A carboxylic acid functionalized SBA-15 supported Pd nanocatalyst: an efficient catalyst for hydrogenation of nitrobenzene to aniline in water

Ganji, Saidulu; Bukya, Padma; Liu, Zhao‐Tie; Rao, K. Srinivasa; Burri, David Raju

doi:10.1039/c9nj01743g

Cited by 16 publications

(8 citation statements)

References 67 publications

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“…Therefore, a controllable synthesis of highly reactive and stable metal–metal oxide hybrid nanocatalysts is necessary. On the other hand, relative to Al 2 O 3 and SiO 2 , ordered mesoporous materials, such as SBA-15, , MCM-41, and KIT-6, were widely employed as a catalyst support to obtain highly dispersed and structurally stable nanocatalysts due to their thermal stability, large surface area, larger pore size, and uniform mesoporous channels …”

Section: Introductionmentioning

confidence: 99%

“…23 Therefore, a controllable synthesis of highly reactive and stable metal−metal oxide hybrid nanocatalysts is necessary. On the other hand, relative to Al 2 O 3 and SiO 2 , ordered mesoporous materials, such as SBA-15, 25,26 MCM-41, 27 and KIT-6, 28 were widely employed as a catalyst support to obtain highly dispersed and structurally stable nanocatalysts due to their thermal stability, large surface area, larger pore size, and uniform mesoporous channels. 29 Based on the above description, to achieve a good catalyst with desirable activity, selectivity, and stability in the hydrogenation of substituted nitroaromatics, here, we attempted to embed Ir-MO x (M = Fe, Co, and Ni) hybrid nanostructures into the mesopores of SBA-15, which have been widely used to confine metal NPs.…”

Section: Introductionmentioning

confidence: 99%

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Transition Metal Oxide-Modified Ir Nanoparticles Supported on SBA-15 Silica for Selective Hydrogenation of Substituted Nitroaromatics

Wang

et al. 2021

ACS Appl. Nano Mater.

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Modification of active metals with metal oxide modifiers has attracted considerable attention in heterogeneous catalysis due to their synergistic effect. However, a controllable synthesis of highly reactive and stable metal–metal oxide hybrid nanocatalysts is difficult. To solve this problem, presynthesized IrM (M = Fe, Co, and Ni) bimetallic nanoparticles were initially confined in the mesopores of SBA-15 and were then in situ transformed to Ir-MO x hybrids. The obtained Ir-MO x /SBA-15 nanocatalysts show superior activity and selectivity in the hydrogenation of substituted nitroaromatics to corresponding aromatic amines compared to Ir/SBA-15. Among these Ir-based catalysts, Ir-FeO x /SBA-15 exhibits the highest activity and selectivity and has a wider substrate scope due to the interaction between Ir and FeO x . Therefore, our research provides a way to design reactive and stable hydrogenation catalysts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Transition Metal Oxide-Modified Ir Nanoparticles Supported on SBA-15 Silica for Selective Hydrogenation of Substituted Nitroaromatics

Wang

et al. 2021

ACS Appl. Nano Mater.

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“…Ganji and colleagues investigated for the first time a carboxylic acid functionalized SBA-15 derived Pd nanocatalyst towards the selective catalytic hydrogenation of nitrobenzene in water medium [47]. The synthesis of SBA-15 and SBA-COOH followed reported procedures [48,49] and the preparation of Pd/SBA-COOH catalyst was achieved through dispersion of SBA-COOH in a palladium acetate solution followed by reduction with NaBH 4 .…”

Section: Catalyst Conversion (%) Ee * (%)mentioning

confidence: 99%

Supported Palladium Nanocatalysts: Recent Findings in Hydrogenation Reactions

Andrade¹,

Martins²

2020

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Catalysis has witnessed a dramatic increase on the use of metallic nanoparticles in the last decade, opening endless opportunities in a wide range of research areas. As one of the most investigated catalysts in organic synthesis, palladium finds numerous applications being of significant relevance in industrial hydrogenation reactions. The immobilization of Pd nanoparticles in porous solid supports offers great advantages in heterogeneous catalysis, allowing control of the major factors that influence activity and selectivity. The present review deals with recent developments in the preparation and applications of immobilized Pd nanoparticles on solid supports as catalysts for hydrogenation reactions, aiming to give an insight on the key factors that contribute to enhanced activity and selectivity. The application of mesoporous silicas, carbonaceous materials, zeolites, and metal organic frameworks (MOFs) as supports for palladium nanoparticles is addressed.

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“…To address these issues, the strategy of heterogenization of homogeneous catalytically active moieties over an inorganic solid support has been employed by different scientific communities. This has been accomplished by immobilizing these catalytically active moieties over a variety of solid support materials such as cSiO 2 , multiwalled carbon nanotubes, graphene oxide (GO), metal–organic frameworks, SBA-15, Fe 3 O 4 @SiO 2 , and so on. Among these, graphene/GO-derived nanocomposites have been come out as new star materials in the nanomaterial assisted catalysis. , …”

Section: Introductionmentioning

confidence: 99%

Imidazole-Functionalized Porous Graphene Oxide Nanosheets Loaded with Palladium Nanoparticles for the Oxidative Amidation of Aldehydes

Surabhi

Sah

Shabir

et al. 2022

ACS Appl. Nano Mater.

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In this study, 1-(3-aminopropyl)imidazole-functionalized porous graphene oxide nanosheets (GONs) decorated with palladium nanoparticles (Pd NPs; size, ∼11 nm) have been developed. This has been accomplished via covalent immobilization of amine-terminated imidazolium moieties over GONs, which were further decorated with Pd NPs by employing chemical reduction method. To authenticate the successful preparation of a nanocatalyst (i.e., GO-Imd-Pd), numerous physicochemical characterization techniques, such as FT-IR, XRD, TEM, TGA, SEM, EDAX, XPS, CHN, ICP-MS, and BET surface area analysis, have been utilized. The synthesized hybrid nanomaterial could validate its supremacy as a highly efficacious and heterogeneous nanocatalyst for the oxidative amidation of aldehydes. The prepared hybrid nanomaterial could offer Lewis acidic sites, which could help in the activation of reactant molecules, thereby delivering a high yield of the product. The prepared hybrid nanomaterial could be effortlessly separated from the reaction mixture by simple centrifugation technique. Also, the prepared nanocatalyst showed magnificent recyclability up to six catalytic runs without any perceptible loss in its activity and showed no sign of disintegration.

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A carboxylic acid functionalized SBA-15 supported Pd nanocatalyst: an efficient catalyst for hydrogenation of nitrobenzene to aniline in water

Abstract: The catalytic performance of a PdNPs/SBA-COOH has been investigated for the first time in the selective hydrogenation of nitrobenzene with hydrous hydrazine at RT in water medium.

Cited by 16 publications

References 67 publications

Transition Metal Oxide-Modified Ir Nanoparticles Supported on SBA-15 Silica for Selective Hydrogenation of Substituted Nitroaromatics

Transition Metal Oxide-Modified Ir Nanoparticles Supported on SBA-15 Silica for Selective Hydrogenation of Substituted Nitroaromatics

Supported Palladium Nanocatalysts: Recent Findings in Hydrogenation Reactions

Imidazole-Functionalized Porous Graphene Oxide Nanosheets Loaded with Palladium Nanoparticles for the Oxidative Amidation of Aldehydes

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