Hydrogenation of 4-nitroacetophenone over Rh/silica

Currall, Kathryn; Jackson, S. David

doi:10.1016/j.apcata.2014.07.011

Cited by 18 publications

(9 citation statements)

References 20 publications

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“…Consistent with the activity trend and H 2 -microcalorimetric result, the Pt 1 /Fe 2 O 3 -500 has a much larger KIE than Pt 1 /Fe 2 O 3 -600 (6.55 vs. 2.03, Supplementary Table 7), suggesting that H 2 activation is more difficult for the Pt 1 /Fe 2 O 3 -500. It is noted that the KIE value obtained on the Pt 1 /Fe 2 O 3 -600 catalyst is comparable to those reported on noble metal NP catalysts 46,47 , suggesting that the surface reaction, rather than the hydrogen dissociation, is the RDS. In contrast, the similar large KIE to the Pt 1 /Fe 2 O 3 -500 was reported for Ag/Al 2 O 3 NPs as well as Pd 1 /TiO 2 SAC, both of which featured poor capability for hydrogen activation 19,48 .…”

Section: Resultssupporting

confidence: 71%

Unraveling the coordination structure-performance relationship in Pt1/Fe2O3 single-atom catalyst

et al. 2019

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Heterogeneous single-atom catalyst (SAC) opens a unique entry to establishing structure–performance relationship at the molecular level similar to that in homogeneous catalysis. The challenge lies in manipulating the coordination chemistry of single atoms without changing single-atom dispersion. Here, we develop an efficient synthetic method for SACs by using ethanediamine to chelate Pt cations and then removing the ethanediamine by a rapid thermal treatment (RTT) in inert atmosphere. The coordination chemistry of Pt single atoms on a Fe2O3 support is finely tuned by merely adjusting the RTT temperature. With the decrease in Pt-O coordination number, the oxidation state of Pt decreases, and consequently the hydrogenation activity increases to a record level without loss of chemoselectivity. The tunability of the local coordination chemistry, oxidation states of the metal, and the catalytic performance of single atoms reveals the unique role of SACs as a bridge between heterogeneous and homogeneous catalysis.

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Section: Resultssupporting

confidence: 71%

Unraveling the coordination structure-performance relationship in Pt1/Fe2O3 single-atom catalyst

et al. 2019

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“…Ph-NH chemisorbs near a chemisorbed hydrogen atom and then is desorbed from the surface as aniline. Presence of nitrene has been suggested by Jackson et al who studied hydrogenation of 2-, 3-and 4-nitro acetophenone to respective anilines [55,56].…”

Section: Kinetic and Mechanistic Considerationsmentioning

confidence: 91%

Liquid phase hydrogenation of nitrobenzene

Turáková

Salmi

Eränen

et al. 2015

Applied Catalysis A: General

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“…Noble metal catalysts, such as Pt, , Pd, , and Rh, , are generally considered to have strong activity for catalytic hydrogenation. For example, the two-dimensional metallic Pd nanosheet catalysts showed high nitrobenzene conversion as well as high aniline selectivity under 50 °C and 1.0 MPa of H 2 .…”

Section: Introductionmentioning

confidence: 99%

“…8 The hydrogenation of nitroaromatics can be carried out in the gas or liquid phase, and developing highly efficient catalysts is the key to promote this process. 9−11 Noble metal catalysts, such as Pt, 12,13 Pd, 14,15 and Rh, 16,17 are generally considered to have strong activity for catalytic hydrogenation. For example, the two-dimensional metallic Pd nanosheet catalysts showed high nitrobenzene conversion as well as high aniline selectivity under 50 °C and 1.0 MPa of H 2 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Mesoporous Silica-Supported NiCo Bimetallic Nanocatalysts and Their Enhanced Catalytic Hydrogenation Performance

Wang

et al. 2023

ACS Omega

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In this work, mesoporous silica SBA-16-supported NiCo bimetallic nanocatalysts were synthesized by coimpregnation of Ni and Co precursors followed by calcination and reduction, and various characterization techniques confirm the formation of NiCo bimetallic nanostructures in the catalysts. The synthesized NiCo/SBA-16 shows enhanced catalytic performance for hydrogenation of a series of nitroaromatics. Under the reaction conditions of 80 °C and 1.0 MPa of H2, the yields of aniline for nitrobenzene hydrogenation over NiCo0.3/SBA-16 can reach more than 99% at 2.0 h. The enhanced catalytic performance can be ascribed to the formation of NiCo bimetallic nanostructures, where the synergistic effect between Ni and Co improves their catalytic activities for hydrogenation of nitroaromatics.

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Hydrogenation of 4-nitroacetophenone over Rh/silica

Cited by 18 publications

References 20 publications

Unraveling the coordination structure-performance relationship in Pt1/Fe2O3 single-atom catalyst

Unraveling the coordination structure-performance relationship in Pt1/Fe2O3 single-atom catalyst

Liquid phase hydrogenation of nitrobenzene

Synthesis of Mesoporous Silica-Supported NiCo Bimetallic Nanocatalysts and Their Enhanced Catalytic Hydrogenation Performance

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