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<p>The purpose of this study was to find out how well mesoporous carbon works and what kind of precursor salts, Ni(NO<sub>3</sub>)<sub>2</sub>∙6H<sub>2</sub>O and NiCl<sub>2</sub>∙6H<sub>2</sub>O, affect the hydrocracking of castor oil using a modified microwave oven-heated reactor. Mesoporous carbon was synthesized from teak sawdust waste with a variety of microwave oven power inputs.&#xa0;Microwaved mesoporous carbon (MMCx) was analyzed with the iodine number test, FTIR, XRD, and TEM. MMCx, which has the highest iodine number, was used as a support for Ni. Ni was impregnated by wet impregnation with precursor salts of Ni(NO<sub>3</sub>)<sub>2</sub>∙6H<sub>2</sub>O or NiCl<sub>2</sub>∙6H<sub>2</sub>O, followed by calcination, resulting in Ni(N)/MMCx and Ni(C)/MMCx catalysts for castor oil catalytic cracking. The catalysts were characterized using XRD, FTIR, AAS, TEM, SAA, and gravimetric acidity tests. The results showed that MMC3 had the highest iodine number of 654.7&#xa0;mg· g<sup>−1</sup>, with a specific surface area of 69.46 m<sup>2</sup>·g<sup>−1</sup> and an average pore diameter of 3.292&#xa0;nm. Ni(C)/MMC3 is the best performing catalyst with specific surface area of 177.2 m<sup>2</sup>·g<sup>−1</sup>, Ni content of 1.934 wt%, acidity of 6.793 mmol·g<sup>−1</sup>, liquid product of 23.23 wt%, and biohydrocarbon selectivity of 7.112 wt% at a hydrocracking temperature of 450 °C with catalyst/feed weight ratio of 1/200.</p> Graphical Abstract <p></p>

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Effect of Nickel Precursor Salt Variation in Ni/Mesoporous Carbon Catalyst Synthesis from Teak Sawdust Waste for Microwave-Assisted Hydrocracking of Castor Oil into Biofuel

  • 期刊论文

  • 发表日期：

    2025年2月21日

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  • Wega Trisunaryanti,
  • Triyono,
  • Ibnu Harris Nugrahagusti,
  • Jason Purbonegoro

摘要

The purpose of this study was to find out how well mesoporous carbon works and what kind of precursor salts, Ni(NO3)2∙6H2O and NiCl2∙6H2O, affect the hydrocracking of castor oil using a modified microwave oven-heated reactor. Mesoporous carbon was synthesized from teak sawdust waste with a variety of microwave oven power inputs. Microwaved mesoporous carbon (MMCx) was analyzed with the iodine number test, FTIR, XRD, and TEM. MMCx, which has the highest iodine number, was used as a support for Ni. Ni was impregnated by wet impregnation with precursor salts of Ni(NO3)2∙6H2O or NiCl2∙6H2O, followed by calcination, resulting in Ni(N)/MMCx and Ni(C)/MMCx catalysts for castor oil catalytic cracking. The catalysts were characterized using XRD, FTIR, AAS, TEM, SAA, and gravimetric acidity tests. The results showed that MMC3 had the highest iodine number of 654.7 mg· g−1, with a specific surface area of 69.46 m2·g−1 and an average pore diameter of 3.292 nm. Ni(C)/MMC3 is the best performing catalyst with specific surface area of 177.2 m2·g−1, Ni content of 1.934 wt%, acidity of 6.793 mmol·g−1, liquid product of 23.23 wt%, and biohydrocarbon selectivity of 7.112 wt% at a hydrocracking temperature of 450 °C with catalyst/feed weight ratio of 1/200.

Graphical Abstract