Ethanol steam reforming study over ZSM-5 supported cobalt versus nickel catalyst for renewable hydrogen generation

Kumar, Ashutosh; Прасад, Рам; Sharma, Yogesh Chandra

doi:10.1016/j.cjche.2018.03.036

Cited by 19 publications

(9 citation statements)

References 46 publications

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“…Furthermore, the peak at 660 cm –1 was attributed to the Co–O stretching vibration of Co 3 O 4 in Co-ZSM-5 and FeCo-ZSM-5-1:2. 51 However, there was no obvious peak of Fe 2 O 3 at 540 cm –1 owing to the overlap with ZSM-5 peaks.…”

Section: Resultsmentioning

confidence: 95%

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

et al. 2022

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Iron- and cobalt-based heterogeneous catalysts are widely applied for activating peroxymonosulfate (PMS) to degrade organic pollutants. However, few studies have unveiled the clear synergistic mechanism of iron and cobalt in ZSM-5. In this paper, the synergistic mechanism of enhanced PMS activation was revealed by constructing iron and cobalt bimetal modified ZSM-5 zeolite catalysts (FeCo-ZSM-5). The tetracycline hydrochloride (TCH) degradation experiments showed that the catalytic activity of FeCo-ZSM-5-2:3 was much higher than those of Fe-ZSM-5 and Co-ZSM-5. In addition, the influences of catalyst dosage, PMS concentration, reaction temperature, initial pH, and coexisting ions on TCH removal were systematically investigated in this paper. Density functional theory calculations indicated that Co was the main active site for PMS adsorption, and Fe increased the area of Co’s positive potential mapped to the electron cloud. The Fe–Co bimetallic doping increased the area of positive potential mapped to the electron cloud and benefited the adsorption of PMS on the catalyst surface, which revealed the synergistic mechanism of bimetals. Electron paramagnetic resonance spectra and quenching experiments showed that sulfate radicals, singlet oxygen, and hydroxyl radicals were involved in the degradation of TCH. Furthermore, liquid chromatography–mass spectrometry was conducted to propose possible degradation pathways. This work provides certain guiding significance in understanding the synergistic effect of heterogeneous catalysts for tetracycline wastewater treatment.

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Section: Resultsmentioning

confidence: 95%

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

et al. 2022

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“…Conventional energy generated from fossil fuels is limited and subsidiary to several environmental issues [1,2,3,4,5]. So, search for an alternative and renewable energy sources has been instigated for a long-term solution to this problem.…”

Section: Introductionmentioning

confidence: 99%

“…In the present day, this is an ideal energy carrier to be used in the petrochemical, automobile and chemical industry sectors [12]. Future fuel cell market will also be dependent fully on hydrogen as a primary fuel source [3,4,5]. It can be formed from various sources of raw materials such as higher hydrocarbons, green house gases, refinery gases and renewable materials such as wood, organic solid waste, sewages and alcohols derived from biomasses [1,2,3,4,5,6,7,13,14,15,16,17,18,19,20,21,22,23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Future fuel cell market will also be dependent fully on hydrogen as a primary fuel source [3,4,5]. It can be formed from various sources of raw materials such as higher hydrocarbons, green house gases, refinery gases and renewable materials such as wood, organic solid waste, sewages and alcohols derived from biomasses [1,2,3,4,5,6,7,13,14,15,16,17,18,19,20,21,22,23,24]. Out of these, methanol has been widely used as a liquid fuel for production of hydrogen by different conversion technologies because of its high H 2 content, low-cost, easy storage and convenient transportation [16,25,26,27,28,29,30].…”

Section: Introductionmentioning

confidence: 99%

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Enhanced hydrogen generation efficiency of methanol using dielectric barrier discharge plasma methodology and conducting sea water as an electrode

