Cerium-promoted bi-functional hybrid materials made of Ni, Co and hydrotalcite for sorption-enhanced steam methane reforming (SESMR)

Ghungrud, Swapnil A.; Dewoolkar, Karan D.; Vaidya, Prakash D.

doi:10.1016/j.ijhydene.2018.11.002

Cited by 40 publications

(12 citation statements)

References 51 publications

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“…These catalytic features were superior to those of similar materials used by us in a recent work. 47 In Figure 2a−c, SEM images are represented. The porous structure of all materials is evident.…”

Section: Resultsmentioning

confidence: 99%

“…The third desorption peak obtained at about 855 K was possibly due to the strong basic sites derived from CO 2 desorption, which were bonded with low-coordination oxygen anions. 47,51 HM1 and HM2 exhibited desorption peaks with strong basic sites. A plausible reason for such high basicity was the use of CeO 2 and ZrO 2 , which introduces low-coordinated oxygen vacancies in the structure and results in the dissociative adsorption of CO 2 .…”

Section: Resultsmentioning

confidence: 99%

“…In an earlier work, the setup was described. 47 It was supplied by Chemito Technologies Pvt. Ltd. (Mumbai).…”

Section: Methodsmentioning

confidence: 99%

“…Overall, the results were encouraging because performance was better than that of materials used in previous works, even at low temperature. 19,47 3.5. Effect of S/C Ratio on SESRE.…”

Section: → +mentioning

confidence: 99%

“…The utilization of excess steam makes regeneration easier and inhibits carbon deposition. 18,47 After every cycle, H 2 and CO 2 contents in the outlet gas were recorded. The results over 20 cycles are represented in Figure 11a−c.…”

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Ghungrud

Vaidya

2019

Ind. Eng. Chem. Res.

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Hydrogen (H 2 ) was produced via sorption-enhanced steam reforming of ethanol (SESRE) over multifunctional hybrid materials made of cobalt (10 wt %) and a Ca-based sorbent modified by CeO 2 , ZrO 2 , and MgO. SESRE provides an excellent opportunity for producing pure H 2 from renewable ethanol by merging catalytic steam reforming and removal of the co-product carbon dioxide (CO 2 ) in a single process. The chosen hybrid materials were synthesized using the coprecipitation method and denoted as Co−CaO/CeO 2 (or HM1), Co−CaO/ZrO 2 (or HM2), and Co−CaO/MgO (or HM3). Their features were investigated using electron microscopy, X-ray diffraction, and CO 2 -temperature-programmed desorption. Their sorption capacity and adsorption breakthrough time were determined. All of the chosen materials performed remarkably well and improved H 2 production. Especially, hybrid materials containing cerium (HM1) and zirconium (HM2) displayed better adsorption capacity and extended breakthrough time than those bearing magnesium (HM3). At T = 773 K, HM1 showed the longest breakthrough time (45 min) and adsorption capacity (5.61 mol CO 2 /kg sorbent). Material HM2 demonstrated its highest breakthrough time (30 min) and adsorption capacity (3.78 mol CO 2 /kg sorbent) at T = 723 K and produced >85 mol % H 2 . HM3 displayed the highest breakthrough time (15 min) and adsorption capacity (1.51 mol CO 2 /kg sorbent) at T = 773 K, producing >75 mol % H 2 . The effects of reaction temperature, steam-tocarbon ratio in the feed, and gas hourly space velocity on the SESRE process were investigated. The performance of HM1, HM2, and HM3 was assessed over 20 cycles, and it was found that they were stable for up to 13, 10, and 5 cycles. Finally, probable reaction pathways for SESRE were discussed.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

“…In an earlier work, the setup was described. 47 It was supplied by Chemito Technologies Pvt. Ltd. (Mumbai).…”

Section: Methodsmentioning

confidence: 99%

“…Overall, the results were encouraging because performance was better than that of materials used in previous works, even at low temperature. 19,47 3.5. Effect of S/C Ratio on SESRE.…”

Section: → +mentioning

confidence: 99%

Section: Industrial and Engineering Chemistry Researchmentioning

confidence: 99%

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Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Ghungrud

Vaidya

2019

Ind. Eng. Chem. Res.

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Exploring Dry Reforming of CH₄ to Syngas Using High‐Entropy Materials: A Novel Emerging Approach

Bhaskaran,

Roy

2024

ChemCatChem

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The high global warming potential of natural gas methane necessitates its conversion to valuable products, typically achieved through syngas production, with dry reforming of methane and integrating carbon capture followed by dry reforming of methane standing out among different technologies for methane valorization. However, persistent challenges such as the reverse water gas shift reaction, coke formation, and sintering associated with methane dry reforming have redirected scientific focus toward multi‐metallic catalysts with supports or promoters. High entropy materials have gained attention as promising catalysts because their flexible composition allows fine‐tuning of lattice oxygen reactivity and catalytic activity. Entropy plays a key role in catalysis, and recent research focuses on the enthalpy‐entropy relationship that influences reaction pathways. Alongside entropy, core effects like lattice distortion, sluggish diffusion, and cocktail effects improve catalytic performance by synergistic effects, prevent carbon buildup, and maintain stability at high temperatures, enabling efficient methane conversion. These advancements in high entropy materials drive interest in using entropy‐stabilized systems to address the challenges of methane dry reforming. This review summarizes the recent progress in dry reforming of methane and integrating carbon capture followed by dry reforming of methane using high entropy materials.

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Thermal steam methane reforming over bimetal-loaded hemp-derived activated carbon-based catalyst for hydrogen production

et al. 2022

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Cerium-promoted bi-functional hybrid materials made of Ni, Co and hydrotalcite for sorption-enhanced steam methane reforming (SESMR)

Cited by 40 publications

References 51 publications

Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Exploring Dry Reforming of CH₄ to Syngas Using High‐Entropy Materials: A Novel Emerging Approach

Thermal steam methane reforming over bimetal-loaded hemp-derived activated carbon-based catalyst for hydrogen production

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Cerium-promoted bi-functional hybrid materials made of Ni, Co and hydrotalcite for sorption-enhanced steam methane reforming (SESMR)

Cited by 40 publications

References 51 publications

Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Improved Hydrogen Production from Sorption-Enhanced Steam Reforming of Ethanol (SESRE) Using Multifunctional Materials of Cobalt Catalyst and Mg-, Ce-, and Zr-Modified CaO Sorbents

Exploring Dry Reforming of CH4 to Syngas Using High‐Entropy Materials: A Novel Emerging Approach

Thermal steam methane reforming over bimetal-loaded hemp-derived activated carbon-based catalyst for hydrogen production

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Exploring Dry Reforming of CH₄ to Syngas Using High‐Entropy Materials: A Novel Emerging Approach