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Ethanol steam reforming with Co 0 (111) for hydrogen and carbon nanofilament generation

机译：用Co 0（111）进行乙醇蒸汽重整以产生氢和碳纳米丝

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The cobalt metal catalysts are highly active at low temperature ESR. In this study, ESR was studied over barren Co metal (Co0) from oxalate precursor without any pre-reduction to find out its role in hydrogen and carbon nano-filament generation. The ethanol conversion was found to be 100% with 96.5% hydrogen selectivity at 723K. The time on stream (TOS) study has shown stability up to 19h for Co catalyst. The diameter of Co-carbon nanofilament was calculated and found to be typically in the range of 70–80?nm by the TEM image analysis of spent catalyst. The SEM with EDS analysis revealed that Co0 state was found in between the carbon nanofilament as well as at the tip of carbon nanofilament. The obtained Co-C nanofilament displayed an adsorption capacity of 552?mg/g at optimum parameter of pH?=?2, contact time?=?60 minute, concentration?=?30?ppm, dose = 0.05g for Orange G dye removal without any chemical or physical treatment. This approach has shown significant results in terms of hydrogen generation and method of Co carbon nanofilament for further utilization in different prospects.
机译：钴金属催化剂在低温ESR下具有高活性。在这项研究中，对草酸盐前体中的贫钴金属（Co 0 ）进行了ESR研究，未进行任何预还原，以了解其在氢和碳纳米丝生成中的作用。发现在723K下乙醇转化率为100％，氢选择性为96.5％。生产时间（TOS）研究表明，Co催化剂的稳定性长达19h。计算了Co-碳纳米丝的直径，通过对废催化剂的TEM图像分析发现其直径通常在70-80？nm的范围内。用EDS分析的SEM表明，在碳纳米丝之间以及碳纳米丝尖端发现了Co 0 状态。获得的Co-C纳米丝在最佳pH值=？2，接触时间？=？60分钟，浓度？=？30？ppm，剂量= 0.05g（对于橙色G染料）的最佳参数下显示的吸附容量为552？mg / g。无需任何化学或物理处理即可清除。这种方法在制氢和钴碳纳米丝的制备方法方面显示出显着的成果，可以在不同的前景中进一步利用。

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