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Optimization of mesoporous alumina sol‐gel synthesis by Taguchi and response surface methodology
Author(s) -
Hosseinzadeh Fatemeh,
Sarpoolaky Hossein
Publication year - 2019
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13191
Subject(s) - response surface methodology , bet theory , mesoporous material , materials science , taguchi methods , calcination , adsorption , specific surface area , quadratic model , chemical engineering , composite material , mathematics , catalysis , statistics , chemistry , organic chemistry , engineering
Taguchi method (TM) and response surface methodology ( RSM ) have been employed to optimize three parameters, including the amounts of P123, the amounts of nitric acid and calcination temperature, in order to define an optimal setting for sol‐gel synthesis of high surface area mesoporous alumina powder ( MA ). Herein, the comparison of the both statistical approaches has been examined and discussed considering the nitrogen adsorption as the response variable because this important character for mesoporous materials is exceedingly sensitive to the synthesis parameters. The BET surface area ( S BET ) and pore volume of MA under Taguchi optimal condition were 323.5 m 2 g −1 and 0.551 cm 3 g −1 , respectively, by conducting confirmation test. Furthermore, the confirmation test showed high S BET of MA (363.4 m 2 g −1 ), which was in a good agreement with calculated S BET result (431.25 m 2 g −1 ) by a quadratic model under RSM optimal condition. Moreover, 3D response surface plots and 2D contour plots of desirability have been discussed to visualize the influence of input factors on response variable. It is also concluded that RSM shows more appropriate (12.33% higher S BET than TM) and efficient optimal condition with determining a quadratic function as the relationship between S BET and synthesis parameters.