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The Government of Canada’s terminology and linguistic data bank.
molecular sieve [1 record]
Record 1 - internal organization data 2010-11-01
Record 1, English
Record 1, Subject field(s)
- Analytical Chemistry
- Chemistry
- Chemical Engineering
- Oil Refining
Record 1, Main entry term, English
- molecular sieve
1, record 1, English, molecular%20sieve
correct, see observation
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A microporous structure composed of either crystalline aluminosilicates, chemically similar to clays and feldspars and belonging to a class of materials known as zeolites, or crystalline aluminophosphates derived from mixtures containing an organic amine or quaternary ammonium salt [whose] pore sizes range from 5 to 10 Å [and whose characteristic is its] ability to undergo dehydration with little or no change in crystalline structure. 2, record 1, English, - molecular%20sieve
Record number: 1, Textual support number: 1 CONT
The dehydrated crystals are interlaced with regularly spaced channels of molecular dimensions, which comprise almost 50% of the total volume of the crystals. ... only those molecules that are small enough to pass through the pores of the crystals can enter the cavities and be adsorbed on the interior surface. This sieving or screening action, which makes it possible to separate smaller molecules from larger ones, is the most unusual characteristic of molecular sieves. 2, record 1, English, - molecular%20sieve
Record number: 1, Textual support number: 1 OBS
[The molecular sieves] are used in many fields of technology: to dry gases and liquids, for selective molecular separations based on size and polar properties, as ion-exchangers, as catalysts, as chemical carriers, in gas chromatography, and in the petroleum industry to remove normal paraffins from distillates. 2, record 1, English, - molecular%20sieve
Record number: 1, Textual support number: 2 OBS
molecular sieve: term often used in its plural form "molecular sieves". 3, record 1, English, - molecular%20sieve
Record 1, Key term(s)
- molecular sieves
Record 1, French
Record 1, Domaine(s)
- Chimie analytique
- Chimie
- Génie chimique
- Raffinage du pétrole
Record 1, Main entry term, French
- tamis moléculaire
1, record 1, French, tamis%20mol%C3%A9culaire
correct, see observation, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- crible moléculaire 2, record 1, French, crible%20mol%C3%A9culaire
correct, see observation, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Substance poreuse dont les pores se laissent pénétrer par certaines molécules et pas par d'autres, jouant ainsi le rôle d'un tamis au niveau microscopique. 3, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 1 CONT
Le gaz vecteur est séché sur tamis moléculaire [...] Les billes ou bâtonnets de tamis sont introduits dans un cylindre métallique d'environ 100 ml. L'activation ainsi que les régénérations ultérieures peuvent être effectuées dans le four du chromatographe sous balayage de gaz vecteur à 300 °C pendant une nuit. 4, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 2 CONT
Les adsorbants courants sont : l'argile activée et le gel de silice activé [...]; l'alumine activée; les tamis moléculaires (silico-aluminate de soude) [...] 5, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 1 OBS
Les zéolites sont d'excellents tamis moléculaires. 3, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 2 OBS
Une caractéristique importante des zéolithes est leur tendance à se déshydrater sans changement appréciable de leur structure cristalline. Les cristaux déshydratés présentent des cavités régulièrement distribuées et reliées par des canaux moléculaires. Ceux-ci offrent une surface très étendue pour l'adsorption de molécules étrangères. 6, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 3 OBS
tamis moléculaire; crible moléculaire : termes habituellement utilisés au pluriel. 7, record 1, French, - tamis%20mol%C3%A9culaire
Record number: 1, Textual support number: 1 PHR
Colonne de tamis moléculaires. 7, record 1, French, - tamis%20mol%C3%A9culaire
Record 1, Key term(s)
- tamis moléculaires
- cribles moléculaires
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Química analítica
- Química
- Ingenieria química
- Refinación del petróleo
Record 1, Main entry term, Spanish
- tamiz molecular
1, record 1, Spanish, tamiz%20molecular
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Grupo de desecantes adsorbentes aluminosilicatados cristalinos, pertenecientes al grupo mineral de las zeolitas, que sufren deshidratación sin cambio estructural. 2, record 1, Spanish, - tamiz%20molecular
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