Enhancement of Water Adsorption–desorption Performance of Aluminophosphate Molecular Sieves (AlPO-5) Substituted with Several Metals

Katoh, Masahiro; Satoh, Akiho; Kimura, Michisato; Sugiyama, Shigeru

doi:10.1252/jcej.18we069

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…Water adsorption was measured using a volumetric adsorption apparatus assembled in our laboratory [4] [5] [7]. The adsorbent was initially outgassed in a sample room at 350˚C and 4.0 × 10 −4 Torr for 2 h. Water was introduced to the sample room at a saturated water pressure and at room temperature.…”

Section: Measurement Of the Water Adsorption And Desorption Behavior mentioning

confidence: 99%

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties

Katoh¹,

Horiuchi²,

Satoh³

et al. 2019

JEAS

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Commercial silicoaluminophosphate molecular sieves (SAPO-34) received alkali treatment with either NaOH (0.2, 0.01, 0.005, or 0.001 M) or NH 4 OH (0.005 M). Treatment with NaOH (0.005 M) increased the water adsorption initial rate of SAPO-34 by 1.4-fold. The alkali treatment introduced Na + adsorption sites into the SAPO-34. The desorption ratio (adsorption at 30˚C and desorption at 100˚C) was 88.2% higher than the original rate (84.3%). On the other hand, after alkali treatment of SAPO-34 using NH 4 OH (0.005 M), calcination resulted in the highest desorption ratio at 91.3%. When combined with calcination, alkali treatment with NH 4 OH introduced H + adsorption sites into SAPO-34, H + adsorption sites feature low levels of interaction with water, which enhanced the desorption ratio, but decreased the initial adsorption rate. These results indicate that treating commercial SAPO-34 with 0.005 M NaOH enhances both the adsorption and desorption behaviors.

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Section: Measurement Of the Water Adsorption And Desorption Behavior mentioning

confidence: 99%

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties

Katoh¹,

Horiuchi²,

Satoh³

et al. 2019

JEAS

Self Cite

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show abstract

Research progress of sorption materials in rotary desiccant wheel system{fr}Progrès de la recherche sur les matériaux de sorption dans le système de roue de dessiccation rotative

Tang,

Wang,

Liang

et al. 2025

International Journal of Refrigeration

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Aluminophosphate - Based adsorbents for atmospheric water generation

Elwadood¹,

Dumée²,

Wahedi³

et al. 2022

Journal of Water Process Engineering

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Enhancement of Water Adsorption–desorption Performance of Aluminophosphate Molecular Sieves (AlPO-5) Substituted with Several Metals

Cited by 3 publications

References 16 publications

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties

Research progress of sorption materials in rotary desiccant wheel system{fr}Progrès de la recherche sur les matériaux de sorption dans le système de roue de dessiccation rotative

Aluminophosphate - Based adsorbents for atmospheric water generation

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Enhancement of Water Adsorption–desorption Performance of Aluminophosphate Molecular Sieves (AlPO-5) Substituted with Several Metals

Cited by 3 publications

References 16 publications

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO&lt;sub&gt;-&lt;/sub&gt;34) Enhances the Water Adsorption and Desorption Properties

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO&lt;sub&gt;-&lt;/sub&gt;34) Enhances the Water Adsorption and Desorption Properties

Research progress of sorption materials in rotary desiccant wheel system{fr}Progrès de la recherche sur les matériaux de sorption dans le système de roue de dessiccation rotative

Aluminophosphate - Based adsorbents for atmospheric water generation

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Product

Resources

About

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties

Alkali Treatment of Commercial Silicoaluminophosphate Molecular Sieves (SAPO<sub>-</sub>34) Enhances the Water Adsorption and Desorption Properties