Patent ID: 7264777
Filing Date: 2007-09-04
Classification: B01J,G01N,Y10T

Abstract:
1. A method of quantitatively determining the surface area and mass of smectite in a sample, comprising the steps of: selecting a solution; dispersing a sample comprising smectite in the solution; adding a quantitative mass of polyvinylpyrrolidone in the solution, wherein the polyvinylpyrrolidone deposits on the surface of the smectite; removing at least a portion of the solution having the added polyvinylpyrrolidone that has not deposited on the dispersed smectite; determining the mass of the polyvinylpyrrolidone deposited on the surface area of the smectite from the transfer of polyvinylpyrrolidone from the solution to the surface of the smectite; calculating the smectite area of the smectite from the determined mass of the polyvinylpyrrolidone deposited on the surface area of the smectite; and determining the mass of smectite in the sample from the calculated surface area.