Open AccessSurface Acidity of Silica-Alumina Catalysts in Relation to the Preparation Variables
Author(s) -
Juan R. GonzálezVelasco,
José A. GonzálezMarcos,
Jose Ignacio Gutiérrez-Ortiz,
Alfredo Salvador
Publication year - 1986
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361748600300206
Subject(s) - calcination , chemistry , catalysis , adsorption , factorial experiment , precipitation , inorganic chemistry , fractional factorial design , response surface methodology , chemical engineering , chromatography , organic chemistry , statistics , physics , meteorology , engineering , mathematics
Factorial and rotational designs have been used to analyse the effect of each preparative variable on the surface acid strength distribution in silica-alumina catalysts. Relationships between the surface acidities at p K a = 2·8, 3·3 and 4·8 and the most important variables, namely precipitation rate and temperature, drying pressure and temperature, impregnation concentration and calcination temperature have been obtained.