Acetophenone hydrogenation on Rh/Al2O3 catalyst: Intrinsic reaction kinetics and effects of internal diffusion

Lee, Shinbeom; Yu, Zhiyang; Zaborenko, Nikolay; Varma, Arvind

doi:10.1016/j.cej.2015.12.018

Cited by 22 publications

(13 citation statements)

References 58 publications

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“…46 The adsorption of HKUST–Fe 3 O 4 for RhB was also controlled by external diffusion (i.e., surface adsorption and liquid film diffusion). 46 In addition, Langmuir and Freundlich isotherm models were employed to analyze the adsorption mechanism of HKUST–Fe 3 O 4 for RhB of different concentrations. 47 Compared with the correlation coefficients ( R 2 ) in Table 2, it was found that the Freundlich model gave a better fitting than the Langmuir model, suggesting that the binding sites were heterogeneous with multiple binding interactions.…”

Section: Resultsmentioning

confidence: 99%

Bottom-Up Formation of Carbon-Based Magnetic Honeycomb Material from Metal–Organic Framework–Guest Polyhedra for the Capture of Rhodamine B

Shui

Bai

et al. 2019

ACS Omega

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Three-dimensional carbon-based porous materials have proven to be quite useful for tailoring material properties in the energy conservation and environmental protection applications. In view of the three-dimensional and well-defined structure of metal–organic frameworks (MOFs), a novel carbon-based magnetic porous material (HKUST–Fe 3 O 4 ) has been designed and constructed by MOF–guest interactions of high-temperature pyrolysis. The obtained HKUST–Fe 3 O 4 exhibited the unique features of superparamagnetism, a macro/mesoporous structure, environmental protection (inexistence of toxic heavy metal ions), and physicochemical stability and has shown high adsorption capacity and rapid adsorption for carcinogenic organic pollutants (for example, rhodamine B) with an environmentally friendly character and excellent reusability. We demonstrate that the unique/superior advantages of HKUST–Fe 3 O 4 could meet the requirements of environment cleaning, especially for removing the targeted organic pollutant from water. Moreover, the specific HKUST–Fe 3 O 4 and organic pollutant interaction mechanism has been analyzed in detail via parameter-free calculations. This study proposes a promising strategy for constructing novel carbon-based magnetic nanomaterials for various applications, not limitated to pollutant removal.

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Section: Resultsmentioning

confidence: 99%

Bottom-Up Formation of Carbon-Based Magnetic Honeycomb Material from Metal–Organic Framework–Guest Polyhedra for the Capture of Rhodamine B

Shui

Bai

et al. 2019

ACS Omega

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“…It is assumed that only the target product PE is generated to simplify the calculation. The hydrogenation of AP using the Ni–B–P/SiO 2 catalyst can be described by the L–H‐type rate mechanism . It is assumed that the adsorption of AP on the Ni–B–P/SiO 2 catalyst is stronger than that of hydrogen while the product is not adsorbed.…”

Section: Resultsmentioning

confidence: 99%

Highly selective hydrogenation of acetophenone over supported amorphous alloy catalyst

Wang

Zhang

et al. 2020

Applied Organom Chemis

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Alpha‐phenylethanol (PE) is an essential chemical in the field of medicine and synthetic perfumery. Therefore, in this work, we used a supported Ni–B–P amorphous alloy catalyst (Ni–B–P/SiO2) in the hydrogenation of acetophenone (AP) to α‐PE, which demonstrated excellent catalytic activity and selectivity, compared with Ni–B/SiO2 (KBH4 reduction of nickel salt). Ni–B–P/SiO2 exhibited a high AP hydrogenation conversion of approximately 99%, whereas the PE selectivity reached up to 94%, which is approximately 1.4‐fold higher than that of Ni–B/SiO2 (about 69%), thereby directly proving the unique inhibition of AP hydrogenation over hydrogenation of P in the Ni–B catalytic system. The doped P in Ni–B–P/SiO2 enhances the oxidation resistance and maintains the valence stability of Ni and B. Furthermore, sufficient experimental data were collected to determine the kinetic parameters. Based on the Langmuir–Hinshelwood model, we assumed that (i) AP and H2 compete for adsorption on Ni–B–P/SiO2; (ii) AP has strong adsorptive capacity on Ni–B–P/SiO2; and (iii) PE coverage on the catalyst was negligible. Then, the dynamic equation was derived, which indicated that experimental data agree well with the dynamic model. Finally, the activation energy was confirmed to be 50.73 KJ/mol. This report will open up an avenue for the industrialization of amorphous alloy catalysts.

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“…[12][13][14][15][16] However, these traditional reactors possess a few intrinsic problems: (i) the diffusion of reactants and/or products is hindered by limited diffusion channels within the catalytic zone, which result in decreased reaction rates and poor product selectivity. [17][18][19][20] (ii) poor thermal conductivity and mechanical strength in catalyst supports can lead to catalyst sintering and structural degradation during these reactions. [21][22][23] (iii) the post-reaction, separation of the catalyst from the products increases the operational cost.…”

Section: Introductionmentioning

confidence: 99%

Preparation and catalytic performance of active metal sintered membrane reactor anchored with Pt atoms

et al. 2021

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Acetophenone hydrogenation on Rh/Al2O3 catalyst: Intrinsic reaction kinetics and effects of internal diffusion

Cited by 22 publications

References 58 publications

Bottom-Up Formation of Carbon-Based Magnetic Honeycomb Material from Metal–Organic Framework–Guest Polyhedra for the Capture of Rhodamine B

Bottom-Up Formation of Carbon-Based Magnetic Honeycomb Material from Metal–Organic Framework–Guest Polyhedra for the Capture of Rhodamine B

Highly selective hydrogenation of acetophenone over supported amorphous alloy catalyst

Preparation and catalytic performance of active metal sintered membrane reactor anchored with Pt atoms

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