Effect of the preparation method on particle size and reaction selectivity on naphthalene hydrogenation over Ni/H-MOR catalysts

Cuevas-García, R.; Téllez-Romero, J.G.; Ramı́rez, Jorge; Sarabia-Bañuelos, P.; Puente-Lee, Iván; Salcedo-Luna, Cecilia; Hernández-González, S.; Nolasco-Arizmendi, V. A.

doi:10.1016/j.cattod.2019.08.044

Cited by 16 publications

(10 citation statements)

References 40 publications

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“…For example, the straight-chain alkanes octane, nonane, decane, dodecane, tetradecane, hexadecane, octadecane, and nonadecane have AITs of 220, 206, 208, 204, 202, 202, 235, and 230 • C, respectively [33]. These AIT values are lower compared to those reported for the benzene derivatives ethylbenzene, propylbenzene, and naphthalene with AIT values of 432, 456, and 526 • C, respectively [33,40,41]. Additionally, it has been reported that branching helps to stabilize the molecule, increasing the AIT.…”

Section: Discussionmentioning

confidence: 79%

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Achimón

Brito

Pizzolitto

et al. 2022

JoF

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The aim of the present study was to evaluate the effect of different carbon sources on the hydrocarbon-like volatile organic compounds (VOCs) of Fusarium verticillioides strain 7600 through a Principal Component Analysis approach, and to explore their diesel potential by using data from the literature. The fungus was cultivated in GYAM culture medium, and five carbon sources were evaluated: glucose, sucrose, xylose, lactose, and fructose. The VOCs were collected using a close-loop apparatus and identified through GC-MS. The same profile of 81 VOCs was detected with all treatments, but with different relative percentages among carbon sources. The production of branched-chain alkanes (30 compounds) ranged from 25.80% to 38.64%, straight-chain alkanes (12 compounds) from 22.04% to 24.18%, benzene derivatives (12 compounds) from 7.48% to 35.58%, and the biosynthesis of branched-chain alcohols (11 compounds) was from 6.82% to 16.71%, with lower values for the remaining groups of VOCs. Our results show that F. verticillioides has the metabolic potential to synthesize diesel-like VOCs. Further research should include the optimization of culture conditions other than carbon sources to increase the production of certain groups of VOCs.

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Section: Discussionmentioning

confidence: 79%

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Achimón

Brito

Pizzolitto

et al. 2022

JoF

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“…Other Ni-based catalysts were prepared by DPU, such as Ni/ zeolite [31] and Ni/g-Al 2 O 3 [47,70]. Tab.…”

Section: Preparation Of Ninps-based Catalysts By Dpumentioning

confidence: 99%

“…The influence of these parameters on the nature of the deposit obtained is discussed in the following. However, the DPU was used to prepare materials based on different metals, e. g., gold nanoparticles (AuNPs) [1,2,4,6,[13][14][15][16][17][18][19][20][21], silver nanoparticles (AgNPs) [6,7,22], platinum nanoparticles (PtNPs) [6], iron nanoparticles (FeNPs) [23], copper nanoparticles (CuNPs) [3,12,18,[24][25][26][27][28][29][30], nickel nanoparticles (NiNPs) [5,[31][32][33][34][35][36][37], cobalt nanoparticles (CoNPs) [38][39][40][41], ruthenium nanoparticles (RuNPs) [13,42], and others. The supports used have different natures: simple oxides (TiO 2 [3,4,7,13,14,…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

2022

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The main works carried out on precipitation deposition with urea (DPU) are summarized. This method is widely applied and considered as excellent for the preparation of catalysts. It proved to be the optimum technique, e.g., in view of deposition yield, total reduced particle size, high particle distribution, and metal‐support interaction. The influence of several parameters on the DPU process, such as the effect of temperature during deposition, maturation time, annealing manner of the final powder, metal and the urea concentrations and others, are discussed. The main steps of the DPU, the preparation of monometallic catalysts by this variant, and the bimetallic catalysts obtained by co‐deposition precipitation with urea (CO‐DPU) are described.

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“…On the whole, considerable progress has been made in the methylation of 2-MN (or NA) with methanol based on zeolite catalysts. However, the reported data such as 2,6-DMN yield, catalytic stability, etc. − are still not high enough up to now. Moreover, trimethylbenzene (especially expensive 1,3,5-trimethylbenzene) is commonly employed as the reaction solvent, and this also increases the synthesis cost.…”

Section: Introductionmentioning

confidence: 95%

Transalkylation of C₁₀ Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over a Shape-Selective SiO₂–Ni–H-Mordenite with Nanosheet Crystal

Xie

Liang

Zhou

et al. 2021

Ind. Eng. Chem. Res.

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A reasonable control of the reaction pathways in the reaction system of the transalkylation of C 10 aromatics with 2methylnaphthalene was achieved over a shape-selective SiO 2 (II)− 3.0%Ni−H-mordenite (HMOR) with nanosheet crystals in a H 2 atmosphere. First, significantly improved reactivity was obtained depending on the synergistic catalysis from acid sites and metal Ni sites only on the internal surface, maybe due to a process where spillover hydrogen was converted into active hydrogen species and the latter greatly enhanced the proton-transfer efficiency in this surface catalysis. Second, based on the external surface passivation with little influence on the intrinsic excellent pore diffusibility of lamellar crystals, the side reactions of naphthalene nucleus ring opening and methylnaphthalene polyalkylation involved in largemolecule intermediates were significantly suppressed by the shape-selectivity restriction inside channels, meanwhile with remarkably enhanced dimethylnaphthalene selectivity. Both porous shape selectivity and a reasonably decreased acid strength also weakened the secondary conversion of β,β-dimethylnaphthalenes into other isomers. Therefore, an obviously improved selectivity of 2,6dimethylnaphthalene was gained. Also, a reasonable hydrogenation catalyzed by metal Ni sites strongly resisted coke deposition, and this created a good catalytic stability of this catalyst with an impressive capability of accommodating coke. As a result, a 2methylnaphthalene conversion of above 67.1% and a 2,6-dimethylnaphthalene yield of above 10.7% were obtained during a 100 h on stream reaction.

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Effect of the preparation method on particle size and reaction selectivity on naphthalene hydrogenation over Ni/H-MOR catalysts

Cited by 16 publications

References 40 publications

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

Transalkylation of C₁₀ Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over a Shape-Selective SiO₂–Ni–H-Mordenite with Nanosheet Crystal

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Effect of the preparation method on particle size and reaction selectivity on naphthalene hydrogenation over Ni/H-MOR catalysts

Cited by 16 publications

References 40 publications

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Effect of Carbon Sources on the Production of Volatile Organic Compounds by Fusarium verticillioides

Preparation of Nanocatalysts Using Deposition Precipitation with Urea: Mechanism, Advantages and Results

Transalkylation of C10 Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over a Shape-Selective SiO2–Ni–H-Mordenite with Nanosheet Crystal

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Product

Resources

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Transalkylation of C₁₀ Aromatics with 2-Methylnaphthalene for 2,6-Dimethylnaphthalene Synthesis over a Shape-Selective SiO₂–Ni–H-Mordenite with Nanosheet Crystal