Hydrogen production by water-gas shift reaction over Co-promoted MoS2/Al2O3 catalyst: The intrinsic activities of Co-promoted and unprompted sites

Chen, Jianjun; Zhang, Jincheng; Mi, Jinxing; Garcia, Elizabeth Dominguez; Cao, Yanning; Jiang, Lilong; Oliviero, Laetitia; Maugé, Françoise

doi:10.1016/j.ijhydene.2018.02.194

Cited by 12 publications

(6 citation statements)

References 42 publications

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“…Recently, Alamolhoda et al worked on understanding the synergetic effect between nickel and cerium as catalysts in WGS reaction, and reported the use of low percentage loading (0-3 wt%) of cerium and nickel as dispersed phases on MFI framework [102]. According to the results, the cerium only catalysts had shown no sign of reaction, whereas the single metal Ni-MFI series catalysts successfully activated the CO.…”

Section: Transition Metal Catalystsmentioning

confidence: 99%

“…The prepared Ni-Ce-MFI succession had together speeded up the WGSR even at a low temperature of 503 K, and in some cases, the equilibrium conversion was achieved at temperatures less than 548 K. The presence of ceria is believed to provide the oxygen required for promoting nickel activity, which was clear from the TPR profile requiring lower temperature for nickel reduction in Ni-Ce-MFI catalysts. The lowest reduction temperature was observed when Ni and Ce were present in equal weight percentages [102]. Iriarte-Velasco et al used calcined pork bone, composed mainly of hydroxyapatite (HAp), as support for transition metals for WGSR [103].…”

Section: Transition Metal Catalystsmentioning

confidence: 99%

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A review of recent advances in water-gas shift catalysis for hydrogen production

2020

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The water-gas shift reaction (WGSR) is an intermediate reaction in hydrocarbon reforming processes, considered one of the most important reactions for hydrogen production. Here, water and carbon monoxide molecules react to generate hydrogen and carbon dioxide. From the thermodynamics aspect, pressure does not have an impact, whereas low-temperature conditions are suitable for high hydrogen selectivity because of the exothermic nature of the WGSR reaction. The performance of this reaction can be greatly enhanced in the presence of suitable catalysts. The WGSR has been widely studied due do the industrial significance resulting in a good volume of open literature on reactor design and catalyst development. A number of review articles are also available on the fundamental aspects of the reaction, including thermodynamic analysis, reaction condition optimization, catalyst design, and deactivation studies. Over the past few decades, there has been an exceptional development of the catalyst characterization techniques such as near-ambient x-ray photoelectron spectroscopy (NA-XPS) and in situ transmission electron microscopy (in situ TEM), providing atomic level information in presence of gases at elevated temperatures. These tools have been crucial in providing nanoscale structural details and the dynamic changes during reaction conditions, which were not available before. The present review is an attempt to gather the recent progress, particularly in the past decade, on the catalysts for lowtemperature WGSR and their structural properties, leading to new insights that can be used in the future for effective catalyst design. For the ease of reading, the article is divided into subsections based on metals (noble and transition metal), oxide supports, and carbon-based supports. It also aims at providing a brief overview of the reaction conditions by including a table of catalysts with synthesis methods, reaction conditions, and key observations for a quick reference. Based on our study of literature on noble metal catalysts, atomic Pt substituted Mn 3 O 4 shows almost full CO conversion at 260°C itself with zero methane formation. In the case of transition metals group, the inclusion of Cu in catalytic system seems to influence the CO conversion significantly, and in some cases, with CO conversion improvement by 65% at 280°C. Moreover, mesoporous ceria as a catalyst support shows great potential with reports of full CO conversion at a low temperature of 175°C.

