Sorption of vapour mixtures of methanol and dimethyl carbonate in PTMSP: Cooperative and competitive sorption in one system

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F16%3A43899610" target="_blank" >RIV/60461373:22340/16:43899610 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.12.015" target="_blank" >http://dx.doi.org/10.1016/j.eurpolymj.2015.12.015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.eurpolymj.2015.12.015" target="_blank" >10.1016/j.eurpolymj.2015.12.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Sorption of vapour mixtures of methanol and dimethyl carbonate in PTMSP: Cooperative and competitive sorption in one system

Popis výsledku v původním jazyce

Equilibrium sorption of vapour mixtures of methanol and dimethyl carbonate in poly[(trimethylsilyl)propyne], PTMSP, is reported. The experiments were conducted at 40 oC and at atmospheric pressure using an apparatus that combined the sorption gravimetry in a carrier gas and the analysis of the desorbate by Fourier transform infrared spectroscopy (FT-IR). An unusual combination of competitive and cooperative sorption effects of dimethyl carbonate on methanol was observed. The cooperative sorption occurred at small methanol vapour activities, at which the sorption of pure methanol vapour is anomalously, and advantageously, small. The sorption isotherms of pure vapours and vapour mixtures were plausibly parameterized using Guggenheim, Anderson, De Boer (GAB) model and its semi-empirical extension for vapour mixtures, respectively. While the ideal separation factor of sorption, observable from the pure component sorption data, ranged 2-248, the real separation factor was significantly lowered by the co-sorption effects to 1-20. Overall, the highest real separation factors were observed for the higher dilutions of the binary feed mixtures with the inert gas and, advantageously, for methanol rich feed mixtures (i.e. in the vicinity of the composition of the azeotropic mixture).

Název v anglickém jazyce

Sorption of vapour mixtures of methanol and dimethyl carbonate in PTMSP: Cooperative and competitive sorption in one system

Popis výsledku anglicky

Equilibrium sorption of vapour mixtures of methanol and dimethyl carbonate in poly[(trimethylsilyl)propyne], PTMSP, is reported. The experiments were conducted at 40 oC and at atmospheric pressure using an apparatus that combined the sorption gravimetry in a carrier gas and the analysis of the desorbate by Fourier transform infrared spectroscopy (FT-IR). An unusual combination of competitive and cooperative sorption effects of dimethyl carbonate on methanol was observed. The cooperative sorption occurred at small methanol vapour activities, at which the sorption of pure methanol vapour is anomalously, and advantageously, small. The sorption isotherms of pure vapours and vapour mixtures were plausibly parameterized using Guggenheim, Anderson, De Boer (GAB) model and its semi-empirical extension for vapour mixtures, respectively. While the ideal separation factor of sorption, observable from the pure component sorption data, ranged 2-248, the real separation factor was significantly lowered by the co-sorption effects to 1-20. Overall, the highest real separation factors were observed for the higher dilutions of the binary feed mixtures with the inert gas and, advantageously, for methanol rich feed mixtures (i.e. in the vicinity of the composition of the azeotropic mixture).

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

—

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

European Polymer Journal

ISSN

0014-3057

e-ISSN

—

Svazek periodika

75

Číslo periodika v rámci svazku

75

Stát vydavatele periodika

IE - Irsko

Počet stran výsledku

8

Strana od-do

243-250

Kód UT WoS článku

000370309400020

EID výsledku v databázi Scopus

2-s2.0-84952766482