Hydrogenation of 2-methylnaphthalene over bi-functional Ni catalysts

Kline, Matthew; Karunarathne, Sampath A.; Schwartz, Thomas J.; Wheeler, M. Clayton

doi:10.1016/j.apcata.2021.118462

Cited by 10 publications

(11 citation statements)

References 50 publications

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“… a Measured by a multipoint BET method. b Calculated at a relative pressure of P / P 0 = 0.99. c Measured from the average sizes. − d Calculated at naphthalene conversion <25%. e SSA: specific surface area; V p : total pore volume; M : metal loading (ICP-MS); D : dispersion; d : average particle size (TEM); D ave : average pore diameter; TOF: turnover frequency. …”

Section: Resultsmentioning

confidence: 99%

Selective Hydrogenation of Naphthalene to Produce Tetralin over a Ni/S950 Catalyst under Mild Conditions

Zhang

Cao

Zhao

et al. 2023

Ind. Eng. Chem. Res.

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Tetralin is an essential chemical that can be generated by the partial hydrogenation of naphthalene. However, it is a challenge to design a catalyst with high efficiency, low-temperature activity, high tetralin selectivity, and a low cost to produce tetralin. A Ni/S950 catalyst with well-dispersed metal particles and high catalytic activity was prepared with an ion-exchange method. A complete conversion of naphthalene and a high tetralin yield of 95.6% were achieved over the Ni/S950 catalyst under 200 °C, 2 h, and 2 MPa H 2 . Compared with Co/S950 and Cu/S950, both the hydrogenation activity and the selectivity of tetralin over Ni/S950 are much higher due to its welldispersed Ni particles with a smaller particle size of 6.8 nm and numerous active Ni 0 sites.

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Section: Resultsmentioning

confidence: 99%

Selective Hydrogenation of Naphthalene to Produce Tetralin over a Ni/S950 Catalyst under Mild Conditions

Zhang

Cao

Zhao

et al. 2023

Ind. Eng. Chem. Res.

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“…Decalin ring-opening reactions were carried out in a high-pressure, stainless steel trickle-bed reactor. A schematic of the down-flow reactor can be found elsewhere . Before each reaction, the catalyst was packed between plugs of inert SiO 2 (Fisher, sea sand) and quartz wool to aid in liquid distribution and reduce void volume in the reactor.…”

Section: Methodsmentioning

confidence: 99%

“…A schematic of the down-flow reactor can be found elsewhere. 7 Before each reaction, the catalyst was packed between plugs of inert SiO 2 (Fisher, sea sand) and quartz wool to aid in liquid distribution and reduce void volume in the reactor. Reactions were carried out using 150 mg of catalyst at 250 to 350 °C, 1.7 MPa of H 2 , and a H 2 :decalin ratio of 30:1 (mol:mol).…”

Section: ■ Experimental Sectionmentioning

confidence: 99%

“…3−6 In a recent work, we synthesized metallic Ni catalysts for the hydrogenation of biomass-derived TDO oil. 7 The results showed that hydrogenation alone was insufficient to increase the cetane number above the specifications for no. 2 distillate, as per ASTM D613.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Hydrogenation of aromatics followed by selective ring opening is an appealing process to produce liquid transportation fuels ( i . e ., diesel, jet fuel) from biomass-derived feedstocks. − One such feedstock is produced by thermal deoxygenation (TDO), which is a process to convert organic acids from cellulose hydrolyzate into a low-oxygen bio-oil containing large amounts of substituted naphthalene compounds. − In a recent work, we synthesized metallic Ni catalysts for the hydrogenation of biomass-derived TDO oil . The results showed that hydrogenation alone was insufficient to increase the cetane number above the specifications for no.…”

Section: Introductionmentioning

confidence: 99%

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Production of High-Cetane Fuel Blendstocks by Ir-Catalyzed Ring Opening of Decalin

Kline

Karunarathne

Schwartz

et al. 2022

ACS Sustainable Chem. Eng.

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Selective ring opening of bicyclic molecules is an attractive process for producing diesel and jet fuels because ring-opened products can lead to enhanced properties such as cetane number, specific gravity, and hydrogen content. In this work, we sought to design efficient decalin ring-opening catalysts that achieved high turnover frequencies and high product cetane numbers. Six Ir catalysts were characterized using ICP-OES, H2 chemisorption, NH3-TPD, and XRD and were tested in a down-flow trickle-bed reactor to study decalin ring opening. Products were analyzed by GC-MS and categorized using selected ion monitoring, while linear combinations of individual cetane numbers were used to determine estimated product cetane numbers. Ir/1xCsBEA yielded the highest ring opening product selectivity (82%), but Ir/SiO2 led to the highest turnover frequency (5.7 ks–1) and produced the highest product cetane number (38). We attribute this high turnover frequency to large Ir nanoparticles and an abundance of terrace sites, while the high cetane number is due to a lack of isomerization on Brønsted acid sites. This research demonstrates that supported Ir catalysts can be useful for upgrading bicyclic molecules, such as those found in hydrotreated bio-oils.

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Selective Deep Hydrogenation of Acenaphthene to High‐Density Fuel On Supported Ru Catalysts: The Role of Strong Metal‐Support Interaction

Guo,

Niu,

Liu

et al. 2024

ChemNanoMat

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Developing high‐performance aviation fuel is highly desired for the rapid development of supersonic aircraft. Herein, selective deep hydrogenation of polycyclic aromatics to a high‐density fuel is developed over a Ru‐based catalyst. The influences of strong Ru‐support interaction on tailoring the reaction pathways of acenaphthene hydrogenation were investigated using different oxide supports (SiO2, CeO2, TiO2). Ru/CeO2 and Ru/TiO2 with strong SMSI possess abundant electron‐deficient Ruδ+ species which exhibit a good ability to promote H2 dissociation and increase the isomerization rate of saturated aromatic compounds. Due to the enhanced adsorption of aromatic molecules, Ru/CeO2 (1.30 μmol·min‐1·g‐1) exhibits superior catalytic activity in comparison to Ru/TiO2 (1.25 μmol·min‐1·g‐1) during acenaphthene hydrosaturation, while Ru/TiO2 exhibits the highest isomerization reaction rate (7.60 × 10‐2 μmol·min‐1·g‐1) because of its excellent hydrogen spillover ability and high content of Ruδ+ species. The best catalytic activity with 96% selectivity of ccc‐perhydroacenaphthene was achieved on Ru/TiO2, and an isomerization mechanism of perhydroacenaphthene isomers was proposed.

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Hydrogenation of 2-methylnaphthalene over bi-functional Ni catalysts

Cited by 10 publications

References 50 publications

Selective Hydrogenation of Naphthalene to Produce Tetralin over a Ni/S950 Catalyst under Mild Conditions

Selective Hydrogenation of Naphthalene to Produce Tetralin over a Ni/S950 Catalyst under Mild Conditions

Production of High-Cetane Fuel Blendstocks by Ir-Catalyzed Ring Opening of Decalin

Selective Deep Hydrogenation of Acenaphthene to High‐Density Fuel On Supported Ru Catalysts: The Role of Strong Metal‐Support Interaction

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