Nickel complexes with long-chain primary amines

1970 ◽  
Vol 9 (12) ◽  
pp. 2800-2801 ◽  
Author(s):  
S. F. Pavkovic ◽  
B. Rapp
Keyword(s):  
Nickel Complexes ◽  
Primary Amines ◽  
Long Chain

Mesostructured Zirconium Oxide

1996 ◽  
Vol 431 ◽  
Author(s):  
P. Liu ◽  
J. S. Reddy ◽  
A. Adnot ◽  
A. Sayari
Keyword(s):  
Zirconium Oxide ◽  
Cetyltrimethylammonium Bromide ◽  
Potassium Phosphate ◽  
Primary Amines ◽  
Swelling Agent ◽  
Synthesis Parameters ◽  
Lamellar Phases ◽  
Quaternary Ammonium Surfactants ◽  
Synthesized Materials ◽  
Long Chain

AbstractThe supramolecular templating technique was used to synthesize both hexagonal (Hx- ZrO2) and lamellar (L-ZrO2) phases of zirconium oxide. Under the conditions used in this work, the use of long chain primary amines and quaternary ammonium surfactants resulted in the exclusive formation of lamellar and hexagonal phases, respectively. The use of long chain cetyldimethylamine afforded a mixture of a hexagonal and a lamellar phases. Effects of synthesis parameters such as the ZrO2/surfactant ratio, ZrO2/water ratio, the nature of surfactant, the crystallization temperature and time on the formation of mesostructured ZrO2 were also studied. Addition of 1,3,5-trimethylbenzene (TMB) as a swelling agent led, in the presence of cetyltrimethylammonium bromide, to the formation of a lamellar phase rather than to pore enlargement. These materials were characterized by XRD, FTIR, XPS and EDX techniques. Regardless of their structure, the as-synthesized materials collapsed upon calcination. Treatment with monobasic potassium phosphate followed by calcination at 350 °C led to the formation of a stable porous Zr–P oxide with a surface area as high as 540 m2/g.

Effect of Brine Concentration on the Krafft Point of Long Chain Primary Amines

2007 ◽  
Vol 46 (3) ◽  
pp. 295-300 ◽  
Author(s):  
J.S. Laskowski ◽  
M. Pawlik ◽  
A. Ansari
Keyword(s):  
Krafft Point ◽  
Primary Amines ◽  
Brine Concentration ◽  
Long Chain

A Raman spectroscopic study of molecular interaction in long-chain primary amines systems

1982 ◽  
Vol 13 (1) ◽  
pp. 56-62 ◽  
Author(s):  
A. M. Amorim da Costa ◽  
C. F. G. C. Geraldes ◽  
J. J. C. Teixeira-Dias
Keyword(s):  
Spectroscopic Study ◽  
Molecular Interaction ◽  
Primary Amines ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Long Chain

Solubilization of water in non-polar solvents by cationic detergents

1951 ◽  
Vol 208 (1095) ◽  
pp. 542-551 ◽  
Keyword(s):  
Freezing Point ◽  
Micelle Formation ◽  
Primary Amines ◽  
Binding Agent ◽  
Polar Solvents ◽  
Free Amine ◽  
Solubilizing Power ◽  
Cationic Detergents ◽  
Fatty Acid Salts ◽  
Long Chain

Solubilization of water in common organic solvents by fatty acid salts of long-chain (C 12 —C 18 ) aliphatic primary amines was studied. It was found that, of all the salts from formate to palmitate and oleate, dodecylamine- n -butyrate and octadecylamine propionate solubilize most in xylene, the figure reaching about 29 molecules of H 2 O /mole of soap. Additions of free amine enhanced solubilization, while free butyric acid decreased the intake. Our viscosity and freezing-point measurements of the same systems indicated that the additive is most likely to form a complex with soap micelles, and that their solubilizing power is modified thereby. Freezing-point measurements of detergent solutions with and without the solubilized phase showed, surprisingly enough, that the dissolved water elevates the freezing-points considerably, showing that solubilized water acts as a binding agent between micelles and probably promotes micelle formation. The results are discussed and correlated on Winsor’s theory of solubilization.

