scholarly journals Cryo Infrared Spectroscopy of N2 Adsorption onto Bimetallic Rhodium-Iron Clusters in Isolation

2021 ◽  
Author(s):  
Matthias P. Klein ◽  
Amelie A. Ehrhard ◽  
Maximilian E. Huber ◽  
Annika Straßner ◽  
Daniela V. Fries ◽  
...  
Keyword(s):  
Infrared Spectroscopy ◽  
N2 Adsorption ◽  
Iron Clusters

scholarly journals Infrared spectroscopy of N2 adsorption on size selected cobalt cluster cations in isolation

2015 ◽  
Vol 17 (16) ◽  
pp. 10358-10362 ◽  
Author(s):  
Sebastian Dillinger ◽  
Jennifer Mohrbach ◽  
Joachim Hewer ◽  
Maximilian Gaffga ◽  
Gereon Niedner-Schatteburg
Keyword(s):  
Infrared Spectroscopy ◽  
Size Effects ◽  
Cluster Size ◽  
N2 Adsorption ◽  
Cobalt Cluster

IR active N2 stretching frequencies in isolated cobalt cluster nitrogen adsorbate complexes, [Con(N2)1]+, tell about subtle cluster size effects much beyond chemical intuition.

scholarly journals Non-Linear Enthalpy-Entropy Correlation for Nitrogen Adsorption in Zeolites

Molecules ◽  
2018 ◽  
Vol 23 (11) ◽  
pp. 2978 ◽  
Author(s):  
Montserrat Delgado ◽  
Carlos Arean
Keyword(s):  
Infrared Spectroscopy ◽  
Linear Correlation ◽  
Variable Temperature ◽  
Nitrogen Adsorption ◽  
Porous Solids ◽  
Separation And Purification ◽  
N2 Adsorption ◽  
Adsorption Enthalpy ◽  
Non Linear

The thermodynamics of dinitrogen adsorption in faujasite-type zeolites, Na-Y, Ca-Y and Sr-Y, were investigated by means of variable-temperature infrared spectroscopy, a technique that affords determination of the standard adsorption enthalpy (ΔH0) and entropy (ΔS0) from an analysis of the IR spectra recorded over a range of temperatures. The results obtained, taken together with previously reported values for N2 adsorption on protonic zeolites, revealed a non-linear correlation between ΔH0 and ΔS0. Implications of such a correlation for gas separation and purification by adsorption in porous solids are highlighted.

scholarly journals Cryo Kinetics of N2 Adsorption onto Bimetallic Rhodium-Iron Clusters in Isolation

2021 ◽  
Author(s):  
Amelie A. Ehrhard ◽  
Matthias P. Klein ◽  
Jennifer Mohrbach ◽  
Sebastian Dillinger ◽  
Gereon Niedner-Schatteburg
Keyword(s):  
N2 Adsorption ◽  
Iron Clusters ◽  
Kinetics Of

Synthesis and Characterisation of Hierarchically Porous HZSM-5 as Catalysts for the Synthesis of 2,3,5-Trimethyl-1,4-benzoquinone

2017 ◽  
Vol 70 (6) ◽  
pp. 691 ◽  
Author(s):  
Yu Shen ◽  
Fumin Wang ◽  
Chaoqun Yang ◽  
Xubin Zhang
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Fourier Transform Infrared Spectroscopy ◽  
Hierarchical Structure ◽  
N2 Adsorption ◽  
Transmission Electron ◽  
The Hierarchical Structure ◽  
Adsorption Desorption

Hierarchical HZSM-5 were synthesised by controlled desilication in alkaline medium and characterised by field-emission scanning electron microscopy, X-ray diffraction, transmission electron microscopy, inductively coupled plasma–atomic emission spectrometry, N2 adsorption–desorption, and Fourier transform infrared spectroscopy. The catalytic performance of HZSM-5 towards the selective oxidation of 2,3,6-trimethylphenol by H2O2 was evaluated. Recyclability tests were also carried out. The results showed that 2,3,5-trimethyl-1,4-benzoquinone was produced in high yields (i.e. 90 %), corresponding to a 2,3,6-trimethylphenol percentage of 98 %. The N2 adsorption–desorption and XRD studies suggested that mesopores with an average size of 5 nm were produced and that the structural character of HZSM-5 was preserved after desilication. Transmission electron microscopy analysis of the spent catalyst indicated good stability of the hierarchical structure. The Fourier transform infrared spectroscopy studies revealed the development of acid sites. The combined results suggested that the nature of the solvent, intrinsic acidity, and shape selectivity of the hierarchical structure of the catalyst ensured high catalytic properties.

Millimetre-wave and infrared spectroscopy of Br13 CN: anharmonic force field of cyanogen bromide from spectroscopic data and ab initio calculations

1997 ◽  
Vol 90 (3) ◽  
pp. 495-497
Author(s):  
CLAUDIO ESPOSTI ◽  
FILIPPO TAMASSIA ◽  
CRISTINA PUZZARINI ◽  
RICCARDO TARRONI ◽  
ZDENEK ZELINGER
Keyword(s):  
Infrared Spectroscopy ◽  
Force Field ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Spectroscopic Data ◽  
Cyanogen Bromide ◽  
Millimetre Wave ◽  
Anharmonic Force

A long-term chemical and infrared spectroscopy study on a soil amended with municipal sewage sludge

Agronomie ◽  
2001 ◽  
Vol 21 (2) ◽  
pp. 169-178 ◽  
Author(s):  
Giovanni Gigliotti ◽  
Pier Lodovico Giusquiani ◽  
Daniela Businelli
Keyword(s):  
Infrared Spectroscopy ◽  
Sewage Sludge ◽  
Municipal Sewage ◽  
Municipal Sewage Sludge ◽  
Spectroscopy Study
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