The Effect of Metal Loading on the Performance of Tri-metallic Supported Catalyst for Carbon Nanotubes Synthesis from Liquefied Petroleum Gas

Setyopratomo, Puguh; Wulan, Praswasti Pembangun Dyah Kencana; Sudibandriyo, Mahmud

doi:10.14716/ijtech.v9i1.1165

Cited by 7 publications

(2 citation statements)

References 23 publications

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“…It has demonstrated that the pore volume of the catalyst may have an important effect on the CNT yield. The high capacity of pore volume promotes the reduction of the barriers to diffusion and transport, which enable biogas molecules to distribute deep into the inner surface of the catalyst and result in a higher CNTs yield 57 . Besides, it has been reported that the Mo 2 C phase enhances the diffusivity of carbon atoms into neighboring Ni nanoparticles, avoiding the encapsulation of carbon deposition and leading to CNT growth 42 , 58 .…”

Section: Resultsmentioning

confidence: 99%

Development of Ni–Mo carbide catalyst for production of syngas and CNTs by dry reforming of biogas

Saconsint,

Srifa,

Koo-Amornpattana

et al. 2023

Sci Rep

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Biogas has been widely regarded as a promising source of renewable energy. Recently, the direct conversion of biogas over heterogeneous catalysts for the simultaneous production of syngas and carbon nanotubes exhibits a high potential for full utilization of biogas with great benefits. Involving the combined dry reforming of methane and catalytic decomposition of methane, the efficiency of process is strongly depended on the catalyst activity/stability, mainly caused by carbon deposition. In this study, Ni–Mo catalyst is engineered to provide a life-long performance and perform high activity in the combined process. The surface modification of catalysts by a controlled carburization pretreatment is proposed for the first time to produce a carbide catalyst along with improving the catalyst stability as well as the reactivity for direct conversion of biogas. The performance of as-prepared carbide catalysts is investigated with comparison to the oxide and metallic ones. As a result, the Ni–Mo2C catalyst exhibited superior activity and stability over its counterparts, even though the condensed nanocarbon was largely grown and covered on the surface. In addition, up to 82% of CH4 conversion and 93% of CO2 conversion could remain almost constant at 800 °C throughout the entire test period of 3 h under a high flowrate inlet stream of pure biogas at 48,000 cm3 g−1 h−1. The XPS spectra of catalysts confirmed that the presence of Mo2C species on the catalyst surface could promote the stability and reactivity of the catalyst, resulting in higher productivity of carbon nanotubes over a longer time.

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Section: Resultsmentioning

confidence: 99%

Development of Ni–Mo carbide catalyst for production of syngas and CNTs by dry reforming of biogas

Saconsint,

Srifa,

Koo-Amornpattana

et al. 2023

Sci Rep

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“…CNTs are allotropes of the carbon family with hollow cylinder structures. Based on the chirality angle divergence of the graphene sheet, their electronic properties may vary between metallic and semiconducting CNTs exist as single-walled, dual-walled or multiwalled (Setyopratomo et al, 2018;Thanthirige et al, 2016). Consisting only of surface (i.e., no bulk C-atoms), they are extremely sensitive and responsive to surface modification and optical excitation.…”

Section: Introductionmentioning

confidence: 99%

Optoelectronic Characterization and Properties of Single-walled Carbon Nanotubes in a Liquid Dispersion Form

Alabsi¹,

Khir²,

Dennis³

et al. 2023

IJTech

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Carbon nanotubes (CNTs) are very promising nanodevices due to their extraordinary electrical, thermal, and optical properties. However, as-grown single-walled CNTs (SWCNTs) contain a mixture of semiconducting and metallic species with great features versatility and variation. Solution-based processing of this nanomaterial is vital for further implementation in applicable platforms. In this paper, important optoelectronic intrinsic properties of SWCNTs in dispersions are studied applying a semi-empirical approach of optical characterization and Tauc/Davis-Mott relation and Max-Planck equations. SWCNTs are found to have a direct bandgap of 2.20 eV, an indirect bandgap of 0.27 eV, an optical conductivity of about 10 7 S cm -1 , and exhibited a metamaterial behavior ascribed to the high negative permittivity. In addition, the optimum parameters for the dispersion of SWCNTs, and the separation of the semiconducting species using simple mechanical methods of ultrasonication and density gradient ultracentrifugation, respectively, without using surfactants are also presented.

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Adsorption performance and mechanisms of Co2+ onto carboxyl-functionalized carbon nanotubes

Zhuang,

Mei,

Wang

2023

Journal of Cleaner Production

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The Effect of Metal Loading on the Performance of Tri-metallic Supported Catalyst for Carbon Nanotubes Synthesis from Liquefied Petroleum Gas

Cited by 7 publications

References 23 publications

Development of Ni–Mo carbide catalyst for production of syngas and CNTs by dry reforming of biogas

Development of Ni–Mo carbide catalyst for production of syngas and CNTs by dry reforming of biogas

Optoelectronic Characterization and Properties of Single-walled Carbon Nanotubes in a Liquid Dispersion Form

Adsorption performance and mechanisms of Co2+ onto carboxyl-functionalized carbon nanotubes

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