Search results for "Methylamine"
showing 10 items of 97 documents
Abatement of 3-methylbutanal and trimethylamine with combined plasma and photocatalysis in a continuous planar reactor
2014
International audience; This paper deals with the 3-methylbutanal ((CH3)2CHCH2COH) removal with the help of a nonthermal surface plasma discharge coupled with photocatalysis. The capability of this process for gas treatment was studied. A planar reactor system was developed in order to perform the effect of adding photocatalytic material in plasma surface discharge barrier dielectric (SDBD) zone on (i) 3-methylbutanal removal, (ii) selectivity of CO2 and CO, (iii) byproducts formation such ozone formation. It was found that the influence of the UV light generated by SDBD reactor was very low. The activation of the photocatalyst media could be negligible. Whereas, the introduction of externa…
Determination of trimethylamine-N-oxide in combination withl-carnitine andγ-butyrobetaine in human plasma by UPLC/MS/MS
2015
An ultra-high-performance liquid chromatography-mass spectrometry (UPLC/MS/MS) method was developed and validated for the quantification of trimethylamine-N-oxide (TMAO) simultaneously with TMAO-related molecules L-carnitine and γ-butyrobetaine (GBB) in human blood plasma. The separation of analytes was achieved using a Hydrophilic interaction liquid chromatography (HILIC)-type column with ammonium acetate-acetonitrile as the mobile phase. TMAO determination was validated according to valid US Food and Drug Administration guidelines. The developed method was successfully applied to plasma samples from healthy volunteers.
Fluorinated Heterocyclic Compounds. A Photochemical Approach to a Synthesis of Polyfluoroaryl-1,2,4-triazoles.
2005
The reaction of some fluorinated 1,2,4-oxadiazoles in the presence of methylamine or propylamine has been investigated. The irradiation in methanol or acetonitrile leads with acceptable yields to the corresponding fluorinated 1- methyl- or 1-propyl-1,2,4-triazole.
Structural incorporation of nitrogen into zeolites, and alpos: ab initio molecular orbital calculations on stability and basicity
1998
Ab initio molecular orbital calculations (HF/6-31G*) are used to obtain thermodynamical information on the possibility to form NH-bridging or NH2-terminal groups in amorphous and crystalline materials containing Si–O–Si and Al–O–P structures, such as for instance, zeolites and aluminophosphates. We have employed dimeric model clusters Si–O–Si and Al–O–P which contain NH2-terminal groups or an oxygen atom substituted by a NH bridging unit. The Bronsted basicity and the softness–hardness of these structures have been determined using the proton affinity and the HOMO energy, respectively. The obtained results indicate that for both Si–O–Si and Al–O–P linkages and from a thermodynamic standpoin…
Role of the functional group in n-octydimethylsilanes in the synthesis of C8 reversed-phase silica packings for high-performance liquid chromatography
1986
Abstract C8 reversed-phase packings have been sysnthesised by reaction of a 25-nm pore-size high-performance liquid chromatographic silica (10 μm, as(BET) = 297 m2 g-1) with 2,4-lutidine as base and dichloromethane and N,N-dimethylflormamide as solvents, or without solvents and with the following silanes: n-octyldimenthylchlorosilane (C8-Cl), n-octyldimethylhydroxysilane (C8-OH), n-octyldimethylmethoxysilane (C8-OCH3), n-octyldimethylethoxysilane (C8-OC2H5), n-octyldimethyl(dimethylamino) silane [C8-N(CH3)2], n-octyldimethyl(trifluoroacetoxy)silane (C8- OCOCF3), and bis-(n-octyldimethylsiloxane) (C8-O-C8). C8-Cl, C8-OH and C8-OCH3 each form a reactive intermediate with 2,4-lutidine, favouri…
CCDC 247703: Experimental Crystal Structure Determination
2005
Related Article: A.Lehtonen, R.Sillanpaa|2005|Polyhedron|24|257|doi:10.1016/j.poly.2004.11.003
CCDC 679818: Experimental Crystal Structure Determination
2008
Related Article: C.Bonnot, J.-C.Chambron, E.Espinosa, R.Graff|2008|J.Org.Chem.|73|868|doi:10.1021/jo701984z
CCDC 140896: Experimental Crystal Structure Determination
2000
Related Article: A.M.Costero, E.Monrabal, C.Andreu, R.Martinez-Manez, J.Soto, M.Padilla-Tosta, T.Pardo, L.E.Ochando, J.M.Amigo|2000|J.Chem.Soc.,Dalton Trans.||361|doi:10.1039/a906342k
CCDC 907671: Experimental Crystal Structure Determination
2013
Related Article: Jochen Körber, Stefan Löffler, Dieter Schollmeyer, Udo Nubbemeyer|2013|Synthesis|45|2875|doi:10.1055/s-0033-1338519
CCDC 1828115: Experimental Crystal Structure Determination
2018
Related Article: Víctor García-López, João C. Waerenborgh, Bruno J. C. Vieira, Miguel Clemente-León, Eugenio Coronado|2018|Dalton Trans.|47|9156|doi:10.1039/C8DT01425F