Correlation between particle size and surface area for chlorite and K-feldspar
Paper in proceedings, 2010

The specific surface area as determined by BET analysis is often used for scaling mineral surface reaction capacities and rates between particles of different sizes as found in nature. Generally, an inverse proportionality between BET area and particle size is assumed, based on geometry. However, macroscopic laboratory studies of mineral surface reactions generally employ crushed material that may have been me-chanically disturbed, potentially leading to an artificial increase in the specific surface area, and a change in the apparent surface reactivity. In this study, we determine the BET area for natural K-feldspar and chlorite samples from Sweden as function of particle size in a first step towards relating the surface reactivity for these minerals to grain size.

BET

particle size

surface area

granite

mineral

Author

Isabelle Dubois

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Stellan Holgersson

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Stefan Allard

Chalmers, Chemical and Biological Engineering, Nuclear Chemistry

Maria Malmström

Water-Rock Interaction. B. Torres-Alvarado. London, Taylor & Francis Group

717-720

Subject Categories

Other Earth and Related Environmental Sciences

Other Chemistry Topics

Areas of Advance

Energy

Materials Science

Roots

Basic sciences

ISBN

978-0-203-83404-6

More information

Created

10/7/2017