An efficient bifunctional Ru-NbOPO4 catalyst for the hydrodeoxygenation of aromatic ethers, phenols and real bio-oil

Zhao, Hongye; Hu, Xun; Hao, Jianxiu; Li, Na; Zhi, Keduan; He, Rong; Wang, Yunfei; Zhou, Huacong; Liu, Quansheng

doi:10.1016/j.apcata.2019.117378

Cited by 45 publications

(31 citation statements)

References 78 publications

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“…Cu accelerates hydrogenation reaction by improving the cleavage of O CH 3 bond on its oxophilic acidic sites. The same behavior of the metallic active site was reported by Zhu et al 39 and Zhao et al, 20 who investigated the effect of Pt and Nb metallic active phase during the HDO process of anisole. Moreover, the selectivity for phenolic compounds is approximately constant with increasing anisole conversion.…”

Section: Kinetic Of Anisole Conversion To Primary and Nonprimary Prsupporting

confidence: 71%

“…Noble and transition metals are common catalysts utilized for improving the HDO process. 20 Noble metals exhibit higher capacity for promoting reactions, whereas transition metals are usually more selective toward the direct HDO route. [21][22][23] It has been confirmed that the HDO process is enhanced in the presence of an active site for hydrogen activation (leading to hydrogenation and HDO) and an acidic site on support for better C aromatic O cleavage and in addition to catalyzing intermediate reactions such as dehydration, hydrogenolysis, isomerization, and hydrocracking reactions.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, selection of an appropriate catalyst is limited based on the desired product distribution. Noble and transition metals are common catalysts utilized for improving the HDO process 20 . Noble metals exhibit higher capacity for promoting reactions, whereas transition metals are usually more selective toward the direct HDO route 21‐23 .…”

Section: Introductionmentioning

confidence: 99%

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Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading

Saidi

Moradi

2021

Int J Energy Res

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Kinetic of anisole upgrading as a model compound of lignin-derived pyrolysis bio-oil to jet-grade fuels via catalytic hydrotreatment process has been investigated. Hydrodeoxygenation (HDO) process has been performed in a fixed-bed tubular reactor at operating temperature of 573 to 723 K, space velocity of 3 to 120 (anisole weight)/(catalyst weight × h), and hydrogen pressure of 8 bar.Benzene formation through demethoxylation reaction of anisole was identified to be the primary reaction route in contrast to demethylation, alkylation, and transalkylation reaction classes, which are more dominant for synthesized Cu/γ-Al 2 O 3 catalyst. Benzene is formed as the primary product through HDO of phenol assigning the lowest activation energy of 1.18 kJ/mol. Toluene and hexamethylbenzene are derived from alkylation reaction of benzene. Phenol is produced rapidly with highest selectivity among different products as the primary product via hydrogenolysis reaction. According to the kinetic data, phenol formation possesses the highest activation energy of about 59 kJ/mol. Moreover, 2-methylphenol and other phenol-derivatives are produced from alkylation and transalkylation reactions of phenol. The developed comprehensive quantitative reaction network for anisole catalytic hydrotreatment over Cu/γ-Al 2 O 3 is in appropriate agreement with previous studies.

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Section: Kinetic Of Anisole Conversion To Primary and Nonprimary Prsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading

Saidi

Moradi

2021

Int J Energy Res

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“…In this regard, it was concluded that the greater selectivity to toluene for the catalyst NbOx -Pt/C is justified mainly by the adsorption mechanism favored by this material, which induces C-O bond cleavage and hinders aromatic ring hydrogenation (T. Chen & Vohs, 2020). Ru catalysts supported on various materials containing niobium, such as phosphate and niobia, were also synthesized and tested for the production of cyclohexane from hydrodeoxygenation of anisole, in a dense and complete work developed by Zhao et al (2020). Ru/NbOPO4 catalyst had superior performance on initial catalytic tests (170 °C, 1 MPa of H2, 2h of reaction), with 99.3 % conversion of anisole and 94.1 % selectivity in cyclohexane, indicating the high efficiency of this catalyst for deoxygenation even under mild reaction conditions.…”

Section: Figure 5 -Mechanisms Of Hdo Reactions Of Substituted Phenolic Compounds On Pd Catalystsmentioning

confidence: 99%

Uso de compostos de nióbio como catalisadores na produção de biocombustíveis: uma revisão

Moreira¹,

Souza²,

Silva³

et al. 2022

J. Eng. Exact Sci.

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A necessidade de substituir combustíveis fósseis por biocombustíveis não é um tema recente na comunidade acadêmica. Pesquisadores estudam e desenvolvem combustíveis alternativos há décadas e, com isso, combustíveis como o biodiesel e o etanol de primeira geração se consolidaram no mercado. No entanto, esses biocombustíveis de primeira geração competem com a indústria de alimentos, o que afeta sua oferta e preço. Por outro lado, os combustíveis de segunda geração são produzidos a partir de biomassa lignocelulósica e resíduos orgânicos de atividades urbanas e agroindustriais, não competindo com a indústria de alimentos. No entanto, a maioria desses processos ainda não é economicamente viável. Duas das principais contribuições para essa inviabilidade são o baixo desempenho dos processos (baixa conversão da matéria-prima e baixa seletividade dos produtos de interesse) e o alto custo dos catalisadores, que muitas vezes são feitos de metais nobres de pouca disponibilidade. O Nióbio é um metal com diversas aplicações, mas ainda pouco explorado industrialmente como catalisador, apesar de possuir propriedades interessantes para essa finalidade. Este artigo de revisão compila trabalhos envolvendo o uso do nióbio e seus compostos como catalisador em diversos processos de produção de biocombustíveis, como esterificação, pirólise, liquefação, síntese Fischer-Tropsch, desoxigenação, entre outros. Além da revisão da literatura, este artigo apresenta uma análise crítica a respeito das aplicações de cada processo e tecnologia, bem como das pesquisas desenvolvidas pelos autores.

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Section: Porous Metal Oxidesmentioning

confidence: 99%

Advances in Versatile Nanoscale Catalyst for the Reductive Catalytic Fractionation of Lignin

Zhang

et al. 2021

ChemSusChem

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An efficient bifunctional Ru-NbOPO4 catalyst for the hydrodeoxygenation of aromatic ethers, phenols and real bio-oil

Cited by 45 publications

References 78 publications

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading

Uso de compostos de nióbio como catalisadores na produção de biocombustíveis: uma revisão

Advances in Versatile Nanoscale Catalyst for the Reductive Catalytic Fractionation of Lignin

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An efficient bifunctional Ru-NbOPO4 catalyst for the hydrodeoxygenation of aromatic ethers, phenols and real bio-oil

Cited by 45 publications

References 78 publications

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al 2 O 3 catalyst: Reaction network development and kinetic study of anisole upgrading

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al 2 O 3 catalyst: Reaction network development and kinetic study of anisole upgrading

Uso de compostos de nióbio como catalisadores na produção de biocombustíveis: uma revisão

Advances in Versatile Nanoscale Catalyst for the Reductive Catalytic Fractionation of Lignin

Contact Info

Product

Resources

About

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading

Catalytic hydrotreatment of lignin‐derived pyrolysis bio‐oils using Cu/γ‐Al ₂ O ₃ catalyst: Reaction network development and kinetic study of anisole upgrading