Selective catalytic hydrogenation of naphthalene to tetralin over a Ni-Mo/Al2O3 catalyst

Su, Xiaoping; An, Pu; Gao, Junwen; Wang, Rucheng; Zhang, Yujuan; Li, Xi; Zhao, Yangkun; Liu, Yongqi; Ma, Xiaoxun; Sun, Ming

doi:10.1016/j.cjche.2020.05.010

Cited by 27 publications

(23 citation statements)

References 46 publications

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“…As shown previously, catalysts based on Ni-Mo sulfides are active both in hydrogenation of aromatic compounds [24][25][26][27] and in the water-gas shift reaction. Such systems are resistant to СО, which allows the hydrogenation to be performed in the СО-water system using hydrogen formed in situ by the reaction of CO with H 2 O.…”

Section: Doi: 101134/s0965544121100078supporting

confidence: 60%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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The feasibility of biphenyl hydrogenation with syngas for hydrogen purification and binding with the aim of its transportation was demonstrated. Specific features of the hydrogenation of biphenyl as a promising organic hydrogen carrier using unsupported Ni–Mo sulfide catalysts were studied. In particular, the influence of temperature, reaction time, presence of water in the system, and Н2/СО gas mixture composition on the substrate conversion and selectivity with respect to products was examined. The highest conversion and the maximal hydrogen uptake are reached at 380°С in 6–8 h. The dispersed catalysts are active in biphenyl hydrogenation at the CO concentration in the Н2/СО gas mixture of up to 50 vol %, and H2O can act in this case as an in situ hydrogen source owing to the occurrence of the water-gas shift reaction.

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Section: Doi: 101134/s0965544121100078supporting

confidence: 60%

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

et al. 2021

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“…For comparison, Su et al recently reported 99.75% TL selectivity achieved at 95.62% NL conversion in hexane medium using 4 wt.%NiO-20 wt.%MoO 3 /Al 2 O 3 catalyst at 200 • C and 6 MPa of hydrogen for 8 h in a batch mode. However, noticeable decrease in NL conversion was observed in the second reaction run that was likely due to the loss of active metals [14].…”

Section: Resultsmentioning

confidence: 96%

“…Preliminarily to NL hydrogenation, the catalyst was reduced in hydrogen flow for 3 h at 300 °C and the size of Pt NPs stabilized within HAP was characterized by Scanning Transmission Electron Hydrogenation of NL is well studied in gas-phase and liquid-phase processes [5,6,9,[12][13][14]. A few studies have reported data on the hydrogenation of aromatics in SC CO 2 [15,16] but, to date, there are no reports on TL catalytic synthesis in SC solvent (i.e., hexane) conditions.…”

Section: Resultsmentioning

confidence: 99%

“…A few studies have reported data on the hydrogenation of aromatics in SC CO 2 [15,16] but, to date, there are no reports on TL catalytic synthesis in SC solvent (i.e., hexane) conditions. The best catalytic systems of NL hydrogenation are based on nanoparticles (NPs) of platinum, palladium, nickel and their combinations with other metals supported on coal, alumina, zinc oxide, and zeolites [6,[9][10][11]14,[16][17][18][19][20][21] allowing integral selectivity with respect to TL in the range of 94-99% at high NL conversions, or transforming TL to DLs under more stringent conditions. Typically, the activity of platinum-containing catalysts to produce TL is in the temperature range of 200-300 • C and pressures of 4-6 MPa.…”

Section: Resultsmentioning

confidence: 99%

“…It is noteworthy that the reaction of TL hydrogenation to DLs usually prevails over TL degradation reactions [5,10,11]. Hydrogenation of NL is well studied in gas-phase and liquid-phase processes [5,6,9,[12][13][14].A few studies have reported data on the hydrogenation of aromatics in SC CO2 [15,16]but, to date, there are no reports on TL catalytic synthesis in SC solvent (i.e., hexane) conditions. The best catalytic systems of NL hydrogenation are based on nanoparticles (NPs) of platinum, palladium, nickel and their combinations with other metals supported on coal, alumina, zinc oxide, and zeolites [6,[9][10][11]14,[16][17][18][19][20][21] allowing integral selectivity with respect to TL in the range of 94-99% at high NL conversions, or transforming TL to DLs under more stringent conditions.…”

Section: Introductionmentioning

confidence: 99%

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New Approach to Synthesis of Tetralin via Naphthalene Hydrogenation in Supercritical Conditions Using Polymer-Stabilized Pt Nanoparticles

et al. 2020

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Supercritical (SC) fluid technologies are well-established methods in modern green chemical synthesis. Using SC fluids as solvents instead of traditional liquids gives benefits of higher diffusivity and lower viscosity, which allows mass transfer intensification and, thus, an increased production rate of chemical transformations. Therefore, a conjugation of heterogeneous catalysis with SC media is a large step toward a green chemistry. Tetralin (TL) is an important hydrogen donor solvent used for biomass liquefaction. In industry, TL is obtained via catalytic hydrogenation of naphthalene (NL). Herein, for the first time we have demonstrated the NL hydrogenation with close to 100% selectivity to TL at almost full conversion in the SC hexane. The observed transformation rates in SC hexane were much higher allowing process intensification. The downstream processes can be also facilitated since hexane after depressurisation can be easily separated from the reaction products via simple rectification. The TL synthesis was studied in a batch reactor at variation of reaction temperature and overall pressure. For the first time for this process, low Pt-loaded (1 wt.%) nanoparticles stabilized within hyper-cross-linked aromatic polymer (HAP) were applied. The Pt/HAP catalyst was stable under reaction conditions (250 °C, 6 MPa) allowing its recovery and reuse.

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Electrochemical Hydrogenation of Organic Compounds: A Sustainable Approach

Jayan,

Thadathil,

Varghese

2023

Asian J Org Chem

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Conventional methods for hydrogenation of organic compounds generally use corrosive catalysts and reagents, along with extreme conditions like high temperatures and pressures. Quenching of corrosive materials does not deter its negative impact on the environment, nor is one safe when it comes to working with high temperature and pressure. Electrochemical hydrogenation has proven to be safe and green since most of the efficient reactions are conducted at ambient pressure and temperature, without or minimizing the use of toxic catalysts and corrosive reagents as compared to conventional methods. This review therefore presents the advances in electrochemical hydrogenation reactions of organic compounds, starting from simple aliphatic compounds to complex polyaromatics and heterocyclic aromatic compounds.

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Selective catalytic hydrogenation of naphthalene to tetralin over a Ni-Mo/Al2O3 catalyst

Cited by 27 publications

References 46 publications

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

Biphenyl Hydrogenation with Syngas for Hydrogen Purification and Transportation: Performance of Dispersed Catalytic Systems Based on Transition Metal Sulfides

New Approach to Synthesis of Tetralin via Naphthalene Hydrogenation in Supercritical Conditions Using Polymer-Stabilized Pt Nanoparticles

Electrochemical Hydrogenation of Organic Compounds: A Sustainable Approach

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