TY - JOUR
T1 - Optimization of γ-Alumina porosity via Response Surface Methodology
T2 - The influence of engineering support on the performance of a residual oil hydrotreating catalyst
AU - Salimi, Mohammad
AU - Tavasoli, Ahmad
AU - Rosendahl, Lasse
PY - 2020/6
Y1 - 2020/6
N2 - As is evident in the literature, co-precipitation process has been narrowly studied from the “process” point of view thus far, and consequently majority of this complex phenomenon remains unknown scientifically. This work firstly tries to screen in depth the synthesis procedure of γ-Alumina in terms of precipitation, whereas such key parameters governing this process as temperature, reactant concentrations, mixing rate, and aging time are thoroughly analyzed by using Response surface methodology (RSM) for the very first time. Considering some significant novel interactions between these variables, the porosity of the final materials in terms of Specific Surface Area (SSA), Total Pore Volume (TPV), and Mean Pore Diameter (MPD) could be adjusted without using any surfactant or other additional organic compounds. For instance, simultaneous enhancement in SSA, TPV, and MPD, respectively, up to 334.5 m2. g−1, 1.93 cm3.g−1, and 23.01 nm with a narrow pore size distribution were achieved only by adjusting the process variables which have not been reported ever before. Two optimized materials suggested by Central Composite Design (CCD) were reproduced, analyzed by using such techniques as XRD, FT-IR, BET, SEM, and TG analyses and then used to prepare final Hydrotreating (HDT) catalyst for application in a trickle bed continuous hydrotreater.
AB - As is evident in the literature, co-precipitation process has been narrowly studied from the “process” point of view thus far, and consequently majority of this complex phenomenon remains unknown scientifically. This work firstly tries to screen in depth the synthesis procedure of γ-Alumina in terms of precipitation, whereas such key parameters governing this process as temperature, reactant concentrations, mixing rate, and aging time are thoroughly analyzed by using Response surface methodology (RSM) for the very first time. Considering some significant novel interactions between these variables, the porosity of the final materials in terms of Specific Surface Area (SSA), Total Pore Volume (TPV), and Mean Pore Diameter (MPD) could be adjusted without using any surfactant or other additional organic compounds. For instance, simultaneous enhancement in SSA, TPV, and MPD, respectively, up to 334.5 m2. g−1, 1.93 cm3.g−1, and 23.01 nm with a narrow pore size distribution were achieved only by adjusting the process variables which have not been reported ever before. Two optimized materials suggested by Central Composite Design (CCD) were reproduced, analyzed by using such techniques as XRD, FT-IR, BET, SEM, and TG analyses and then used to prepare final Hydrotreating (HDT) catalyst for application in a trickle bed continuous hydrotreater.
KW - Alumina
KW - Precipitation
KW - Residual oil hydrotreating
KW - Response surface methodology (RSM)
KW - Supported catalysts
UR - http://www.scopus.com/inward/record.url?scp=85080895810&partnerID=8YFLogxK
U2 - 10.1016/j.micromeso.2020.110124
DO - 10.1016/j.micromeso.2020.110124
M3 - Journal article
AN - SCOPUS:85080895810
SN - 1387-1811
VL - 299
JO - Microporous and Mesoporous Materials
JF - Microporous and Mesoporous Materials
M1 - 110124
ER -