A Caltech Library Service

Synthesis and characterization of high-silica LTA produced by direct synthesis using a combination of organic SDAs

Schmidt, Joel E. and Zones, Stacey I. and Davis, Mark E. (2014) Synthesis and characterization of high-silica LTA produced by direct synthesis using a combination of organic SDAs. In: 247th ACS National Meeting & Exposition, March 16-20, 2014, Dallas, TX.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Recent years have seen resurgence in 8-ring, large cage microporous materials for NO_x conversion, sepns., methanol-to-olefins reactions, and biomass applications. Systems that are currently being investigated include AFX, CHA, LEV and other 8-ring systems. Another promising framework for these applications could be LTA, which has 8-ring pores and LTA cages (are 11.4 Å in diam.). Zeolite A is unsuitable for these applications as conventional LTA synthesis results in a material with Si/Al=1. Tetramethylammonium cations can be used to obtain LTA with ca. Si/Al=3, but these materials are not suitable for the aforementioned applications due to poor hydrothermal stability and pore blockage due to cations. Corma and co-workers first reported the synthesis of germanosilicate, pure-silica and aluminosilicate LTA using a supramol. self-assembling org. SDA in 2004, denoted ITQ-29. This material showed great promise for applications in sepns., catalysis and low dielec. const. membranes. We have recently discovered a facile route to produce LTA using a combination of org. SDAs that do not require a supramol. assembly of the orgs. We will describe the synthetic procedure and the properties of materials formed.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Website
Davis, Mark E.0000-0001-8294-1477
Additional Information:© 2014 American Chemical Society.
Record Number:CaltechAUTHORS:20140505-160524389
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:45507
Deposited By: Tony Diaz
Deposited On:05 May 2014 23:32
Last Modified:09 Mar 2020 13:18

Repository Staff Only: item control page