Influence of carbon casting loading and ultrasound irradiation on catalytic design of Al-Si-P zeotype nanostructure for biofuel production

摘要

Due to the large size of free fatty acid molecules, they cannot diffuse into Al-Si-P Zeotype pores in the biofuel production process. Therefore, in the current work, to rectify this problem, in the synthesis of Al -Si-P zeotype by hydrothermal method, various weight percentages of the carbon casting and ultrasound waves for the uniform of the materials were used. Moreover, to enhancement the acidic strength and catalyst performance, Ceric oxide was accommodated on the Al-Si-P zeotype structure by sonosolvothermal synthesis. TPD-NH3, FESEM, HRTEM, BET-BJH, and EDX analyses were utilized for characterizing the samples developed in the present work. BET analysis has revealed that the optimized percentage of charcoal active is 4 wt %. By adding the sonication technique at the stage accommodating Ceric oxide on Al-Si-P zeotype, the conversion percentage increased from 77 to 94%. Test of the capability of modified Al-Si-P Zeotype with sonication and carbon casting to produce biofuel from waste oil delivered a conversion of 91.5%. Kinetic studies have shown that reaction of oil to biofuel is of the first degree, and the modified Al-Si-P Zeotype with sonication and carbon casting has the highest rate constant (0.0014 min(-1)) among all of the synthesized samples. (C) 2021 Elsevier Ltd. All rights reserved.