Panda

Sahu

2020

Heliyon

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In this work, methanol decomposition method has been discussed for the production of hydrogen gas with the application of plasma. A simple dielectric barrier discharge (DBD) plasma reactor was designed for this purpose with two types of electrode. The DBD plasma reactor was experimented by substituting one of the metal electrodes with feebly conducting sea water which yielded better efficiency in producing hydrogen gas. Experimental parameters such as; discharge voltage and time were varied by maintaining a discharge gap of 1.5 mm and the plasma discharge characteristics were studied. Filamentary type micro-discharges were found to be formed which was observed as numerous streamer clusters in the current waveform. Gas chromatographic study confirmed the production of hydrogen gas with residence time around 3.6 min. Although, the concentration (%) of H 2 was high (98.1 %) and consistent with copper electrode assembly, the rate of formation and concentration was found to be the highest (98.7 %) for water electrode for specific discharge voltage. The energy efficiency was found to be 0.5 mol H 2 /kWh and 1.2 mol H 2 /kWh for metal (Cu) and water electrodes respectively. The electrode material significantly affects the plasma condition and hence the rate of hydrogen production. Compositional analysis of the water used as electrode showed a minimal change in the composition even after the completion of the experiment as compared to the untreated water. Methanol degradation study shows the presence of untreated methanol in the residue of the plasma reactor which has been confirmed from the absorption spectra.

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“…1,2 Hydrogen is an environmentally friendly source of energy widely used in fuel cells, power and transportation sources, and other areas. 3,4 Hydrogen has numerous applications in refineries, petrochemical plants, and organic and inorganic synthesis. However, it is not easily available in the nature.…”

mentioning

confidence: 99%

Methanol steam reforming over Cu supported on SiO ₂ , amorphous SiO ₂ ‐Al ₂ O ₃ , and Al ₂ O ₃ catalysts: Influence

Khanchi

Mousavian

Soltanali³

2021

Intl J of Energy Research

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SiO 2 -, Al 2 O 3 -, and SiO 2 -Al 2 O 3 -based catalysts containing different Si/Al ratios have been prepared to study the effect of the support nature on the methanol steam reforming process catalyst. Methanol steam reforming reaction was carried out using each of the catalysts in the temperature range of 150 C to 300 C, weight hourly space velocity (WHSV) of 1.8 h À1 , and atmospheric conditions in a quartz reactor. The properties of the synthesized catalysts were determined by the X-ray powder diffraction (XRD), Brunauer-Emmett-Teller (BET), field emission scanning electron microscopy (FESEM), Fourier transform infrared spectroscopy (FTIR), H 2 -temperature-programmed reduction (TPR), and temperature-programmed desorption (TPD) techniques. SiO 2 -Al 2 O 3 -based catalysts showed better performance (yield @300 C: 87.2%

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Ethanol steam reforming study over ZSM-5 supported cobalt versus nickel catalyst for renewable hydrogen generation

Cited by 19 publications

References 46 publications

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

Enhanced hydrogen generation efficiency of methanol using dielectric barrier discharge plasma methodology and conducting sea water as an electrode

Methanol steam reforming over Cu supported on SiO ₂ , amorphous SiO ₂ ‐Al ₂ O ₃ , and Al ₂ O ₃ catalysts: Influence

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Ethanol steam reforming study over ZSM-5 supported cobalt versus nickel catalyst for renewable hydrogen generation

Cited by 19 publications

References 46 publications

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

Understanding the Iron-Cobalt Synergies in ZSM-5: Enhanced Peroxymonosulfate Activation and Organic Pollutant Degradation

Enhanced hydrogen generation efficiency of methanol using dielectric barrier discharge plasma methodology and conducting sea water as an electrode

Methanol steam reforming over Cu supported on SiO 2 , amorphous SiO 2 ‐Al 2 O 3 , and Al 2 O 3 catalysts: Influence

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Methanol steam reforming over Cu supported on SiO ₂ , amorphous SiO ₂ ‐Al ₂ O ₃ , and Al ₂ O ₃ catalysts: Influence