2014 GSA Annual Meeting in Vancouver, British Columbia (1922 October 2014)
Paper No. 127-15
Presentation Time: 9:00 AM-6:30 PM

IMPROVING THE OLIVINE SOL-GEL SYNTHESIS METHOD

MANLEY, Josh, Department of Earth Sciences, University of Arkansas at Little Rock, 2801 S. University Avenue, Little Rock, AR 72204, jxmanley@ualr.edu, KING LOPEZ, Rachel A., Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, P. O. Box 5, Dyer, AR 72935, CANNON, Corbin II, University of Arkansas at Little Rock, 2801 S University Avenue, Little Rock, AR 72204, and DEANGELIS, Michael T., Earth Sciences, University of Arkansas at Little Rock, 2801 S University Avenue, Little Rock, AR 72204

Several previous sol-gel synthesis methods have successfully synthesized olivine at the nanoscale (Park et al. 1993; DeAngelis et al., 2014; Anovitz et al., in prep; Cannon et al., in prep). However, these previous methods often require more than 24 hours to complete each batch, producing variable composition, particulate and clump size, and overall yield. The goal of this project was to reexamine and improve the synthesis method by reducing time required to produce a batch while maintaining high synthesis yields and attaining the desired composition and particle size.

The synthesis method has been divided into three stages: gel formation, gel drying, and calcination. Possible improvements during the gel formation stage consist of reducing, and possibly eliminating, the addition of excess solvents, and limiting reflux mixing after reactant addition. The changes made during the gel drying stage focused on the combined use of a centrifuge and rotary evaporator to quickly remove solvents. Calcination stage changes include varying temperature, ramp time, hold time, cooling time, and furnace atmosphere. These preliminary method changes have already reduced the amount of time by 75% while still producing high yields (up to 10 g) of nanoscale olivine per batch.

2014 GSA Annual Meeting in Vancouver, British Columbia (1922 October 2014)
General Information for this Meeting
Session No. 127--Booth# 176
Mineralogy/Crystallography (Posters)
Vancouver Convention Centre-West: Exhibition Hall C
9:00 AM-6:30 PM, Monday, 20 October 2014


© Copyright 2014 The Geological Society of America (GSA), all rights reserved. Permission is hereby granted to the author(s) of this abstract to reproduce and distribute it freely, for noncommercial purposes. Permission is hereby granted to any individual scientist to download a single copy of this electronic file and reproduce up to 20 paper copies for noncommercial purposes advancing science and education, including classroom use, providing all reproductions include the complete content shown here, including the author information. All other forms of reproduction and/or transmittal are prohibited without written permission from GSA Copyright Permissions.