Cooperative structure-directing effects in the synthesis of a low-silica zeolite phillipsite analogue
authors Shi, Q; Xu, H; Li, JP; Lin, Z; Dong, JX
nationality International
journal MICROPOROUS AND MESOPOROUS MATERIALS
author keywords Zeolite PHI analogue; Low-silica; Synthesis; Cooperative structure-directing effects
keywords POWDER DIFFRACTION; CRYSTAL STRUCTURE; HARMOTOME; SYSTEM
abstract A zeolite phillipsite (PHI) analogue with low silica contents has been synthesized from a NH(4)F-Al(2)O(3)-SiO(2)-piperazine-H(2)O system. The obtained zeolite PHI analogue grows as agglomerates of intergrown submicron-sized crystals. The synthesis process in fluoride-based media has been investigated. It has been unequivocally demonstrated that no zeolite phase occurred in the absence of piperazine or NH(4)F. The results of CHN elemental analyses as well as of TG analyses confirmed that both piperazine and NH(4)(+) had been incorporated into the zeolitic structure. Thus, the zeolite PHI analogue is seemingly derived from the cooperative structure-directing effect of the organic molecule piperazine and the inorganic cation NH(4)(+). The use of a suitable combination of inorganic cation and organic molecule in fluoride-based media may provide an effective means of exploring new frameworks with low Si/Al ratios. (C) 2009 Elsevier Inc. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1387-1811
year published 2009
volume 121
issue 1-3
beginning page 152
ending page 157
digital object identifier (doi) 10.1016/j.micromeso.2009.01.023
web of science category Chemistry, Applied; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary
subject category Chemistry; Science & Technology - Other Topics; Materials Science
unique article identifier WOS:000265326400021
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 4.551
5 year journal impact factor 4.157
category normalized journal impact factor percentile 71.108
dimensions (citation analysis):
altmetrics (social interaction):



 


Sponsors

1suponsers_list_ciceco.jpg