Influence of Alumina Binder Content on Catalytic Performance of Ni/HZSM-5 for Hydrodeoxygenation of Cyclohexanone

Kong, Xiangjin; Liu, Junhai

doi:10.1371/journal.pone.0101744

Cited by 26 publications

(13 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, high hydrogen partial pressure leads to the saturation of aromatic intermediates through the hydrogenation reaction and thus prevents the generation of aromatics such as benzene in this reaction condition. This is in accordance with the observations of previous studies . Runnebaum et al observed the presence of aromatics at 573 K and 1.4 bar of hydrogen partial pressure.…”

Section: Resultssupporting

confidence: 93%

“…Based on the obtained results, the reaction networks sketched in Figure are considered for the HDO of cyclohexanone in the presence of pure hydrogen and syngas at 300°C and 20 bar of total pressure. This reaction network is in accordance with the observations of previous studies . The hydrogenation reaction leading to the formation of cyclohexanol is followed by the dehydration reaction, which results in the generation of cyclohexene.…”

Section: Resultssupporting

confidence: 92%

“…This reaction network is in accordance with the observations of previous studies. 64,[67][68][69] The hydrogenation reaction leading to the formation of cyclohexanol is followed by the dehydration reaction, which results in the generation of cyclohexene. The presence of hydrogen could facilitate the further hydrogenation reaction, which leads to the formation of cyclohexane.…”

Section: Liquid Product Analysismentioning

confidence: 99%

See 2 more Smart Citations

The utilization of synthesis gas for the deoxygenation of cyclohexanone over alumina‐supported catalysts: Screening catalysts

Bakhtyari

Sakhayi

Rahimpour

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Environmental regulations motivate the industries to replace conventional fuels and chemicals by those produced from biomass. In this regard, hydrodeoxygenation of lignin compounds is of a great deal of attention. Synthesis gas could be utilized instead of pure hydrogen for the cleavage of oxygen‐containing chemical bonds through hydrodeoxygenation. Following this, the utilization of synthesis gas is investigated in the present contribution. A wide range of commercial alumina‐supported catalysts is investigated. The experimental results of cyclohexanone hydrodeoxygenation in the presence of pure hydrogen and synthesis gas at 573 K and 20 bar of total pressure are presented and discussed. The whole investigated catalysts show good activity toward the hydrodeoxygenation of cyclohexanone. Methylatedbenzene derivatives are produced from cyclohexanone hydrodeoxygenation for the first time. The catalysts composed of platinum showed the best performance. By utilizing a chlorinated platinum catalyst, 89.6% cyclohexanone conversion, 100% total hydrocarbon selectivity, and 44.6% total hydrocarbon yield are obtained. In the case of syngas‐assisted hydrodeoxygenation, 80.1% cyclohexanone conversion, 100% total hydrocarbon selectivity, and 29.6% total hydrocarbon yield are obtained by utilizing the same catalyst. The presence of methylated aromatics proves the accomplishment of methanation or direct aromatization reactions in the presence of carbon oxides and hydrogen.

show abstract

Section: Resultssupporting

confidence: 93%

Section: Resultssupporting

confidence: 92%

Section: Liquid Product Analysismentioning

confidence: 99%

See 1 more Smart Citation

The utilization of synthesis gas for the deoxygenation of cyclohexanone over alumina‐supported catalysts: Screening catalysts

Bakhtyari

Sakhayi

Rahimpour

et al. 2020

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

show abstract

“…The catalyst pellet appeared to be the best formulation over catalyst extrudates ( Figure 5). A new concept appeared along with the study of Kong et al [14] devoted to the inter-crystalline mesoporosity generation by the addition of binders. They observed an increase of mesopores created by intercrystalline voids of alumina crystallites leading to a better performance of Ni/ZSM-5 zeolite in the hydrodeoxygenation of cyclohexanone.…”

Section: Silica and Alumina Bindersmentioning

confidence: 99%

An Overview on Zeolite Shaping Technology and Solutions to Overcome Diffusion Limitations

2018

View full text Add to dashboard Cite

Synthetic zeolites are widely used as catalysts/carriers for many petrochemical reactions and in refining processes. These materials are usually synthesized in a powder form and must be shaped prior to use in industrial reactors. This review presents the state-of-the-art of the zeolite shaping technology describing the main modifications induced by the interactions between the zeolite and the binder. Additionally, a strategy is presented to overcome the diffusion limitations associated to the microporous structure of zeolites, consisting in the introduction of hierarchical porosity in the binder. Several developments in the field of hierarchical aluminas are summarized in this article, highlighting the possibility to design different ordered/disordered mesoporous and macroporous structures.

show abstract

“…3. Typical peaks of HZSM-5 (23-24°) were maintained in all catalysts, indicating that the framework of HZSM-5 remained constant after nickel loading [41]. The peaks of NiO (37.2°, 43.3°) were detected in the diffraction patterns of 7.64 % NiO/HZSM-5 and 15.27 % NiO/HZSM-5.…”

Section: Characterization Of the Catalystsmentioning

confidence: 78%

Converting Alkali Lignin to Biofuels over NiO/HZSM‐5 Catalysts Using a Two‐Stage Reactor

et al. 2017

View full text Add to dashboard Cite

A series of NiO/HZSM‐5 catalysts were used to convert alkali lignin to hydrocarbon biofuels in a two‐stage catalytic pyrolysis system. The results indicated that all NiO/HZSM‐5 catalysts reduced the content of undesirable phenols, furans, and alcohols of the biofuel compared to non‐catalytic treatment. The NiO/HZSM‐5 catalyst with the lowest amount of NiO generated the highest biofuel yield in all catalytic treatments, and it also produced biofuel with the highest content of hydrocarbons. The emission of carbon oxides (CO and CO2) increased in the treatments with higher‐NiO loading HZSM‐5 due to the redox reaction between NiO and the oxygenated compounds in the bio‐oil. Ni2SiO4 was generated in the used NiO/HZSM‐5 catalysts during the high‐temperature pyrolysis process.

show abstract

Influence of Alumina Binder Content on Catalytic Performance of Ni/HZSM-5 for Hydrodeoxygenation of Cyclohexanone

Cited by 26 publications

References 13 publications

The utilization of synthesis gas for the deoxygenation of cyclohexanone over alumina‐supported catalysts: Screening catalysts

The utilization of synthesis gas for the deoxygenation of cyclohexanone over alumina‐supported catalysts: Screening catalysts

An Overview on Zeolite Shaping Technology and Solutions to Overcome Diffusion Limitations

Converting Alkali Lignin to Biofuels over NiO/HZSM‐5 Catalysts Using a Two‐Stage Reactor

Contact Info

Product

Resources

About