Green synthesis of hierarchical porous carbon prepared from coconut lumber sawdust as Ni-based catalyst support for hydrotreating Callophyllum inophyllum oil

Trisunaryanti, Wega; Wijaya, Karna; Triyono, Triyono; Adriani, Anggita Rahma; Larasati, Savitri

doi:10.1016/j.rineng.2021.100258

Cited by 23 publications

(6 citation statements)

References 61 publications

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“…First, the material is not a rigid structure and may deform, induced by adsorption or pore filling. Second, the trapped nitrogen cannot be released because of the affinity of nitrogen in the material caused by the heterogeneous property of the surface [33]; the adsorption potential of the pore wall traps the nitrogen molecules, which agrees with the observation that increasing temperature will deteriorate the hysteresis effect [34].…”

Section: A C C E P T E Dsupporting

confidence: 82%

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

Trisunaryanti

Azizah²,

Fatmawati³

et al. 2022

Indones. J. Chem.

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In the present work, optimum conditions for hydrocracking of waste palm cooking oil (WPCO) over a Ni-NH2/Lapindo mud catalyst were studied to obtain a high quantity and quality of biofuel. The utilized catalyst support material was Lapindo mud (LM) from Sidoarjo, Indonesia, which was only given physical treatment (i.e., washing, drying, grinding, and calcining). Ni/LM was prepared via wet impregnation in three different Ni weight loadings: 1, 5, and 10 wt.%, which were denoted as Ni(A)/LM, Ni(B)/LM, and Ni(C)/LM, respectively. As a result, the hydrocracking test of WPCO under the temperature of 470 °C and a feed/catalyst weight ratio of 50 showed that the Ni(A)/LM catalyst produced the highest liquid product reaching 46.65 wt.% among the other Ni-based catalysts. The liquid product can be increased drastically to 63.93 wt.% under a more optimum temperature at 550 °C. Functionalization of Ni(A)/LM as the best catalyst was carried out by grafting method with NH2 groups from 3-APTMS, resulting in Ni(A)-NH2/LM. This modification increased the liquid product to 68.17 wt.% under hydrocracking conditions using a weight ratio of 75. Moreover, the reusability of Ni(A)-NH2/LM was found to be effective for three hydrocracking runs, constantly yielding an average biofuel of 80 wt.%.

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Section: A C C E P T E Dsupporting

confidence: 82%

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

Trisunaryanti

Azizah²,

Fatmawati³

et al. 2022

Indones. J. Chem.

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“…Figure 2h displays the Ni lo Ni/rGO-450, which was 7.98%. The high metal dispersion in Ni/rGO-450 implies interaction between the metal and the support, which hinders clustering into lar gates [20]. The strong interaction is probably due to the C=O double-bond f groups on graphene sharing electron pairs with the empty orbitals of the meta The above results highlight the advantageous impact of using rGO as a catalyst as evidenced by the effective metal dispersion observed.…”

Section: Fabrication Process Of Ni/rgo Compositementioning

confidence: 73%

Facile Fabrication of Nickel Supported on Reduced Graphene Oxide Composite for Oxygen Reduction Reaction

Wang,

Qian,

et al. 2023

Nanomaterials

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Due to the depletion of fossil fuels, the demand for renewable energy has increased, thus stimulating the development of novel materials for energy conversion devices such as fuel cells. In this work, nickel nanoparticles loaded on reduced graphene oxide (Ni/rGO) with small size and good dispersibility were successfully prepared by controlling the pyrolysis temperature of the precursor at 450 °C, assisted by a microwave-assisted hydrothermal method, and exhibited enhanced electrocatalytic activity towards oxygen reduction reaction (ORR). Additionally, the electron enrichment on Ni NPs was due to charge transfer from the rGO support to metal nickel, as evidenced by both experimental and theoretical studies. Metal–support interactions between nickel and the rGO support also facilitated charge transfer, contributing to the enhanced ORR performance of the composite material. DFT calculations revealed that the first step (from O2 to HOO*) was the rate-determining step with an RDS energy barrier lower than that of the Pt(111), indicating favorable ORR kinetics. The HOO* intermediates can be transferred onto rGO by the solid-phase spillover effect, which reduces the chemical adsorption on the nickel surface, thereby allowing continuous regeneration of active nickel sites. The HO2− intermediates generated on the surface of rGO by 2e− reduction can also efficiently diffuse towards the nearby Ni surface or the interface of Ni/rGO, where they can be further rapidly reduced to OH−. This mechanism acts as the pseudo-four-electron path on the RRDE. Furthermore, Ni/rGO-450 demonstrated superior stability, methanol tolerance, and durability compared to a 20 wt% Pt/C catalyst, making it a cost-effective alternative to conventional noble metal ORR catalysts for fuel cells or metal–air batteries.

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“…This was mainly attributed to the linear relationship between the number of accessible acid sites and the catalytic activity as that was where the hydrocracking reactions took place. 66 As presented in Fig. 4, it can be seen that Na-bentonite had a low acidity value of 0.054 mmol g À1 , which was generated by the aluminosilicate framework bound to the pyridine.…”

Section: Catalyst Characterizationmentioning

confidence: 93%

Hydrocracking of crude palm oil to a biofuel using zirconium nitride and zirconium phosphide-modified bentonite

et al. 2022

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Green synthesis of hierarchical porous carbon prepared from coconut lumber sawdust as Ni-based catalyst support for hydrotreating Callophyllum inophyllum oil

Cited by 23 publications

References 61 publications

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

Performance of a Hybrid Catalyst from Amine Groups and Nickel Nanoparticles Immobilized on Lapindo Mud in Selective Production of Bio-hydrocarbons

Facile Fabrication of Nickel Supported on Reduced Graphene Oxide Composite for Oxygen Reduction Reaction

Hydrocracking of crude palm oil to a biofuel using zirconium nitride and zirconium phosphide-modified bentonite

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