Affordable Access

Publisher Website

Control of zeolite surface nucleation

Authors
Publisher
Elsevier Science & Technology
Identifiers
DOI: 10.1016/s0167-2991(05)80319-2

Abstract

A semi-continuous flow reactor was used to mimic gel supersaturation conditions at both intermediate and terminal stages of zeolite batch synthesis. Flow of nutrient into the reactor was repeatedly switched on and off. Analysis of the crystals by atomic force microscopy (AFM) reveals that samples removed under simulated conditions of gel depletion are topographically similar to samples prepared by normal batch synthesis, with very low levels of surface nucleation. Samples removed under conditions of high gel supersaturation appear to be growing by the same mechanism however rates of surface nucleation are increased by up to two orders of magnitude. Crystal growth resumes uperturbed upon reconnection of the nutrient feed. Ability to exert control over surface nucleation rates has important ramifications for the potential control of defect inclusion.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Molecular simulations of heterogeneous ice nucleat...

on The Journal of Chemical Physic... May 14, 2015

Nucleation control in metal surface oxidation

on Surface Science Jan 01, 1987

Surface area controlled heterogeneous nucleation.

on The Journal of Chemical Physic... Feb 07, 2012

Controlled release of paraquat from surface-modifi...

on Microporous and Mesoporous Mat... Jan 01, 2006
More articles like this..