Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application

K. C. Chan; Christopher Y. H. Chao; G. N. Sze-To; K. S. Hui

doi:10.1115/ES2011-54052

Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application

K. C. Chan
, Christopher Y. H. Chao
, G. N. Sze-To
, K. S. Hui

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Composite adsorbents synthesized from zeolite 13X and CaCl₂ were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt% CaCl₂ solution for 36 hours. The increase in the total pore volume is good for further impregnating the zeolite with CaCl₂. A large difference in equilibrium water uptake, 0.404g/g, between 25°C and 100°C under 870Pa was recorded for the 13X/CaCl₂ composite adsorbent impregnated in 40wt% CaCl₂ solution. This was 295% of that of zeolite 13X under the same condition. The 13X/CaCl₂ composite adsorbent showed a high potential in replacing vapor compression chillers in producing chilled water for central air-conditioning systems.

Original language	English
Title of host publication	ASME 2011 5th International Conference on Energy Sustainability
Publisher	American Society of Mechanical Engineers (ASME)
Pages	23-28
Number of pages	6
ISBN (Print)	9780791854686
DOIs	https://doi.org/10.1115/ES2011-54052
Publication status	Published - 2011
Event	ASME 2011 5th International Conference on Energy Sustainability, ES 2011 - Washington, DC, United States Duration: 7 Aug 2011 → 10 Aug 2011

Conference

Conference	ASME 2011 5th International Conference on Energy Sustainability, ES 2011
Country/Territory	United States
City	Washington, DC
Period	7/08/11 → 10/08/11

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10.1115/ES2011-54052

Cite this

@inproceedings{ad599fec0f8e4ac6ae8de3a7a0a60b63,

title = "Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application",

abstract = "Composite adsorbents synthesized from zeolite 13X and CaCl2 were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt\% CaCl2 solution for 36 hours. The increase in the total pore volume is good for further impregnating the zeolite with CaCl2. A large difference in equilibrium water uptake, 0.404g/g, between 25°C and 100°C under 870Pa was recorded for the 13X/CaCl2 composite adsorbent impregnated in 40wt\% CaCl2 solution. This was 295\% of that of zeolite 13X under the same condition. The 13X/CaCl2 composite adsorbent showed a high potential in replacing vapor compression chillers in producing chilled water for central air-conditioning systems.",

author = "Chan, \{K. C.\} and Chao, \{Christopher Y. H.\} and Sze-To, \{G. N.\} and Hui, \{K. S.\}",

year = "2011",

doi = "10.1115/ES2011-54052",

language = "English",

isbn = "9780791854686",

pages = "23--28",

booktitle = "ASME 2011 5th International Conference on Energy Sustainability",

publisher = "American Society of Mechanical Engineers (ASME)",

address = "United States",

note = "ASME 2011 5th International Conference on Energy Sustainability, ES 2011 ; Conference date: 07-08-2011 Through 10-08-2011",

}

Chan, KC, Chao, CYH, Sze-To, GN & Hui, KS 2011, Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application. in ASME 2011 5th International Conference on Energy Sustainability. American Society of Mechanical Engineers (ASME), pp. 23-28, ASME 2011 5th International Conference on Energy Sustainability, ES 2011, Washington, DC, United States, 7/08/11. https://doi.org/10.1115/ES2011-54052

Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application. / Chan, K. C.; Chao, Christopher Y. H.; Sze-To, G. N. et al.
ASME 2011 5th International Conference on Energy Sustainability. American Society of Mechanical Engineers (ASME), 2011. p. 23-28.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application

AU - Chan, K. C.

AU - Chao, Christopher Y. H.

AU - Sze-To, G. N.

AU - Hui, K. S.

PY - 2011

Y1 - 2011

N2 - Composite adsorbents synthesized from zeolite 13X and CaCl2 were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt% CaCl2 solution for 36 hours. The increase in the total pore volume is good for further impregnating the zeolite with CaCl2. A large difference in equilibrium water uptake, 0.404g/g, between 25°C and 100°C under 870Pa was recorded for the 13X/CaCl2 composite adsorbent impregnated in 40wt% CaCl2 solution. This was 295% of that of zeolite 13X under the same condition. The 13X/CaCl2 composite adsorbent showed a high potential in replacing vapor compression chillers in producing chilled water for central air-conditioning systems.

AB - Composite adsorbents synthesized from zeolite 13X and CaCl2 were investigated for applications in solar adsorption systems. The effect of Ca-ion-exchange on the adsorption properties of zeolite 13X was studied. Sodium ions in the zeolite structure were replaced by calcium ions by ion exchange. It was found that the Ca-ion-exchange process decreased the specific surface areas of the Ca-ion-exchanged zeolites while the total pore volumes were increased. The optimized Ca-ion-exchange condition existed when soaking zeolite 13X in 46wt% CaCl2 solution for 36 hours. The increase in the total pore volume is good for further impregnating the zeolite with CaCl2. A large difference in equilibrium water uptake, 0.404g/g, between 25°C and 100°C under 870Pa was recorded for the 13X/CaCl2 composite adsorbent impregnated in 40wt% CaCl2 solution. This was 295% of that of zeolite 13X under the same condition. The 13X/CaCl2 composite adsorbent showed a high potential in replacing vapor compression chillers in producing chilled water for central air-conditioning systems.

UR - https://www.scopus.com/pages/publications/84881129565

U2 - 10.1115/ES2011-54052

DO - 10.1115/ES2011-54052

M3 - Conference contribution

AN - SCOPUS:84881129565

SN - 9780791854686

SP - 23

EP - 28

BT - ASME 2011 5th International Conference on Energy Sustainability

PB - American Society of Mechanical Engineers (ASME)

T2 - ASME 2011 5th International Conference on Energy Sustainability, ES 2011

Y2 - 7 August 2011 through 10 August 2011

ER -

Development of New Zeolite 13X/CACL2 composite adsorbent for air-conditioning application

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