Ni–Re alloy catalysts on Al2O3 for methane dry reforming

Cichy, Marcin; Pańczyk, M.; Słowik, Grzegorz; Zawadzki, Witold; Borowiecki, T.

doi:10.1016/j.ijhydene.2022.03.147

Cited by 20 publications

(6 citation statements)

References 83 publications

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“…VXC: Vulcan XC-72, a commercial carbon black as support. Reproduced or adapted with permission from refs − . Copyrights 2016 Royal Society of Chemistry, 2016 and 2019 American Chemical Society, 2022 Elsevier.…”

Section: Re Decorator In Bimetallic Systemmentioning

confidence: 99%

“…Cichy et al used 1–4 wt % Re species to decorate 17 wt % Ni/Al 2 O 3 catalyst concerning the easy deactivation of Ni catalysts by coke. Ni–Re alloy was formed after prereduction at 800 °C, as illustrated in Figure .…”

Section: Re Decorator In Bimetallic Systemmentioning

confidence: 99%

“…Ni and Re distribution on reduced catalysts surface of (A) Ni/Al 2 O 3 and (B) Ni-2Re/Al 2 O 3 , and (C) Raman spectra of Ni–Re catalysts after reaction. Reproduced or adapted with permission from ref . Copyright 2022 Elsevier.…”

Section: Re Decorator In Bimetallic Systemmentioning

confidence: 99%

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Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Luo,

Liang

2024

ACS Catal.

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Rhenium has a special existence in precious metals. In current catalysis, nanoscale Re(O x ) is appreciated by researchers and used to design effective catalyst systems for a variety of hydrogenation reactions, which are widely applied in the fields of petroleum refining, industrial chemical production, and biomass conversion. Current reports focus on the shining characteristics of Re with changeable chemical valences and high oxophilicity. Re-based catalyst provides an essential electronic environment in bimetallic catalysts or behaves as the main reactive center with efficiency. Regardless, there are still limited research works on rhenium compared to other traditional metal catalysts. Herein, investigations concerning Re catalysis during the past decade are summarized. As a burgeoning star, the essential roles of Re sites as a decorator and even the main centers are interpreted in this Review. The advantages of Re in bimetallic and monometallic catalysts, the available-tuned surface and geometric structure, the factors influencing their catalytic behaviors, and the typical heterogeneous reaction models are expressed thoroughly. This Review may shed light on those researchers who are anxious to find more strategies to conquer a tough task and those who are just stepping into the world of rhenium catalysis.

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Section: Re Decorator In Bimetallic Systemmentioning

confidence: 99%

Section: Re Decorator In Bimetallic Systemmentioning

confidence: 99%

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Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Luo,

Liang

2024

ACS Catal.

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“…Compared with metallic nickel catalysts, it is a very effective catalyst modification strategy to construct bimetals by adding auxiliary metals to promote the dispersion of active centers and thus improve the catalytic activity. − In recent years, Ni–Re bimetallic catalysts have attracted much attention. − Yang et al reported that the formation of Ni–Re alloy changed the geometric and electronic properties of metal Ni, promoted the cleavage of C–O bond in methyl cresol HDO, and inhibited the hydrogen hydrolysis of C–C bond. Chaya Kul et al found that adding Re to Ni/CeO 2 can promote the water–gas conversion reaction and produce more H 2 .…”

Section: Introductionmentioning

confidence: 99%

Upgrading of Aqueous Ethanol to Long-Chain Alcohols over Immobilized Highly Dispersed Ni–Re Catalyst

Zhang,

Liu,

Jiang

et al. 2024

Ind. Eng. Chem. Res.

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Motivated by the carbon neutrality policy and the demand for value-added bio-based chemicals, it is of great significance and interest to directly upgrade aqueous ethanol to produce long-chain alcohol chemicals and transportation biofuel. In this study, a bimetallic catalyst composed of Re doped Ni@C was prepared by a facile sol–gel method. The bimetal 70-NiRe@C demonstrated higher selectivity toward target long-chain alcohols product and lower selectivity of C1 byproducts than the monomeric metal Ni@C. The addition of Re promotes the dispersion of active Ni on the graphite carrier, contributing to the superior 59.9% ethanol conversion and 45.0% long-chain alcohol yield. This work guides future research into the direct upgrading of water-based bioethanol to the value-added long-chain fine chemicals and biofuels required.

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“…In order to minimize the impact of deactivation, particularly coke formation, a variety of secondary metals, including Ru [18], Re [19], Ir [20], Fe [21], Co [22] and Cu [23], have been studied for nickel-based bimetallic catalysts. The increase in nickel dispersion and the adjustment of the redox property are attributed to this improvement [24].…”

Section: Introductionmentioning

confidence: 99%

The Role of Fe in Ni-Fe/TiO2 Catalysts for the Dry Reforming of Methane

Dhillon,

Cao,

2023

Catalysts

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A series of nickel- and iron-modified titanium dioxide (Ni-Fe/TiO2) are studied for the dry reforming of methane (DRM) at 550 °C. Temperature-programmed surface reactions using CH4 and CO2 as probe molecules, as well as activity results, confirmed that both CO2 and CH4 conversion decreased with the addition of Fe. The XPS results obtained from reduced and used catalysts suggested changes in the surface nickel and iron species. Characterizations, particularly thermogravimetric analysis (TGA) and Raman spectroscopy over used catalysts, revealed that the addition of Fe can greatly inhibit the coke formation. In situ DRIFTS further identified that the addition of Fe favored the formation of carbonate species, which can facilitate the removal of coke deposited on the surface.

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Ni–Re alloy catalysts on Al2O3 for methane dry reforming

Cited by 20 publications

References 83 publications

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Rhenium in Heterogeneous Catalysis: A Rising Star for Hydrogenation Reactions

Upgrading of Aqueous Ethanol to Long-Chain Alcohols over Immobilized Highly Dispersed Ni–Re Catalyst

The Role of Fe in Ni-Fe/TiO2 Catalysts for the Dry Reforming of Methane

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