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Section: Transition Metal Catalystsmentioning

confidence: 99%

Section: Transition Metal Catalystsmentioning

confidence: 99%

A review of recent advances in water-gas shift catalysis for hydrogen production

2020

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“…For instance, MoS 2 shows a WGS conversion rate of 3 × 10 17 molecules per cm 2 per s at 733 K in the presence of 2500 ppm H 2 S, which compares most favorably with the rates obtained with chromia-alumina and iron oxidechromia catalysts. 17 The performance of MoS 2 catalysts can be further enhanced by doping 3d transition metals in highly sulfided feeds at 575-675 K. 18 MoS 2 edges are generally believed to be the active sites for a number of catalytic reactions, while the (001) basal plane with the largest site density is generally inert. [6][7][8][9][10][11][12][13][14][15] To capitalize on the site abundance, numerous studies have been devoted to modify the basal plane by creating S vacancies or doping specific transition metals (M).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synergistic effect and coordination environment tuned water-gas shift reaction on MoS₂ catalyst

Su,

Liao,

Sun

2024

Catal. Sci. Technol.

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“…Since the intrinsic activities of the active sites can be tuned by modulating the electronic structure, it is highly desirable for designing efficient catalysts for WGSR by introducing transition metals into MoS 2 to replace Mo without sacrificing the sulfur sites. However, to our knowledge, there are only a few reports about using doped MoS 2 for WGSR, let alone the systemic study of electronic modulating in MoS 2 for WGSR …”

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confidence: 99%

Transition Metal‐Doped Edge‐Terminated MoS₂ Superstructures as Efficient Catalysts for H₂ Production

Ding

Shao

Bai

et al. 2018

Adv Materials Inter

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As the most important layered transition metal dichalcogenide, molybdenum disulfide (MoS2) is applicable for simultaneous H2 production and CO elimination by water‐gas shift reaction (WGSR), while its performance is still not satisfactory. To further promote the catalytic activities of MoS2, herein a series of transition metals (M = Mn, Fe, Co, Ni, Cu, and Zn) into the column‐like superstructures with edge‐terminated MoS2 nanosheet building blocks (termed as M‐ET MoS2 SSs) is doped as the efficient catalysts for WGSR. A precise M doping into ET MoS2 SSs reveals that the M‐ET MoS2 SSs exhibit the volcano‐like activity toward WGSR as a function of specific M with the 5%Ni‐ET MoS2 SSs displaying the best average rate of 50.48 µmolH2 gcat. −1 s−1 in WGSR at 473 K, which is 4 and 13 times higher than those of the ET MoS2 SSs and commercial MoS2, respectively, and is even comparable to many noble‐metal‐based catalysts. The valence band spectra reveal that the boosted WGSR activity of 5%Ni‐ET MoS2 SSs can be ascribed to the downshift of the d‐band center relative to the Fermi level, which facilitates the H desorption to produce H2 in WGSR, showing a highly efficient and earth‐abundant catalysts for WGSR and beyond.

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Hydrogen production by water-gas shift reaction over Co-promoted MoS2/Al2O3 catalyst: The intrinsic activities of Co-promoted and unprompted sites

Cited by 12 publications

References 42 publications

A review of recent advances in water-gas shift catalysis for hydrogen production

A review of recent advances in water-gas shift catalysis for hydrogen production

Synergistic effect and coordination environment tuned water-gas shift reaction on MoS₂ catalyst

Transition Metal‐Doped Edge‐Terminated MoS₂ Superstructures as Efficient Catalysts for H₂ Production

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Hydrogen production by water-gas shift reaction over Co-promoted MoS2/Al2O3 catalyst: The intrinsic activities of Co-promoted and unprompted sites

Cited by 12 publications

References 42 publications

A review of recent advances in water-gas shift catalysis for hydrogen production

A review of recent advances in water-gas shift catalysis for hydrogen production

Synergistic effect and coordination environment tuned water-gas shift reaction on MoS2 catalyst

Transition Metal‐Doped Edge‐Terminated MoS2 Superstructures as Efficient Catalysts for H2 Production

Contact Info

Product

Resources

About

Synergistic effect and coordination environment tuned water-gas shift reaction on MoS₂ catalyst

Transition Metal‐Doped Edge‐Terminated MoS₂ Superstructures as Efficient Catalysts for H₂ Production