Densities of concentrated alkaline aluminate solutions at temperatures (323 to 573) K and 10 MPa pressure.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F10%3A00023447" target="_blank" >RIV/60461373:22340/10:00023447 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Densities of concentrated alkaline aluminate solutions at temperatures (323 to 573) K and 10 MPa pressure.

Popis výsledku v původním jazyce

Densities of highly alkaline sodium aluminate solutions have been measured by vibrating-tube densimetry over the temperature range 323 to 573 K at a pressure of 10 MPa. Ionic strengths, I, of these mixed solutions were from 1 to 6, and the degree of substitution of hydroxide by aluminate, R, ranged from 0.1 to 0.4, where R = mA/m and mA and m () I) are the aluminate and total molalities, respectively. Apparent molar volumes, V?, derived from the density data for the (NaOH + NaAl(OH)4)(aq) solutions, were found to follow Young?s rule; that is, they depended linearly on the level of substitution of aluminate for hydroxide at all temperatures. The slopes of the Young?s rule plots were independent of ionic strength at a given temperature but depended linearly on temperature. It is therefore possible to model V? (and hence the densities) of ternary (NaOH + NaAl(OH)4)(aq) mixtures using only two parameters in addition to those needed for the correlation of the binary NaOH(aq) solutions. This

Název v anglickém jazyce

Densities of concentrated alkaline aluminate solutions at temperatures (323 to 573) K and 10 MPa pressure.

Popis výsledku anglicky

Densities of highly alkaline sodium aluminate solutions have been measured by vibrating-tube densimetry over the temperature range 323 to 573 K at a pressure of 10 MPa. Ionic strengths, I, of these mixed solutions were from 1 to 6, and the degree of substitution of hydroxide by aluminate, R, ranged from 0.1 to 0.4, where R = mA/m and mA and m () I) are the aluminate and total molalities, respectively. Apparent molar volumes, V?, derived from the density data for the (NaOH + NaAl(OH)4)(aq) solutions, were found to follow Young?s rule; that is, they depended linearly on the level of substitution of aluminate for hydroxide at all temperatures. The slopes of the Young?s rule plots were independent of ionic strength at a given temperature but depended linearly on temperature. It is therefore possible to model V? (and hence the densities) of ternary (NaOH + NaAl(OH)4)(aq) mixtures using only two parameters in addition to those needed for the correlation of the binary NaOH(aq) solutions. This

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

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

Název periodika

Journal of Chemical Engineering Data

ISSN

0021-9568

e-ISSN

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Svazek periodika

55

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

000275328000017

EID výsledku v databázi Scopus

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