Enhancing CO2 Adsorption and Separation Properties of Aluminophosphate Zeolites by Isomorphous Heteroatom Substitutions
Source abstract
Abstract
Mg, Co-substituted aluminophosphate zeolites with ERI framework topology (denoted as MgAPO-ERI and CoAPO-ERI) have been synthesized under hydrothermal conditions by using N,N,N′,N′-tetramethyl-1,6-hexanediamine as organic template. Their CO2 adsorption properties are investigated in comparison to those of the pure aluminophosphate counterpart AlPO-ERI. CoAPO-ERI shows the highest CO2 uptake of 57.3 cm3 g–1 (273 K and 1 bar) and the highest isosteric heat of 39.0 kJ mol–1 among the three samples. Importantly, the incorporation of Mg2+ and Co2+ ions in the framework of AlPO-ERI can greatly improve the adsorption selectivities of CO2 over CH4 and N2. Whereafter, transient breakthrough simulations were investigated and further proved the advantages of heteroatoms for separations. These results demonstrate that isomorphous heteroatom substitutions in aluminophosphate zeolites play a key role in enhancing CO2 adsorption and separation abilities.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Carbon Dioxide Capture Technologies · Membrane Separation and Gas Transport
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Chemical Engineering & Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
Van ‘t Hoff Institute for Molecular Sciences, University of Amsterdam, Science Park 904, Amsterdam 1098 XH, The Netherlands
Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University in Prague, Prague 2 128 43, Czech Republic
Funding
State Administration of Foreign Experts Affairs · Ministry of Science and Technology of the People's Republic of China · Ministry of Education of the People's Republic of China · Ministerstvo ?kolstv?, Ml?de?e a Telov?chovy · National Natural Science Foundation of China
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