier ◽  
Yves Castanet ◽  
Eric Monflier ◽  
André Mortreux
Keyword(s):  
Aqueous Phase ◽  
Supported Aqueous Phase

Selective Transport of Water-Soluble Proteins from Aqueous to Ionic Liquid Phase via a Temperature-Sensitive Phase Change of These Mixtures

2012 ◽  
Vol 65 (11) ◽  
pp. 1548 ◽  
Author(s):  
Yuki Kohno ◽  
Nobuhumi Nakamura ◽  
Hiroyuki Ohno
Keyword(s):  
Phase Change ◽  
Aqueous Phase ◽  
Selective Dissolution ◽  
Selective Extraction ◽  
Soluble Proteins ◽  
Water Soluble ◽  
Temperature Sensitive ◽  
Salting Out ◽  
Key Factor ◽  
The Difference

Mixtures of some ionic liquids (ILs) and water show reversible phase change between a homogeneous mixture and phase-separated state by a small change in temperature. Some water-soluble proteins have been migrated from the aqueous to the IL phase. When tetrabutylphosphonium 2,4,6-trimethylbenzenesulfonate was used as an IL, cytochrome c (Cyt.c) was found to be extracted from the water phase to the IL phase. Conversely, both horseradish peroxidase (HRP) and azurin remained in the aqueous phase. This selective extraction was comprehended to be due to the difference in solubility of these proteins in both phases. The separated aqueous phase contained a small amount of IL, which induced the salting-out of Cyt.c. On the other hand, condensed IL phase promoted the salting-in of Cyt.c. As a result, Cyt.c was preferably dissolved in the hydrated IL phase rather than aqueous phase. In the case of HRP, there was only a salting-out profile upon increasing the concentration of IL, which induced selective dissolution of HRP in the aqueous phase. These results clearly suggest that the profile of salting-out and salting-in for proteins is the key factor to facilitate the selective extraction of proteins from aqueous to the IL phase.

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