An adamantane-based COF: stability, adsorption capability, and behaviour as a catalyst and support for Pd and Au for the hydrogenation of nitrostyrene

Trandafir, Mihaela M.; Pop, Lucian Cristian; Hădade, Niculina D.; Florea, Mihaela; Neaţu, Florentina; Teodorescu, Cristian M.; Duraki, Bahir; Bokhoven, Jeroen A. van; Grosu, Ion; Pârvulescu, Vasile I.; Garcı́a, Hermenegildo

doi:10.1039/c6cy01631f

Cited by 28 publications

(35 citation statements)

References 23 publications

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“…They confirm the amorphous nature of the organic polymers (Figure a). The absence of reflection lines of copper species (POP1 support) and of palladium at 2θ 41° (POP2‐POP4 supports) indicates that the small loadings of the remnant Sonogashira catalyst exist only in a highly dispersed state . After the deposition‐precipitation of the noble metals (Figure b,c), the recorded patterns shown that Pt is deposited in a high dispersion (no line, even after the reduction, Figure b), while Pd agglomerated after the reduction in hydrogen (line at 2θ 41°, Figure c).…”

Section: Resultsmentioning

confidence: 99%

“…The stirring was continued for another 2 h, and then the supported solid was washed with distilled water, dried at 80 °C for 2 h under vacuum and at 80 °C overnight. Finally, Pd/POP1‐4 and Pt/POP2 were reduced under a hydrogen flow (30 mL/min) at 200 °C for 3 h. The synthesis of the Pd/C based catalyst was described elsewhere …”

Section: Methodsmentioning

confidence: 99%

“…Except for POP1, synthesized following a copper‐based catalytic process, all other POPs are more active than a previously reported‐adamantane based POP (Table ). These results are the consequence of the presence of residual Pd from the POP synthesis, well incarcerated in the polymer network and able to interact with 4‐NS …”

Section: Catalytic Activitymentioning

confidence: 98%

“…This ensures the intactness of the catalysts during operation. Both the structure and texture of these porous materials can be intimately tailored by the selection of the building units . In this way, these materials may enhance the properties of the carbonaceous supports .…”

Section: Introductionmentioning

confidence: 99%

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Spirobifluorene‐based Porous Organic Polymers as Efficient Porous Supports for Pd and Pt for Selective Hydrogenation

et al. 2018

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Spirobifluorene‐based porous organic polymers (POP) were synthesized following two different protocols; the acetylenic coupling reaction conditions and the Sonogashira cross‐coupling reaction. These were utilized as support for the hydrogenation of a series of species containing unsaturated C=C and C=O bonds (4‐nitrostyrene, 4‐bromobenzophenone, acetophenone, 7‐nitro‐1‐tetralone and 1,2‐naphtoquinone confirmed their efficiency). POP1 prepared via a copper‐catalysis protocol was completely inactive, while POP2‐4 containing residual Pd exhibited different activities in accordance to the accessibility of the substrates to the metal. Further deposition of 0.5 wt% Pd led to active and stable catalysts. They were easily separated by filtration, and after re‐dispersion, afforded the same performances for ten successive cycles. This study also evidenced the specific role of the support in these reactions by comparing the behavior of Pd/POP with that of a Pd/C catalyst with the same loading of palladium. The deposition of Pt on these supports led to sub‐nanometric particles and, in accordance, to a different catalytic behavior reflected merely by differences in the selectivity.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Catalytic Activitymentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

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Spirobifluorene‐based Porous Organic Polymers as Efficient Porous Supports for Pd and Pt for Selective Hydrogenation

et al. 2018

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“…[8][9][10] Especially in catalytic application, COFs are desirable candidate materials. Moreover,t he elegant p skeletons of 2D COFs provide a fundamental basis for structural design.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in Covalent Organic Frameworks for Catalysis

Liu

Wang

2020

Chemistry An Asian Journal

125

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Covalent organic frameworks (COFs) as an emerging type of crystalline porousm aterials, have obtained considerable attention recently.T hey have exhibitedd iverse structure and attractive performance in variousc atalytic reactions. It is highly expected to have as ystematic and comprehensive review summing up COFs-derivedcatalysts in homogeneous and heterogeneous catalysis, which is favorable to the judicious design of an efficient catalystf or targeted reaction. Herein, we focus on summarizing recent and significant developments in COFs materials, with an emphasis on both the synthetic strategies andt argetedf unctionalization, and categorize it in accordance with the different types of catalytic reactions.T heir potential catalysis applications are reviewed thoroughly.M oreover,apersonal view aboutt he future developmento fC OFs catalysts with respect to the large-scale production is also discussed.[ + + ] These authors contributed equally to this work.The ORCID identification number(s) for the author(s) of this articlecan be found under: https://doi.

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Covalent Organic Frameworks in Catalytic Organic Synthesis

Cheng

Wang

2020

Adv Synth Catal

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Covalent organic frameworks (COFs), which are built upon dynamic covalent chemistry (DCC) with various organic building blocks, possess predesignable, highly ordered and crystalline porous structures. These features endow COFs with great potential in the development of function‐tailored materials, particularly in catalytic organic synthesis. Start from selective oxidation reactions early introduced by Ferdi, Thomas and their co‐workers, and then Wang and co‐workers performed Suzuki‐Miyaura reaction through integrating palladium into COFs, increasing numbers of works were established to explore their potentials in the 4.5catalysis of organic reactions. As heterogeneous organic catalysts, COFs bring benefits and solve problems, but also create new obstacles. Hence, we would like to establish a comprehensive system to review some pioneering works in this area. This will help us get a better view so that we can discuss the key and challenging issues we are currently confronted with.

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An adamantane-based COF: stability, adsorption capability, and behaviour as a catalyst and support for Pd and Au for the hydrogenation of nitrostyrene

Abstract: A bimodal (micro/mesoporous) COF was synthesized by coupling tetrakis-1,3,5,7-(4′-iodophenyl)adamantane with 4,4′-diethynylbiphenyl following a Sonogashira protocol.

Cited by 28 publications

References 23 publications

Spirobifluorene‐based Porous Organic Polymers as Efficient Porous Supports for Pd and Pt for Selective Hydrogenation

Spirobifluorene‐based Porous Organic Polymers as Efficient Porous Supports for Pd and Pt for Selective Hydrogenation

Recent Advances in Covalent Organic Frameworks for Catalysis

Covalent Organic Frameworks in Catalytic Organic Synthesis

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