Preparation of Biodiesel by Transesterification of Rapeseed Oil with Methanol Using Solid Base Catalyst Calcined K₂CO₃/γ‐Al₂O₃

Abstract

We report here the preparation of biodiesel by transesterification of rapeseed oil with methanol using calcined K 2 CO 3 /c-Al 2 O 3 as a solid base catalyst. The prepared catalysts were characterized using SEM, IR and BET, and their catalytic activities were evaluated. The reaction conditions were optimized, and in particular, the conversion can be as high as 98.62% under the optimal reaction conditions. In addition, the effect of the presence of water in the reaction system on the catalytic activity was also studied.

Production of biodiesel from Jatropha oil catalyzed by nanosized solid basic catalyst

“…However, it was observed that at molar ratios above 4/1, excessive methanol had no significant effect on the yield. Conversely, a longer time was required for the subsequent separation stage because separation of the esters layer from glycerol was difficult due to the fact that methanol with one polar hydroxyl group could emulsify the products [29]. Hence, the best methanol/oil molar ratio was selected as 4/1.…”

Statistical Optimization of the Biodiesel Production Process Using a Magnetic Core‐Mesoporous Shell KOH/Fe3O4@γ‐Al2O3 Nanocatalyst

“…More recently, there has been an increasing development of solid base catalysts, such as NaOH, KOH, KNO 3 , K 2 CO 3 , KI, and KF supported on alumina and zeolites [19][20][21][22][23][24]. The KOH/ bentonite catalyst was used for the transesterification of palm oil to biodiesel by Soetaredjo et al [20].…”

Effects of Weight Hourly Space Velocity and Catalyst Diameter on Performance of Hybrid Catalytic-Plasma Reactor for Biodiesel Synthesis over Sulphated Zinc Oxide Acid Catalyst

“…Biodiesel has higher cetane number than petroleum diesel, biodegradable, contains no sulphur and aromatic compounds and resulting in lower emissions than petroleum diesel [1][2][3][4]. Various methods have been employed for biodiesel production, both conventional [5][6][7][8], enzymatic [9][10][11], or even advanced technologies [12][13][14][15][16] methods. Conventionally, biodiesel was produced by homogeneous and heterogeneous catalysts, either acid or base catalysts as previously found [5][6][7][8].…”

“…Various methods have been employed for biodiesel production, both conventional [5][6][7][8], enzymatic [9][10][11], or even advanced technologies [12][13][14][15][16] methods. Conventionally, biodiesel was produced by homogeneous and heterogeneous catalysts, either acid or base catalysts as previously found [5][6][7][8]. However, transesterification reaction using homogeneous catalysts are constrained by the complexity of the purification and separation steps [17,18].…”