Treatment of municipal sludge by hydrothermal oxidation process with H2O2

Zhang, Yifan; Zhang, Shouyu; Li, Hao; Wang, Caiwei; Jiang, Fenghao; Lyu, Junfu

doi:10.1016/j.chemosphere.2020.127140

Cited by 21 publications

(6 citation statements)

References 21 publications

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“…Most hydrocarbons in bio-oil come from the deacidification of fatty acids and the chain formation of aromatic substances. 36 In this study, it was found that olefins were the only hydrocarbons formed in bio-oil when the reaction was performed without adding the catalyst, while hydrocarbons formed in the bio-oil after adding the catalyst included not only olefins but also alkanes. In our previous study, we found that 5,7,13,15-tetramethyl-2-tetradecane only appeared in the ethanol–water reaction system, but not in the pure water reaction system.…”

Section: Resultsmentioning

confidence: 79%

Study on the hydrothermal liquefaction of antibiotic residues with molecular sieve catalysts in the ethanol–water system: focus on product distribution and characterization

et al. 2021

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Section: Resultsmentioning

confidence: 79%

Study on the hydrothermal liquefaction of antibiotic residues with molecular sieve catalysts in the ethanol–water system: focus on product distribution and characterization

et al. 2021

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“…The approach is easy to implement and need not be performed under dangerous conditions of high temperature or high pressure, which is believed to be a feasible solution for industrial applications. Specifically, the product of this method is water, without pollution, thus reducing the pressure on the environment . Also, the experiment can be repeated many times and the catalytic performance can still be recovered, so the method has direct application to make it possible to recycle the catalyst for prolonging the use time and reducing the amounts of catalysts required for the same reaction process, with the consequence of greatly reducing industrial costs.…”

Section: Results and Discussionmentioning

confidence: 99%

Non-Negligible Oxygen Atoms in Transition Metal Phosphides: Research on the Role of Oxygen in Hydrodechlorination

et al. 2021

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Environmental pressure gives potential for the application of transition metal phosphides (TMPs), which serve as efficient degradation catalysts. Although various efforts are advocated to obtain high activity, it is still difficult for phosphides to exhibit cycle performance in hydrodechlorination (HDC), limiting their practical development. By linking the changes in the oxidation state of MoP before and after HDC with its catalytic performance, the Mo−P−O bond is found to be the active catalytic site, not only promoting electron transfer but also forming the defect-rich structure. Based on this, H 2 O 2 -treated MoP after HDC reached a performance of 19.9%, and the activity could be restored after multiple cycle reactions, while the untreated one still had poor performance, demonstrating that carrying out the H 2 O 2 treatment process can realize the recycling of MoP, which is of importance for industrial application of catalysts.

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“…Furthermore, Fei et al reported a facile hydrothermal process assisted by H 2 O 2 for fabricating an atomically distributed transition metal integrated into nitrogen-doped graphene, denoted as M-NHGFs, for a heterogeneous tunable electrochemical SAC . Adding H 2 O 2 aqueous solution into graphene oxide during hydrothermal treatment, which is called the oxidative-etching process, led to the graphene having porous in-plane holes which can improve mass transport activity via rich defective sites. , Additionally, to prevent aggregation of the metal site of multicomponent SACs and improve the intrinsic activity, the hydrothermal method was a rational synthetic method to manifest the synergistic effects of different neighboring single-atom elements. For example, Yang et al introduced controllable oxygen coordinated tungsten–molybdenum anchored in N-doped graphene through a facile two-step hydrothermal method for a HER catalyst having a remarkable stability in terms of strong covalent interactions between W–Mo dual atoms and N-doped graphene, which can bring an unexpected synergetic effect .…”

Section: General Synthesis Methods For Sacsmentioning

confidence: 99%

Toward Multicomponent Single-Atom Catalysis for Efficient Electrochemical Energy Conversion

et al. 2021

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Single-atom catalysts (SACs) have recently emerged as the ultimate solution for overcoming the limitations of traditional catalysts by bridging the gap between homogeneous and heterogeneous catalysts. Atomically dispersed identical active sites enable a maximal atom utilization efficiency, high activity, and selectivity toward the wide range of electrochemical reactions, superior structural robustness, and stability over nanoparticles due to strong atomic covalent bonding with supports. Mononuclear active sites of SACs can be further adjusted by engineering with multicomponent elements, such as introducing dual-metal active sites or additional neighbor atoms, and SACs can be regarded as multicomponent SACs if the surroundings of the active sites or the active sites themselves consist of multiple atomic elements. Multicomponent engineering offers an increased combinational diversity in SACs and unprecedented routes to exceed the theoretical catalytic performance limitations imposed by single-component scaling relationships for adsorption and transition state energies of reactions. The precisely designed structures of multicomponent SACs are expected to be responsible for the synergistic optimization of the overall electrocatalytic performance by beneficially modulating the electronic structure, the nature of orbital filling, the binding energy of reaction intermediates, the reaction pathways, and the local structural transformations. This Review demonstrates these synergistic effects of multicomponent SACs by highlighting representative breakthroughs on electrochemical conversion reactions, which might mitigate the global energy crisis of high dependency on fossil fuels. General synthesis methods and characterization techniques for SACs are also introduced. Then, the perspective on challenges and future directions in the research of SACs is briefly summarized. We believe that careful tailoring of multicomponent active sites is one of the most promising approaches to unleash the full potential of SACs and reach the superior catalytic activity, selectivity, and stability at the same time, which makes SACs promising candidates for electrocatalysts in various energy conversion reactions.

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Treatment of municipal sludge by hydrothermal oxidation process with H2O2

Cited by 21 publications

References 21 publications

Study on the hydrothermal liquefaction of antibiotic residues with molecular sieve catalysts in the ethanol–water system: focus on product distribution and characterization

Study on the hydrothermal liquefaction of antibiotic residues with molecular sieve catalysts in the ethanol–water system: focus on product distribution and characterization

Non-Negligible Oxygen Atoms in Transition Metal Phosphides: Research on the Role of Oxygen in Hydrodechlorination

Toward Multicomponent Single-Atom Catalysis for Efficient Electrochemical Energy Conversion

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