Low-coverage adsorption properties of the metal-organic framework amino-MIL-53 (Al) were determined using the pulse chromatographic technique. By using n-alkanes, iso-alkanes, 1-alkenes, cyclohexane and benzene as probe molecules, the nature of the adsorptive interactions in amino-MIL-53 (Al) was studied. Henry adsorption constants and adsorption enthalpies of iso-alkanes are significantly lowe...

This study discusses the abilities of the family of molecular descriptors on the structure-property relationships (MDFSPR) approach in modelling of the alkanes boiling points based on chemical structure information. All alkanes from C3 to C9 were included in the analysis. A MDFSPR model with two descriptors, were constructed. The MDF SPR model was validated, and its correlation coefficient was ...

The separation of alkanes is important for a range of applications such as oil refinement, filtration and gas separation. Carbon nanotubes, with their large surface area are highly promising for applications utilising alkane adsorption and separation. Rather than remaining isolated however, nanotubes tend to bundle together, and the adsorption properties of such bundles and subsequent potential...

The cause of the failure of the C2H2-C2H4 assay for nitrogen-fixing bacteria growing on lower alkanes was studied. Acetylene was a strong competitive inhibitor of methane oxidation for methane-utilizing bacteria, as well as for the oxidation of lower alkanes by other bacteria, so that energy and reducing power were no longer available for the reduction of acetylene by nitrogenase. Nitrogen-fixi...

Synchrotron x-ray reflectivity is used to study the interface between bulk water and bulk n-alkanes with carbon numbers 6 through 10, 12, 16, and 22. For all interfaces, except the water-hexane interface, the interfacial width disagrees with the prediction from capillary-wave theory. The variation of interfacial width with carbon number can be described by combining the capillary-wave predictio...

A new strain of Prototheca zopfii Krüger was grown on acetate or on pure n-alkanes. A maximum acetate-supported exponential growth of 12 divisions day occurred at pH 5 and 30 degrees C. At 25 degrees C, growth on n-alkanes was almost as fast, but no growth occurred at 30 degrees C. After 4 days at 25 degrees C, 34 to 45% of the n-alkanes had been removed, whereas at 21 degrees C and slower grow...

RhC1(CO)(PMe3)2 under irradiation is a powerful catalyst which can functionalize hydrocarbons including alkanes under mild conditions. The reaction with carbon monoxide leads to the formation of the corresponding aldehyde. Alkanes react regioselectively at the terminal methyl group. The reaction of alkanes under inert atmosphere results in the formation of alkenes with a concomitant evolution o...

The growth of secondary organic aerosols (SOA) is a vital cause the outbreaks winter haze in North China. Intermediate volatile compounds (IVOCs) are important precursors SOA. Therefore, chemical characteristics, source, and SOA production IVOCs during episodes have attracted much attention. Hourly time resolution IVOC samples two collected Hebei Province China were analyzed this study. Results...

The cuticular hydrocarbons of diapausing pupae of the tobacco hornworm, Manduca sexta (L.), are composed of two types of hydrocarbons: n-alkanes (3%) and unsaturated hydrocarbons (97%). The integument, fat body, muscle, and hemolymph are composed of three types of hydrocarbons: n-alkanes (9, 6, 9, and 2%, respectively), branched alkanes (75, 85, 80, and 56%, respectively), and unsaturated hydro...

The carbon source markedly influenced the qualitative and quantitative composition of cellular hydrocarbons in Cladosporium resinae. Total lipid and hydrocarbon content was greater in cells grown on n-alkanes than in cells grown on glucose or glutamic acid. Glucose-grown cells contained a spectrum of aliphatic hydrocarbons from C(7) to C(36); pristane and n-hexadecane comprised 98% of the total...