Direct oxidation of amines to nitriles in the presence of ruthenium-terpyridyl complex immobilized on ILs/SILP

2015 ◽  
Vol 5 (5) ◽  
pp. 2696-2704 ◽  
Author(s):  
Octavian Dumitru Pavel ◽  
Peter Goodrich ◽  
Liliana Cristian ◽  
Simona M. Coman ◽  
Vasile I. Pârvulescu ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Heterogeneous Catalyst ◽  
Primary Amines ◽  
Direct Oxidation ◽  
Supported Ionic Liquids ◽  
Long Chain ◽  
Efficient Heterogeneous Catalyst

Ru2Cl4(az-tpy)2 was immobilized within a range of supported ionic liquids on silica. SILP operates as an efficient heterogeneous catalyst in oxidation of long chain linear primary amines to corresponding nitriles.

scholarly journals Competition between hydrogen bonding and dispersion interactions in the crystal structures of the primary amines

CrystEngComm ◽  
2014 ◽  
Vol 16 (19) ◽  
pp. 3867-3882 ◽  
Author(s):  
Andrew G. P. Maloney ◽  
Peter A. Wood ◽  
Simon Parsons
Keyword(s):  
Hydrogen Bonding ◽  
Crystal Structures ◽  
Crystal Packing ◽  
Short Chain ◽  
Primary Amines ◽  
Dispersion Interactions ◽  
Chain Compounds ◽  
The Cross ◽  
Long Chain

In the short chain amines H-bonding dominates crystal packing, but dispersion wins-out for the long chain compounds. The cross-over point occurs between butyl and pentylamine, where interactions are finely balanced.

Ru and Ag promoted Co/Al2O3 catalysts for the gas-phase amination of aliphatic alcohols with ammonia

2018 ◽  
Vol 8 (22) ◽  
pp. 5858-5874 ◽  
Author(s):  
J. Ibáñez ◽  
B. T. Kusema ◽  
S. Paul ◽  
M. Pera-Titus
Keyword(s):  
Gas Phase ◽  
Noble Metal ◽  
Aliphatic Alcohols ◽  
Primary Amines ◽  
Cobalt Loading ◽  
Metal Doped ◽  
Long Chain

The present paper describes the synthesis of primary amines from long-chain aliphatic alcohols and ammonia using alumina-supported noble metal doped cobalt formulations with moderate cobalt loading (5 wt%).

scholarly journals Amine Analysis Using AlexaFluor 488 Succinimidyl Ester and Capillary Electrophoresis with Laser-Induced Fluorescence

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Christian G. Kendall ◽  
Amanda M. Stockton ◽  
Stephen Leicht ◽  
Heather McCaig ◽  
Shirley Chung ◽  
...  
Keyword(s):  
Capillary Electrophoresis ◽  
Fluorescent Probes ◽  
Limit Of Detection ◽  
Sodium Dodecylsulfate ◽  
Laser Induced Fluorescence ◽  
Primary Amines ◽  
Highly Sensitive ◽  
High Concentrations ◽  
Organic Amines ◽  
Long Chain

Fluorescent probes enable detection of otherwise nonfluorescent species via highly sensitive laser-induced fluorescence. Organic amines are predominantly nonfluorescent and are of analytical interest in agricultural and food science, biomedical applications, and biowarfare detection. Alexa Fluor 488 N-hydroxysuccinimidyl ester (AF488 NHS-ester) is an amine-specific fluorescent probe. Here, we demonstrate low limit of detection of long-chain (C9to C18) primary amines and optimize AF488 derivatization of long-chain primary amines. The reaction was found to be equally efficient in all solvents studied (dimethylsulfoxide, ethanol, and N,N-dimethylformamide). While an organic base (N,N-diisopropylethylamine) is required to achieve efficient reaction between AF488 NHS-ester and organic amines with longer hydrophobic chains, high concentrations (>5 mM) result in increased levels of ethylamine and propylamine in the blank. Optimal incubation times were found to be >12 hrs at room temperature. We present an initial capillary electrophoresis separation for analysis using a simple micellar electrokinetic chromatography (MEKC) buffer consisting of 12 mM sodium dodecylsulfate (SDS) and 5 mM carbonate, pH 10. Limits of detection using the optimized labeling conditions and these separation conditions were 5–17 nM. The method presented here represents a novel addition to the arsenal of fluorescent probes available for highly sensitive analysis of small organic molecules.

Sign in / Sign up

Export Citation Format

Share Document