Analysis of the Effect of Variations of Silica Concentration on Synthesis γ-Al2O3

Abstract

Research has been carried out to analyze the effect of variations in silica concentration on the synthesis of γ-Al₂O₃. This research was conducted to determine the variation of Silica against the support γ-Al₂O₃which is the best as a hydrotreating catalyst in the green fuel industry by using several physical characteristics and analyzing the effect of silica variations on the surface area, pore volume, and pore size of the support. This study uses materials such as Boehmite (AlOOH), equates, 25% NH4OH solution, 6% HNO3, and several variations of Silica such as (Carboxyl, SIRAL, and ZSM). In the process of making supports γ-Al₂O₃with the sol-gel method in order to homogenize the solutions and silica powders as a buffer variant, it becomes AlOH powder, which is then printed with a press and calcined at a temperature of 550^oC gradually to become powder.buffer γ-Al₂O₃. From the study results, the best variation of γ-Al₂O₃ silica buffer was carboxyl with a concentration of 6% because several characterization studies showed superior results to γ-Al₂O₃ support without silica variation. The results of the Surface Area Analyzer characterization greatly affect the hydrotreating catalyst process in the green fuel industry, namely the γ-Al₂O₃ buffer with the addition of 6% silica carboxyl concentration. This is because a large surface area, pore size, and large pore volume can contain more impregnant solution, and the amount of active phase dispersed will also be greater.