Adsorption Properties of the Nickel-phosphate-basis Molecular Sieves

doi:10.3724/SP.J.1077.2007.00128

Abstract

Abstract: The adsorption of H₂ and H₂NCH₂CH₂NH₂ on the nickel-phosphate-basis
molecular sieves VSB-1 and CoVSB-1 was studied. The adsorption of H₂ is a supercritical physisorption. The adsorption quantity of H₂NCH₂CH₂NH₂ on VSB-1 and CoVSB-1 is larger than that of H₂O, C₂H₅ OH and other vapor of organicamines. VSB-1 and CoVSB-1 can adsorb 19.7wt％ and 24.3wt％ of H₂NCH₂CH₂NH₂respectively. The chemisorption mechanism of H₂NCH₂CH₂NH₂ on VSB-1 and CoVSB-1 was verified by using XRD, FT-IR and UV-Vis characterization. The large adsorption quantity of H₂NCH₂CH₂NH₂ is caused by the chelation between H₂NCH₂CH₂NH₂ and the active sites of Ni and Co
in the frameworks of VSB-1 and CoVSB-1.

Key words: VSB-1, CoVSB-1, molecular sieve, adsorption

CLC Number:

TB383

XIE Li-Li,HU Juan,WU Chun-Dong. Adsorption Properties of the Nickel-phosphate-basis Molecular Sieves[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00128.

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Adsorption Properties of the Nickel-phosphate-basis Molecular Sieves

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