The solubilities of gases in liquid mixtures: ethane in (benzene + 2,2,4-trimethylpentane), sulphur hexafluoride in (benzene + 2,2,4-trimethylpentane), and ethane in (benzene + cyclohexane) at 302.75 K

Armitage, David; Linford, R. G.; Thornhill, David G. T.

doi:10.1016/0021-9614(83)90112-x

“…For a rough estimate, we approach the ethane diffusivity in liquid benzene with the benzene diffusivity ( D ≈ 2 × 10 −9 m 2 s −1 [ 87 ]). In Reference [ 88 ], the ethane solubility in liquid benzene (in mole fractions, related to the ethane gas phase at a pressure of 1 atm) has been determined as ≈ 0.014. With an ethane guest concentration of 2 mmol/g in SAPO-34 at 1 atm [ 50 ], this leads to p f ≈ 10 −4 .…”

Section: Resultsmentioning

confidence: 99%

Diffusion Study by IR Micro-Imaging of Molecular Uptake and Release on Mesoporous Zeolites of Structure Type CHA and LTA

Bonilla

¹

,

Titze

²

,

Schmidt

³

et al. 2013

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The presence of mesopores in the interior of microporous particles may significantly improve their transport properties. Complementing previous macroscopic transient sorption experiments and pulsed field gradient NMR self-diffusion studies with such materials, the present study is dedicated to an in-depth study of molecular uptake and release on the individual particles of mesoporous zeolitic specimens, notably with samples of the narrow-pore structure types, CHA and LTA. The investigations are focused on determining the time constants and functional dependences of uptake and release. They include a systematic variation of the architecture of the mesopores and of the guest molecules under study as well as a comparison of transient uptake with blocked and un-blocked mesopores. In addition to accelerating intracrystalline mass transfer, transport enhancement by mesopores is found to be, possibly, also caused by a reduction of transport resistances on the particle surfaces.

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Copper‐Catalyzed Dehydrogenative Amidation of Light Alkanes

Fuentes

¹

,

Gava

²

,

Saper

³

et al. 2021

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The functionalization of C−H bonds in light alkanes, particularly to form C−N bonds, remains a challenge. We report the dehydrogenative coupling of amides with C1–C4 hydrocarbons to form N‐alkyl amide products with tBuOOtBu as oxidant, and a copper complex of a phenanthroline‐type ligand as catalyst. The reactions occurred in good yields in benzene or supercritical carbon dioxide as solvents. This strategy allowed for the determination of the relative reactivity of these alkane C−H bonds toward this amination process and showed, in contrast to prior work with larger alkanes, that the reactivity correlated with bond dissociation energies.

show abstract

Copper‐Catalyzed Dehydrogenative Amidation of Light Alkanes

Fuentes

¹

,

Gava

²

,

Saper

³

et al. 2021

View full text Add to dashboard Cite

The functionalization of C−H bonds in light alkanes, particularly to form C−N bonds, remains a challenge. We report the dehydrogenative coupling of amides with C1–C4 hydrocarbons to form N‐alkyl amide products with tBuOOtBu as oxidant, and a copper complex of a phenanthroline‐type ligand as catalyst. The reactions occurred in good yields in benzene or supercritical carbon dioxide as solvents. This strategy allowed for the determination of the relative reactivity of these alkane C−H bonds toward this amination process and showed, in contrast to prior work with larger alkanes, that the reactivity correlated with bond dissociation energies.

show abstract

The solubilities of gases in liquid mixtures: ethane in (benzene + 2,2,4-trimethylpentane), sulphur hexafluoride in (benzene + 2,2,4-trimethylpentane), and ethane in (benzene + cyclohexane) at 302.75 K

Cited by 5 publications

References 23 publications

Diffusion Study by IR Micro-Imaging of Molecular Uptake and Release on Mesoporous Zeolites of Structure Type CHA and LTA

Diffusion Study by IR Micro-Imaging of Molecular Uptake and Release on Mesoporous Zeolites of Structure Type CHA and LTA

Copper‐Catalyzed Dehydrogenative Amidation of Light Alkanes

Copper‐Catalyzed Dehydrogenative Amidation of Light Alkanes

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