Dry reforming of greenhouse gases CH4/CO2 over MgO-promoted Ni–Co/Al2O3–ZrO2 nanocatalyst: effect of MgO addition via sol–gel method on catalytic properties and hydrogen yield

Sajjadi, Seyed Mehdi; Haghighi, Mohammad; Rahmani, Farhad

doi:10.1007/s10971-014-3280-1

Cited by 81 publications

(29 citation statements)

References 71 publications

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“…The CeO2 supported Co catalyst however has a higher activity toward H2 with yield of 41.98% for at unity feed ratio and 1023 K compared to CO. This trend is in agreement with the work of [35] in their studies on methane dry reforming over MgO promoted NiCo/Al2O3-ZrO2 nanocatalyst. However, their findings show a higher yield of CO compared to H2.…”

Section: Catalyst Activitysupporting

confidence: 92%

Production of CO-rich Hydrogen Gas from Methane Dry Reforming over Co/CeO2 Catalyst

Ayodele

Khan

Cheng

2016

Bull. Chem. React. Eng. Catal.

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Production of CO-rich hydrogen gas from methane dry reforming was investigated over CeO2-supported Co catalyst. The catalyst was synthesized by wet impregnation and subsequently characterized by field emission scanning electron microscope (FESEM), energy-dispersive X-ray spectroscopy (EDX), liquid N2 adsorption-desorption, X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) for the structure, surface and thermal properties. The catalytic activity test of the Co/CeO2 was investigated between 923-1023 K under reaction conditions in a stainless steel fixed bed reactor. The composition of the products (CO and H2) from the methane dry reforming reaction was measured by gas chromatography (GC) coupled with thermal conductivity detector (TCD). The effects of feed ratios and reaction temperatures were investigated on the catalytic activity toward product selectivity, yield, and syngas ratio. Significantly, the selectivity and yield of both H2 and CO increases with feed ratio and temperature. However, the catalyst shows higher activity towards CO selectivity. The highest H2 and CO selectivity of 19.56% and 20.95% respectively were obtained at 1023 K while the highest yield of 41.98% and 38.05% were recorded for H2 and CO under the same condition.

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Section: Catalyst Activitysupporting

confidence: 92%

Production of CO-rich Hydrogen Gas from Methane Dry Reforming over Co/CeO2 Catalyst

Ayodele

Khan

Cheng

2016

Bull. Chem. React. Eng. Catal.

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“…These include new catalyst design (including promotion, deposition, support variation, and structural designs), varying reaction conditions (such as temperature, pressure, and reactant ratios), and reactor design [42][43][44][45][46][47][48]. Catalyst preparation conditions can also have dramatic effects [49][50][51].…”

Section: Nature Of Coke Depositsmentioning

confidence: 99%

A review on coke management during dry reforming of methane

Muraza

Galadima

2015

Int. J. Energy Res.

310

139

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Summary The dry (CO2) reforming of methane is a great promising technology, particularly because of its dual advantages of natural gas valorization and mitigating global warming via carbon dioxide sequestration. However, coke management is the most difficult problem in commercialization of the process. We have therefore examined in this paper the various catalytic systems being evaluated for the dry reforming with emphasis on operating parameters, activity, and coke deposition. Other factors such as the catalyst promoter, the reactor system, and the periodical regeneration were also critically reviewed. The benefits of utilizing methane from natural gas and other sources, where carbon dioxide is considered as an impurity component, are emphasized. Structured basic catalysts, with periodic regeneration certainties, are strong candidates for industrial applications. Therefore, efforts to build commercial scales for the benefit of global energy industries were highlighted. Copyright © 2015 John Wiley & Sons, Ltd.

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“…The peak at wavenumber of 1,650 cm −1 is attributed to the physical adsorption of water and is more intense for composite and SAPO‐34 catalysts, which indicates better adsorption capability of these catalysts than ZSM‐5 sample. The bond at 2,345 cm −1 arises from physical adsorption of CO 2 from surrounding . The peak at 3,450 cm −1 is attributed to the hydroxyl groups (especially, Si‐OH‐Al groups), which are responsible for the Brønsted acidic sites of SAPO‐34 and have the greatest importance in activity and lifetime of SAPO‐34 catalyst.…”

Section: Resultsmentioning

confidence: 99%

Enhanced stability and propylene yield in methanol to light olefins conversion over nanostructured SAPO‐34/ZSM‐5 composite with various SAPO‐loadings

Mohammadkhani

Haghighi

Aghaei

2018

Asia-Pacific J Chem Eng

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Nanostructured core‐shell silicoaluminophosphate (SAPO)‐34/zeolite socony mobil (ZSM)‐5 composite has been synthesized with various SAPO‐34 loadings in order to control light olefins selectivity and increase its lifetime in methanol to olefins process. Physicochemical properties and catalytic performance of SAPO‐34/ZSM‐5 composite catalyst were different, compared with the parent SAPO‐34 and ZSM‐5. As‐synthesized samples were characterized by different methods such as X‐Ray diffraction, field emission scanning electron microscopy, Brunauer–Emmett–Teller, energy‐dispersive X‐ray, Fourier transform infrared spectroscopy, and NH3‐temperature‐programmed desorption techniques. By increasing SAPO‐34 content in composite catalysts, relative crystallinity of CHA‐phase (chabazite) was enhanced, whereas it was decreased for MFI‐phase. Also, surface area improved by increasing SAPO‐34 loading in core‐shell composite catalysts. The results of the activity test showed that lifetime remarkably increased by using composite catalysts. Compared with the parent SAPO‐34 and ZSM‐5, the composite catalyst with 80% SAPO‐34 loading showed higher methanol conversion and olefins selectivity with time on stream. This is due to the synergic effect between SAPO‐34 and ZSM‐5 zeolites in composite catalyst.

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Dry reforming of greenhouse gases CH4/CO2 over MgO-promoted Ni–Co/Al2O3–ZrO2 nanocatalyst: effect of MgO addition via sol–gel method on catalytic properties and hydrogen yield

Cited by 81 publications

References 71 publications

Production of CO-rich Hydrogen Gas from Methane Dry Reforming over Co/CeO2 Catalyst

Production of CO-rich Hydrogen Gas from Methane Dry Reforming over Co/CeO2 Catalyst

A review on coke management during dry reforming of methane

Enhanced stability and propylene yield in methanol to light olefins conversion over nanostructured SAPO‐34/ZSM‐5 composite with various SAPO‐loadings

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