Premium
Syntheses, Crystal Structures and Gas Sorption Properties of Prussian Blue Analogues Constructed from [Cr(CN) 6 ] 3– Building Blocks
Author(s) -
Yuan AiHua,
Chu ChaoXia,
Zhou Hu,
Yuan Peng,
Liu KangKang,
Li Li,
Zhang QingFeng,
Chen Xin,
Li YiZhi
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200900902
Subject(s) - prussian blue , sorption , chemistry , isostructural , alkali metal , gravimetric analysis , porosity , bet theory , metal , inorganic chemistry , dehydration , thermogravimetric analysis , crystallography , nuclear chemistry , crystal structure , adsorption , organic chemistry , biochemistry , electrode , electrochemistry
Three isostructural porous Prussian blue analogues KM[Cr(CN) 6 ] · H 2 O (M = Zn, Mn, Fe) with alkali metal cations K + located within the pores of the frameworks have been constructed and characterized structurally. Thermal gravimetric analysis and variable‐temperature powder XRD results indicate that the three porous materials are stable at high temperatures, and their frameworks are still retained after dehydration. The permanent porosities have been confirmed by nitrogen and hydrogen sorption measurements at 77 K. Sorption studies show that the framework of FeCr with just 289 m 2 g –1 BET surface area can take up a moderate amount of H 2 at 77 K and 860 Torr [112 cm 3 (STP) g –1 , 0.71 wt.‐%], which indicates that the guest alkali metal cation K + located in the pores can enhance the H 2 binding affinity within the dehydrated porous framework.