A Comparative Study of NiO/Al2O3 Catalysts Prepared by Different Combustion Techniques for Octanal Hydrogenation

Farahani, Majid D.; Valand, Jignesh; Mahomed, Abdul S.; Friedrich, Holger B.

doi:10.1007/s10562-016-1858-7

Cited by 12 publications

(7 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown that sol–gel auto combustion using oxalyldihdrazide facilitates the synthesis of NiAl 2 O 4 . However, a high calcination temperature (≈1000 °C) is required for the synthesis of pure‐phase NiAl 2 O 4 .…”

Section: Resultsmentioning

confidence: 99%

“…Nickel aluminate is a member of the spinel family with the general formula of AB 2 O 4 and is known to have a magnetoplumbite‐like structure . Preparation techniques for the synthesis of NiAl 2 O 4 include coprecipitation, sol–gel, solid‐state reaction, the alkoxide method, Pechini, and combustion synthesis . NiAl 2 O 4 had been used for the partial oxidation of methane, methane (steam or dry) reforming, oxidative coupling of methane, diesel steam reforming, tar reforming, and tetradecane reforming .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

2018

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The C16 diol can then be dehydrated to a C16 α,β-unsaturated aldehyde, which upon further hydrogenation yields the saturated 2-hexyldecanol (Scheme ). − The other major side reaction involves the reaction between an octanal and octanol molecule over acidic sites, which results in a C16 hemiacetal intermediate. Upon dehydration and reaction with another octanol molecule, one sees the formation of the C24 acetal.…”

Section: Results and Discussionmentioning

confidence: 99%

Continuous Flow Preferential Hydrogenation of an Octanal/Octene Mixture Using Cu/Al₂O₃ Catalysts

et al. 2018

Self Cite

View full text Add to dashboard Cite

γ-Alumina-supported catalysts with varying copper loadings (5–25 wt %) were prepared by incipient wet impregnation and characterized by various characterization techniques. These catalysts were tested for the selective hydrogenation of octanal in a mixture containing 10 wt % octanal and 2 wt % octene diluted in octanol. The reactions were carried out in a continuous flow fixed-bed reactor in a down flow mode with varying pressures, liquid hourly space velocities, and hydrogen (H 2 )-to-aldehyde molar ratios. The catalyst activities were assessed over a temperature range between 100 and 180 °C using hydrogen gas as the hydrogen source. The results obtained showed that under these experimental conditions, copper preferentially hydrogenates the aldehyde and the copper content exhibited no significant influence on the catalyst activity or product selectivity. Kinetic modeling revealed that both octanal and octene hydrogenation were first-order reactions, although octene conversion was very low until octanal conversion had reached a significant level. The activation energy for octanal hydrogenation is higher than the octene hydrogenation. A maximum octanal conversion of >99% was obtained at 160 °C, and the best selectivity toward octanol of 99% was achieved at 100 °C (53% conversion). The pressure played a small role with regards to octanal conversion and selectivity toward octanol, whereas it exhibited a significant influence on the octene conversion. Increasing the hydrogen-to-aldehyde ratio was found to have a direct influence on both octanal and octene conversion.

show abstract

“…They characterized the spent supported catalysts from this application and suggested that the active sites for methanol formation are in situ formed mixed NiO with metal support interactions with the Fe 2 O 3 and NiFe 2 O 4 spinel with both hydrogenating and RWGS ability. 38,40,41 3). 32,40,42 CoO x /MgO and Al 2 O 3 were used as catalysts for CO 2 hydrogenation to methanol.…”

Section: Ni-based Catalystsmentioning

confidence: 99%

“…Using an optimal catalyst under an optimized condition, the system with a thermal‐plasma setup performed 5.8‐folds better than the pure thermal method. They characterized the spent supported catalysts from this application and suggested that the active sites for methanol formation are in situ formed mixed NiO with metal support interactions with the Fe 2 O 3 and NiFe 2 O 4 spinel with both hydrogenating and RWGS ability 38,40,41 …”

Section: Co2 Hydrogenation To Methanolmentioning

confidence: 99%

The application of nonthermal plasma in methanol synthesis via CO₂ hydrogenation

Farahani

Zeng

Zheng

2022

Energy Science & Engineering

Self Cite

View full text Add to dashboard Cite

CH3OH is an energy carrier that can be generated from renewable resources and be used as a fuel in fuel cells and internal combustion engines and a platform chemical for the synthesis of value‐added chemicals or gasoline. Carbon dioxide (CO2) hydrogenation is one of the widely researched methods to generate methanol. The traditional CO2 hydrogenation reaction method (requires high H2 pressure and temperatures) has attracted considerable attention. However, the new emerging field of catalysis referred to as nonthermal plasma (NTP) catalysis has also been developed extensively for methane reforming and CO2 hydrogenation to methane and CO. The plasma‐assisted approach not only presents remarkable advantages, such as room temperature and atmospheric H2 pressure but also has great potential to be powered by renewable electricity in a flexible way since it can be easily switched on/off. In this account, we review the recent articles published on methanol synthesis from CO2 and H2 using NTP. We reviewed and discussed the mechanism of this reaction under NTP, the modification of the reactor configurations, and the rationale behind the catalyst design. In the end, we discussed the advantages and disadvantages of each of these works and the future perspectives of this interesting privileged reaction. We believe this review is of interest to researchers active in sustainable heterogeneous catalysis.

show abstract

A Comparative Study of NiO/Al2O3 Catalysts Prepared by Different Combustion Techniques for Octanal Hydrogenation

Cited by 12 publications

References 58 publications

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

Continuous Flow Preferential Hydrogenation of an Octanal/Octene Mixture Using Cu/Al₂O₃ Catalysts

The application of nonthermal plasma in methanol synthesis via CO₂ hydrogenation

Contact Info

Product

Resources

About

A Comparative Study of NiO/Al2O3 Catalysts Prepared by Different Combustion Techniques for Octanal Hydrogenation

Cited by 12 publications

References 58 publications

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl2O4: An Example of Beneficial Coking in Catalysis over Spinel

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl2O4: An Example of Beneficial Coking in Catalysis over Spinel

Continuous Flow Preferential Hydrogenation of an Octanal/Octene Mixture Using Cu/Al2O3 Catalysts

The application of nonthermal plasma in methanol synthesis via CO2 hydrogenation

Contact Info

Product

Resources

About

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

Oxidative Dehydrogenation of n‐Octane over Niobium‐Doped NiAl₂O₄: An Example of Beneficial Coking in Catalysis over Spinel

Continuous Flow Preferential Hydrogenation of an Octanal/Octene Mixture Using Cu/Al₂O₃ Catalysts

The application of nonthermal plasma in methanol synthesis via CO₂ hydrogenation