Results 51 to 60 of about 7,916 (223)

CO chemisorption on Ir(111) [PDF]

open access: yes, 1976
The adsorption of carbon monoxide on the (111) crystallographic orientation of iridium both at and below room temperature has been investigated using both low‐energy electron diffraction (LEED) and thermal desorption mass spectrometry.
Comrie, C. M., Weinberg, W. H.
core  

Modeling adsorption equilibria of xylene isomers in a microporous metal–organic framework [PDF]

open access: yes, 2012
Single and multicomponent adsorption equilibria of xylene isomers: o-xylene (o-x), m-xylene (m-x), pxylene (p-x) and ethylbenzene (eb) was investigated on the three dimensional microporous metal–organic framework Zn(BDC)(Dabco)0.5 (BDC = 1,4 ...
Bárcia, Patrick da Silva   +5 more
core   +1 more source

Analyse Thermodynamique des Isothermes de Sorptions des Figues

open access: yesRevue des Énergies Renouvelables, 2021
In this study, the hygroscopicity and thermodynamic properties of figs were studied to simulate their hygroscopic behavior during storage and drying. The experimental results were analyzed by the nine models of sorption isotherms.
Abdelouahab Benseddik   +4 more
doaj  

Desorption isotherms and isosteric heat of araticum (Annona crassiflora Mart.) seeds [PDF]

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2020
The objective of this study was to determine the desorption isotherms and isosteric heat of Annona crassiflora Mart. seeds, using Akaike information criterion (AIC) and Schwarz’s Bayesian information criterion (BIC) to assist in the choice of the ...
Weder N. Ferreira Junior   +5 more
doaj   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve   +4 more
wiley   +1 more source

Dilation kinetics of glassy, aromatic polyimides induced by carbon dioxide sorption [PDF]

open access: yes, 1995
Over the past years, the equilibrium sorption of gases in polymers has been intensively studied. Mostly, glassy polymers were investigated because of their excellent selective mass transport properties.
Huisman, I.   +4 more
core   +2 more sources

Synthesis of a Carbon‐Linked Acyldepsipeptide Derivative

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
The synthesis of a methylene‐linked acyldepsipeptide (ADEP) is reported. Success relied upon an improve method to generate a versatile vinyl glycine methyl ester synthon and a rationally optimized Grubb’s metathesis. NMR and in silico studies revealed an unusual trans–trans proline orientation for this new unnatural ADEP analog, advancing the ...
Katelyn G. Stevens-Davis   +6 more
wiley   +1 more source

Diamine Grafting of Pyrazole‐Based MOF‐303 for Diluted‐Source CO2 Capture

open access: yesSmall, EarlyView.
Vapor‐phase diffusion of ethylenediamine (EDA) into the pyrazole‐based MOF‐303 framework enables efficient amine grafting via pyrazole deprotonation and ion‐pair–stabilized hydrogen bonding with the pore walls. Spectroscopic analyses elucidate the interaction, while breakthrough experiments confirm the material's performance and cyclability.
Giuseppe Mastronardi   +9 more
wiley   +1 more source

Adsorption of selected GHG on metal-organic frameworks in the context of accompanying thermal effects [PDF]

open access: yesArchives of Environmental Protection
Thermal effects accompanying gas sorption on micro- and mesoporous materials provide unique insights into the type, course, and efficiency of sorption. In this study, metal-organic frameworks (MOFs) with different topologies and chemical structures were ...
Aleksandra Gajda   +6 more
doaj   +1 more source

Solution-Phase Synthesis of Heteroatom-Substituted Carbon Scaffolds for Hydrogen Storage [PDF]

open access: yes, 2010
This paper reports a bottom-up solution-phase process for the preparation of pristine and heteroatom (boron, phosphorus, or nitrogen)-substituted carbon scaffolds that show good surface areas and enhanced hydrogen adsorption capacities and binding ...
Ahn, Channing C.   +9 more
core   +2 more sources

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