A novel open framework zincophosphate: Synthesis and characterization
Abstract
The crystallization of a reactive zincophosphate gel (which may contain Co(ll) component) in the presence of sodium cations at ambient temperature and pressure yielded products (abbreviated ZnPO-HEX or CoZnPO-HEX) with a novel anionic open framework topology. The Co(ll) ions isomorphously replace zinc(ll) in this zincophosphate lattice up to 30%. The hopeite phase appears as a precursor in the crystallization of these new products. The single crystal structure determination of CoZnPO-HEX reveals that the structure belongs to the hexagonal P61 space group with unit cell parameters a = 10.447(3) and c = 15.049(5) A. The structure consists of a three-dimensional tetrahedral framework containing one-dimensional six-ring channels. An in finite helix built up of sodium cations and water molecules has been found inside the channel.
The helix plays an important structural role because a complete dehydration of the materials is the cause for the transformation of the hexagonal structure to an... unknown crystalline phase.
Keywords:
Zinc phospate / molecular sieves / molecular sieves / zincophosphates / zincophospate characterizationSource:
Zeolites, 1995, 15, 8, 672-678Publisher:
- Elsevier Science Inc.
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Rajić, Nevenka AU - Zabukovec Logar, Nataša AU - Kaučič, Venčeslav PY - 1995 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6387 AB - The crystallization of a reactive zincophosphate gel (which may contain Co(ll) component) in the presence of sodium cations at ambient temperature and pressure yielded products (abbreviated ZnPO-HEX or CoZnPO-HEX) with a novel anionic open framework topology. The Co(ll) ions isomorphously replace zinc(ll) in this zincophosphate lattice up to 30%. The hopeite phase appears as a precursor in the crystallization of these new products. The single crystal structure determination of CoZnPO-HEX reveals that the structure belongs to the hexagonal P61 space group with unit cell parameters a = 10.447(3) and c = 15.049(5) A. The structure consists of a three-dimensional tetrahedral framework containing one-dimensional six-ring channels. An in finite helix built up of sodium cations and water molecules has been found inside the channel. The helix plays an important structural role because a complete dehydration of the materials is the cause for the transformation of the hexagonal structure to an unknown crystalline phase. PB - Elsevier Science Inc. T2 - Zeolites T1 - A novel open framework zincophosphate: Synthesis and characterization EP - 678 IS - 8 SP - 672 VL - 15 DO - 10.1016/0144-2449(95)00083-I UR - https://hdl.handle.net/21.15107/rcub_technorep_6387 ER -
@article{ author = "Rajić, Nevenka and Zabukovec Logar, Nataša and Kaučič, Venčeslav", year = "1995", abstract = "The crystallization of a reactive zincophosphate gel (which may contain Co(ll) component) in the presence of sodium cations at ambient temperature and pressure yielded products (abbreviated ZnPO-HEX or CoZnPO-HEX) with a novel anionic open framework topology. The Co(ll) ions isomorphously replace zinc(ll) in this zincophosphate lattice up to 30%. The hopeite phase appears as a precursor in the crystallization of these new products. The single crystal structure determination of CoZnPO-HEX reveals that the structure belongs to the hexagonal P61 space group with unit cell parameters a = 10.447(3) and c = 15.049(5) A. The structure consists of a three-dimensional tetrahedral framework containing one-dimensional six-ring channels. An in finite helix built up of sodium cations and water molecules has been found inside the channel. The helix plays an important structural role because a complete dehydration of the materials is the cause for the transformation of the hexagonal structure to an unknown crystalline phase.", publisher = "Elsevier Science Inc.", journal = "Zeolites", title = "A novel open framework zincophosphate: Synthesis and characterization", pages = "678-672", number = "8", volume = "15", doi = "10.1016/0144-2449(95)00083-I", url = "https://hdl.handle.net/21.15107/rcub_technorep_6387" }
Rajić, N., Zabukovec Logar, N.,& Kaučič, V.. (1995). A novel open framework zincophosphate: Synthesis and characterization. in Zeolites Elsevier Science Inc.., 15(8), 672-678. https://doi.org/10.1016/0144-2449(95)00083-I https://hdl.handle.net/21.15107/rcub_technorep_6387
Rajić N, Zabukovec Logar N, Kaučič V. A novel open framework zincophosphate: Synthesis and characterization. in Zeolites. 1995;15(8):672-678. doi:10.1016/0144-2449(95)00083-I https://hdl.handle.net/21.15107/rcub_technorep_6387 .
Rajić, Nevenka, Zabukovec Logar, Nataša, Kaučič, Venčeslav, "A novel open framework zincophosphate: Synthesis and characterization" in Zeolites, 15, no. 8 (1995):672-678, https://doi.org/10.1016/0144-2449(95)00083-I ., https://hdl.handle.net/21.15107/rcub_technorep_6387 .