Eco-friendly controllable synthesis of highly dispersed ZIF-8 embedded in porous Al2O3 and its hydrogenation properties after encapsulating Pt nanoparticles

Song, Xiaoyun; Guan, Qingxin; Cheng, Zitao; Li, Wei

doi:10.1016/j.apcatb.2018.01.022

Cited by 30 publications

(14 citation statements)

References 48 publications

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“…[8] The hydrogenation of NAP is a reversible parallel-consecutive reaction mainly affording tetralin and decalin (cis-and trans-isomers). [9] Notably, the latter product is much more difficult to obtain than the former because of the reversibility of the consecutive reaction and the difficulty of dearomatizing the stable aromatic ring in tetralin. [5,10] Decalin is a high-added-value organic solvent with a strong ability to dissolve ultrahigh-molecular-weight polyethylene at low temperatures and is widely used as a fuel, raw material for nylon and softener production, hydrogen storage medium, etc.…”

mentioning

confidence: 99%

Selective Hydrogenation of Naphthalene to Decalin Over Surface‐Engineered α‐MoC Based on Synergy between Pd Doping and Mo Vacancy Generation

Liu

Chen

et al. 2022

Adv Funct Materials

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Although the hydrogenation of aromatics is important for the processing of fossil fuels and biofuels, it typically requires costly (e.g., noble metal‐based) catalysts and exhibits unsatisfactory selectivity. Herein, flake‐like nanocrystalline molybdenum carbide (α‐MoC) is surface‐engineered via Pd doping, and the synergy between the in‐situ generated Mo vacancies and doped Pd species is shown to promote the selective hydrogenation of naphthalene to decalin. Experimental and theoretical evidence reveal that this enhanced performance is due to the optimization of naphthalene adsorption energy and the establishment of a unique surface structure due to (i) surface environment modulation, (ii) the adjustment of electron density around Mo atoms, and (iii) the change in the strength of Mo‐H bonding caused by d‐band center optimization. Benefiting from the unique surface structure, the obtained optimum 0.5% Pd‐α‐MoC catalyst exhibits excellent performance. The developed strategy is successfully used to fabricate other noble metal (Pt, Ru)‐doped α‐MoC catalysts, thus holding promise as a universal method for the rational design of high‐performance metal carbide‐based hydrogenation catalysts.

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mentioning

confidence: 99%

Selective Hydrogenation of Naphthalene to Decalin Over Surface‐Engineered α‐MoC Based on Synergy between Pd Doping and Mo Vacancy Generation

Liu

Chen

et al. 2022

Adv Funct Materials

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“…The catalytic performance of Ni@MCM‐x was evaluated by the hydrogenation of naphthalene. The hydrogenation process is illustrated in Figure , and the structure models of reactants molecules optimized by DFT method are shown in Figure S3. The main product is fully saturated decalin and the by‐product is partially hydrogenated tetralin.…”

Section: Resultsmentioning

confidence: 99%

Facile in situ Encapsulation of Highly Dispersed Ni@MCM‐41 for the Trans‐Decalin Production from Hydrogenation of Naphthalene at Low Temperature

et al. 2019

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Ni@MCM‐41 catalyst that has uniformly distributed, highly dispersed Ni nanoparticles (about 2.3 nm) was designed and successfully synthesized by in situ encapsulation of Ni in the channels of MCM‐41. This catalyst exhibits excellent thermal stability and hydrogenation activity. Water insoluble nickel acetylacetonate (Ni(acac)2) was first dissolved aqueous solution of cetyltrimethyl ammonium bromide (CTAB) and encapsulated in micelles of CTAB. Sodium silicate was used as a silicon source to rapidly hydrolyze and then wrap on the micelle surface to synthesize the MCM‐41 zeolite. The MCM‐41 zeolite encapsulating Ni(acac)2 was synthesized within a short time (4 h) at 120 °C. Compared with conventional supported catalysts, thus 3 wt.% Ni@MCM‐41 has ultra‐small uniformly distributed Ni nanoparticles and exhibits improved activity for the hydrogenation of naphthalene to decalin at very low reaction temperatures. The TOF and the apparent activation energy of Ni@MCM‐41 and the conventional catalysts (Ni/MCM‐41 and Pt/MCM‐41) were evaluated and compared. And the catalysis mechanism was analyzed. Furthermore, this Ni@MCM‐41 catalyst offers an additional advantage of selectivity in decalin isomerization; 92 % trans‐decalin selectivity was achieved at a wide temperature range.

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“…Therefore, research on the catalytic hydrogenation of biomass-derived esters to produce alcohols has attracted more and more attention. As shown in Figure 8, Li et al 100 synthesized ZIF-8@Al 2 O 3 mesoporous and microporous composites by a solvent-free method, and then, Pt was loaded on ZIF-8@Al 2 O 3 by the incipient wetness impregnation method. The composite was denoted as ZA-n (ZIF-8@ Al 2 O 3 , where n represents different mass percents of Al 2 O 3 ).…”

Section: ■ Application Of Mof Materials In Catalyticmentioning

confidence: 99%

Application of Metal–Organic Framework Materials and Derived Porous Carbon Materials in Catalytic Hydrogenation

Shen

et al. 2020

ACS Sustainable Chem. Eng.

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In the past few decades, metal–organic frameworks (MOFs) have gradually become attractive materials in various fields due to their unique properties (adjustable pore size, large specific surface area, highly ordered structure, uniformly distributed metal nodes, good modifiability). MOF-derived porous carbon materials have also attracted great interest in many application fields due to their adjustable chemical and physical properties. The hydrogenation reaction is an important type of reaction in the chemical industry. The catalysts play an important role in the hydrogenation reaction. In recent years, MOFs and derived porous carbon materials have had extensive application in catalytic hydrogenation reactions. Compared with other traditional catalysts, MOFs and derived porous carbon materials have some unique advantages as hydrogenation catalysts, which are described in this review. In addition, we have expounded the rational design of MOF hydrogenation catalysts from the following four aspects: choosing suitable MOFs with coordinated unsaturated metal sites, good stability, and precise control and optimizing the structure of MOF materials and hydrogen storage characteristics of MOF materials. The application of nitrogen-doped carbon materials and MOF-derived porous carbon materials in hydrogenation reactions has also been compared. Moreover, various MOFs and derived porous carbon materials with excellent performance are discussed in detail in various catalytic hydrogenation reactions including olefins, alkynes, alcohols and phenols, aldehydes, carboxylic acids, esters, nitro compounds, and other hydrogenation reactions. Finally, the challenges of MOFs and derived porous carbon materials as hydrogenation catalysts are objectively summarized, and the application and development trends in catalytic hydrogenation reactions are prospected.

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Eco-friendly controllable synthesis of highly dispersed ZIF-8 embedded in porous Al2O3 and its hydrogenation properties after encapsulating Pt nanoparticles

Cited by 30 publications

References 48 publications

Selective Hydrogenation of Naphthalene to Decalin Over Surface‐Engineered α‐MoC Based on Synergy between Pd Doping and Mo Vacancy Generation

Selective Hydrogenation of Naphthalene to Decalin Over Surface‐Engineered α‐MoC Based on Synergy between Pd Doping and Mo Vacancy Generation

Facile in situ Encapsulation of Highly Dispersed Ni@MCM‐41 for the Trans‐Decalin Production from Hydrogenation of Naphthalene at Low Temperature

Application of Metal–Organic Framework Materials and Derived Porous Carbon Materials in Catalytic Hydrogenation

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