Equilibrium capacity of He, N2 and CO2 on Ga-rich PST-1 zeolite at 303 K and pressures up to 5000 kPa

Niya, Arash Arami, Rufford, Thomas, Birkett, Greg and Zhu, Zhonghua (2016). Equilibrium capacity of He, N2 and CO2 on Ga-rich PST-1 zeolite at 303 K and pressures up to 5000 kPa. In: 12th International Conference on the Fundamentals of Adsorption (FOA12), Friedrichshafen, Germany, (). 29 May-3 June 2016.

Author Niya, Arash Arami
Rufford, Thomas
Birkett, Greg
Zhu, Zhonghua
Title of paper Equilibrium capacity of He, N2 and CO2 on Ga-rich PST-1 zeolite at 303 K and pressures up to 5000 kPa
Conference name 12th International Conference on the Fundamentals of Adsorption (FOA12)
Conference location Friedrichshafen, Germany
Conference dates 29 May-3 June 2016
Publication Year 2016
Sub-type Poster
Language eng
Abstract/Summary We report helium, nitrogen and carbon dioxide equilibrium adsorption capacities on a Gallium-rich synthetic small-pore zeolite PST-1 (POSTECH number 1), which was prepared according to the method of Shin, Camblor et al. (2010). This zeolite is composed of potassium gallosilicate and has the topology of natrolite (NAT). Equilibrium adsorption capacities were measured by a gravimetric method (Belsorp BG with a RubothermTM magnetic suspension balance) at pressures of (10 - 5000) kPa and temperatures from (303 - 343) K. The helium adsorption measurement technique reported here was based on features of previous works by Gumma and Talu (2003) and Sircar (2001), and this method includes a step to determine the true volume of the adsorbent sample assuming non-zero helium uptake. The synthesized PST-1 has At 303 °K and 5000 kPa, for example, the helium uptake on PST-1 was 0.037 ± 0.003 mmol.g-1, which confirms that helium adsorption on this small pore zeolite should not be assumed to be negligible. Our results show that PST-1 pores are sufficiently narrow to exhibit equilibrium selectivity for helium over N2, with the maximum measured N2 equilibrium capacity only 0.011 ± 0.0005 mmol.g-1at 303 K and 5000 kPa. The adsorption capacity of PST-1 for CO2 was 0.077 ± 0.0003 mmol.g-1 at this condition.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Conference Paper
Collection: School of Chemical Engineering Publications
 
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Created: Thu, 26 May 2016, 10:27:11 EST by Dr Thomas Rufford on behalf of School of Chemical Engineering