Insight into the properties of stoichiometric, reduced and sulfurized CuO surfaces: Structure sensitivity for H2S adsorption and dissociation

Zhang, Jin; Liu, Miaoqing; Zhang, Riguang; Wang, Qianqian; Huang, Zaixing

doi:10.1016/j.mcat.2017.05.020

Cited by 27 publications

(6 citation statements)

References 42 publications

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“…Representative metal oxides for H 2 S adsorption include iron oxide, − copper oxide, and zinc oxide . For example, Zhang et al studied the H 2 S adsorption and dissociation behavior of the CuO adsorbent by employing density functional theory calculations . It was found that H 2 S interacts with the surface Cu via S atom, while H is adsorbed at the surface O site.…”

Section: Selective Oxidation Of H2smentioning

confidence: 99%

“…39 For example, Zhang et al studied the H 2 S adsorption and dissociation behavior of the CuO adsorbent by employing density functional theory calculations. 40 It was found that H 2 S interacts with the surface Cu via S atom, while H is adsorbed at the surface O site. The dissociative adsorbed H 2 S exists in the form of H and SH species.…”

Section: Selective Oxidation Of H 2 Smentioning

confidence: 99%

See 1 more Smart Citation

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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Hydrogen sulfide (H 2 S) is a notorious and lethal gas widely generated in human economic activities and natural occurrences. The growing demand for pollution control makes it vital for the development of efficient processes to remove and convert H 2 S into high-valued products. As such, diversified technologies have been extensively explored, including H 2 S splitting, selective oxidation of H 2 S, and simultaneous conversion of H 2 S and CO 2 . In this review, the state-of-the-art processes for H 2 S conversion and utilization are reviewed. The potentials of various value-added products from H 2 S utilization, such as H 2 , syngas, COS, CH 3 SH, and other sulfur-containing fine chemicals are elucidated in detail. Notably, the traditional and emerging materials for H 2 S removal, mainly including metal oxide catalysts and carbon-based materials are also overviewed in this review. In addition, the catalytic mechanisms for these desulfurization reactions are also briefly discussed. Lastly, perspectives are given on the viability and technological gaps for each technology and corresponding catalysts.

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Section: Selective Oxidation Of H2smentioning

confidence: 99%

Section: Selective Oxidation Of H 2 Smentioning

confidence: 99%

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Zheng,

Lei,

Wang

et al. 2023

ACS Catal.

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“…The solution absorption methods have problems such as high cost, secondary pollution, corrosion, and high energy consumption for regeneration . In metal oxide catalytic methods, the metal oxidation catalyst is key, which are mainly iron oxide, copper oxide, zinc oxide, and their mixed metal oxide materials. − The metal oxide catalytic method has the disadvantages of easy deactivation and difficult regeneration. Biological methods mainly contain biological scrubber, biological filter, and biological trickling filter.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Straw Porous Biochars by Microwave-Assisted KOH Activation for Removal of Gaseous H₂S

et al. 2021

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Two types of straw porous biochars were prepared from agricultural waste (i.e., rice straw and wheat straw) using microwave-assisted KOH activation to eliminate H2S in the gas phase. Influences of sorption temperatures and KOH/biochar mass ratios on the performance of the adsorbent for H2S removal were studied. Several characterization methods were used to analyze the changes in physical structures and the changes of chemical sorption sites of the samples before/after activation and H2S removal experiment. H2S adsorbing kinetics was explored, and the sorption capacities for gaseous Hg0 of the spent adsorbents were also tested. The results exhibited that the physical structures of straw porous biochars were evidently improved, and the contents of the oxygen-containing functional group were also raised via the activation of microwave-assisted KOH. The largest specific surface areas of rice straw/wheat straw porous biochars are, respectively, up to 1999.96 m2/g (WKRS4) and 877.16 m2/g (WKWS4), resulting in the best performance for eliminating H2S. The equilibrium adsorption capacities of WKRS4/WKWS4 to H2S are 57.91 and 61.47 mg/g, respectively. Both temperature and KOH/biochar mass ratio achieve dual effects on H2S sorption. In the sorption processes of H2S over two types of porous materials, both of the rate-determining steps are the external mass transfers. The deactivated porous biochars after adsorbing H2S showed good capturing capabilities for Hg0 in the gas phase.

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“…Only a few reports have been published on the mechanism of the response of MOX sensors in the absence or at trace levels of oxygen concentrations and these sensors employ mainly n-type metal oxides, such as WO3 and SnO2 [7][8][9][10][11]. Among p-type MOX semiconductors, CuO has received some attention for hydrogen sulfide (H2S) detection in air [12][13][14][15][16]. This gas is one of the highly toxic and flammable gases and is widely needed in industrial processes.…”

Section: Introductionmentioning

confidence: 99%

H₂S Sensing in Dry and Humid H₂ Environment With p-Type CuO Thick-Film Gas Sensors

Urasinska‐Wojcik

Gardner

2018

IEEE Sensors J.

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Insight into the properties of stoichiometric, reduced and sulfurized CuO surfaces: Structure sensitivity for H2S adsorption and dissociation

Cited by 27 publications

References 42 publications

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Preparation of Straw Porous Biochars by Microwave-Assisted KOH Activation for Removal of Gaseous H₂S

H₂S Sensing in Dry and Humid H₂ Environment With p-Type CuO Thick-Film Gas Sensors

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Insight into the properties of stoichiometric, reduced and sulfurized CuO surfaces: Structure sensitivity for H2S adsorption and dissociation

Cited by 27 publications

References 42 publications

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H2S: A Review of Desulfurization Processes and Catalysts

Preparation of Straw Porous Biochars by Microwave-Assisted KOH Activation for Removal of Gaseous H2S

H2S Sensing in Dry and Humid H2 Environment With p-Type CuO Thick-Film Gas Sensors

Contact Info

Product

Resources

About

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Advances in Resources Recovery of H₂S: A Review of Desulfurization Processes and Catalysts

Preparation of Straw Porous Biochars by Microwave-Assisted KOH Activation for Removal of Gaseous H₂S

H₂S Sensing in Dry and Humid H₂ Environment With p-Type CuO Thick-Film Gas Sensors