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Title: Diverse Physical States of Amorphous Precursors in Zeolite Sol Gel Syntheses

The assembly and structural evolution of amorphous precursors during zeolite crystallization is an important area of interest owing to their putative roles in the nucleation and growth of aluminosilicate microporous materials. Precursors range in complexity from oligomeric molecules and colloidal particles to gels comprised of heterogeneous silica and alumina domains. The physical state of precursors in most zeolite syntheses is generally not well understood; however, it is evident that the physicochemical properties of precursors depend on a wide range of conditions that include (but are not limited to) the selection of reagents, the composition of growth mixtures, the methods of preparation, and the use of inorganic and/or organic structure-directing agents. The fact that precursors evolve in size, shape, and/or microstructure during the course of nucleation and potentially throughout crystallization leads to questions pertaining to their mode of action in the formation of zeolites. Finally, this also highlights the diversity of species that are present in growth media, thus rendering the topic of zeolite synthesis essentially a black box to those attempting to better understand the fundamental role(s) of precursors. Here in this Article, we discuss the wide variety of precursors encountered in the synthesis of various framework types, emphasizing theirmore » complex physical states and the thermodynamic and kinetic factors that govern their heterogeneity.« less
Authors:
ORCiD logo [1] ;  [1] ;  [2] ;  [1] ; ORCiD logo [3] ; ORCiD logo [2] ; ORCiD logo [1]
  1. Univ. of Houston, Houston, TX (United States). Dept. of Chemical and Biomolecular Engineering
  2. Univ. of Alicante (Spain). Molecular Nanotechnology Lab., Dept. of Inorganic Chemistry
  3. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS), X-ray Science Division
Publication Date:
Grant/Contract Number:
AC02-06CH11357; SC0014468
Type:
Accepted Manuscript
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 57; Journal Issue: 25; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Welch Foundation; National Science Foundation (NSF)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE
OSTI Identifier:
1460955

Li, Rui, Chawla, Aseem, Linares, Noemi, Sutjianto, James G., Chapman, Karena W., Martinez, Javier García, and Rimer, Jeffrey D.. Diverse Physical States of Amorphous Precursors in Zeolite Sol Gel Syntheses. United States: N. p., Web. doi:10.1021/acs.iecr.8b01695.
Li, Rui, Chawla, Aseem, Linares, Noemi, Sutjianto, James G., Chapman, Karena W., Martinez, Javier García, & Rimer, Jeffrey D.. Diverse Physical States of Amorphous Precursors in Zeolite Sol Gel Syntheses. United States. doi:10.1021/acs.iecr.8b01695.
Li, Rui, Chawla, Aseem, Linares, Noemi, Sutjianto, James G., Chapman, Karena W., Martinez, Javier García, and Rimer, Jeffrey D.. 2018. "Diverse Physical States of Amorphous Precursors in Zeolite Sol Gel Syntheses". United States. doi:10.1021/acs.iecr.8b01695.
@article{osti_1460955,
title = {Diverse Physical States of Amorphous Precursors in Zeolite Sol Gel Syntheses},
author = {Li, Rui and Chawla, Aseem and Linares, Noemi and Sutjianto, James G. and Chapman, Karena W. and Martinez, Javier García and Rimer, Jeffrey D.},
abstractNote = {The assembly and structural evolution of amorphous precursors during zeolite crystallization is an important area of interest owing to their putative roles in the nucleation and growth of aluminosilicate microporous materials. Precursors range in complexity from oligomeric molecules and colloidal particles to gels comprised of heterogeneous silica and alumina domains. The physical state of precursors in most zeolite syntheses is generally not well understood; however, it is evident that the physicochemical properties of precursors depend on a wide range of conditions that include (but are not limited to) the selection of reagents, the composition of growth mixtures, the methods of preparation, and the use of inorganic and/or organic structure-directing agents. The fact that precursors evolve in size, shape, and/or microstructure during the course of nucleation and potentially throughout crystallization leads to questions pertaining to their mode of action in the formation of zeolites. Finally, this also highlights the diversity of species that are present in growth media, thus rendering the topic of zeolite synthesis essentially a black box to those attempting to better understand the fundamental role(s) of precursors. Here in this Article, we discuss the wide variety of precursors encountered in the synthesis of various framework types, emphasizing their complex physical states and the thermodynamic and kinetic factors that govern their heterogeneity.},
doi = {10.1021/acs.iecr.8b01695},
journal = {Industrial and Engineering Chemistry Research},
number = 25,
volume = 57,
place = {United States},
year = {2018},
month = {6}
}