Simultaneous dehydrogenation of 1,4- butanediol to γ-butyrolactone and hydrogenation of benzaldehyde to benzyl alcohol mediated over competent CeO2–Al2O3 supported Cu as catalyst

Bhanushali, Jayesh T.; Prasad, Divya; Patil, Komal; Reddy, K. Saidulu; Rao, K. Srinivasa; Nagaraja, Bhari Mallanna

doi:10.1016/j.ijhydene.2020.03.021

Cited by 20 publications

(7 citation statements)

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“…85 However, heterogeneous catalysts are more predominant than homogeneous catalysts 86,87 because they can be separated easily, provide greater advantages regarding stability, separation, and handling, and can be recovered and reused for a number of cycles, making this type of catalytic system more expedient. 88–95 Heterogeneous catalysts such as immobilized complexes or ionic liquids, 96–98 zeolites, 99 metal–organic frameworks (MOFs), 100,101 silica-based catalysts, 102 organic polymer supports, 103 metal oxides 104 and carbon-based catalysts 105 have been widely studied and reviewed in other review articles. However, although heterogeneous catalysts provide easy separation and recyclability, most of these catalysts demonstrate inefficient activity under harsh reaction conditions of high temperatures (>100 °C) and high CO 2 pressures (>30 bar).…”

Section: Introductionmentioning

confidence: 99%

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Raju

Prasad

Srinivasappa

et al. 2022

Sustainable Energy Fuels

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Section: Introductionmentioning

confidence: 99%

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Raju

Prasad

Srinivasappa

et al. 2022

Sustainable Energy Fuels

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“…Searching coupling reaction pathways: For example, alcohol dehydrogenation (such as butane-1,4-diol and 2-phenylethanol) towards the corresponding products and H 2 generation [75][76][77][78] may be coupled with the 5-HMF selective hydrogenation, allowing in situ generation of H 2 and efficient production of 2,5-DMF.…”

Section: Discussionmentioning

confidence: 99%

Recent Advances in Catalytic Conversion of 5‐Hydroxymethylfurfural (5‐HMF) to 2,5‐Dimethylfuran (2,5‐DMF): Mechanistic Insights and Optimization Strategies

et al. 2023

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This review article describes the most recent studies carried out in the catalytic conversion of 5‐hydroxymethylfurfural (5‐HMF) in 2,5‐dimethylfurane (2,5‐DMF). In this way, the most novel catalytic materials are presented and their main results during 2,5‐DMF production through catalytic hydrogen transfer (CHT) by hydrogenation and hydrogenolysis reactions and through hydrodeoxygenation (HDO) reaction as commonly routes employed. Additionally, the optimized reaction conditions applying for each catalyst are discussed. Some future perspectives on the use of CHT and HDO processes in the 2,5‐DMF production from 5‐HMF as platform molecule in order to suggest new applications of pathways in the heterogeneous catalysis field are presented.

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“…1,4-butanediol (BDO) containing two hydroxyl groups is an important platform chemical and has been widely applied in the production of tetrahydrofuran (THF), γ-butyrolactone (GBL), polybutylene terephthalate (PBT), polyurethane (PU), and so on [1][2][3][4]. Recently, BDO has been found to be converted to 3-butene-1-ol (BTO) through selective dehydration over metal oxide catalysts such as CeO 2 [5] and ZrO 2 [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

1,4-Butanediol Selective Dehydration to 3-Butene-1-ol over Ca–Zr–Sn Composite Oxide Catalysts

Dong

Yang

et al. 2022

Catalysts

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Ca–Zr–Sn composite oxides catalysts for 1,4-butanediol (BDO) selective dehydration to 3-butene-1-ol (BTO) are synthesized by impregnation and co-precipitation in the present work. The results show that Ca–Zr–Sn catalysts prepared from co-precipitation by using NaOH-Na2CO3 mixing alkali solution as precipitant exhibit an excellent catalytic property for BDO dehydration to BTO. For instance, Ca–Zr–Sn oxide with Ca/Zr and Sn/Zr molar ratio of 0.68 and 0.28 calcined at 650 °C gives a BDO conversion and BTO selectivity of about 97% and 82%, respectively, and exhibits no deactivation during 1000 h scale-up experimental testing. X-ray diffraction results indicate that catalytic active centers for BDO dehydration to BTO are from Ca0.15Zr0.85O crystal phase. NH3- and CO2-temperature programmed desorption prove that the surface of obtained catalysts can provide a large amount of acid and base sites simultaneously. FT-IR spectra of pyridine-adsorbed samples show that acid sites on the surface of Ca–Zr–Sn oxide catalyst mainly exist in a state of Lewis acid, which activates terminal -OH groups of BDO molecule through complexing. The activated -OH interacts with β-H activated on base sites O2− anions relative to Ca species, thereby the CH2=CH- bonds are produced through dehydration to form BTO.

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Simultaneous dehydrogenation of 1,4- butanediol to γ-butyrolactone and hydrogenation of benzaldehyde to benzyl alcohol mediated over competent CeO2–Al2O3 supported Cu as catalyst

Cited by 20 publications

References 53 publications

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Recent Advances in Catalytic Conversion of 5‐Hydroxymethylfurfural (5‐HMF) to 2,5‐Dimethylfuran (2,5‐DMF): Mechanistic Insights and Optimization Strategies

1,4-Butanediol Selective Dehydration to 3-Butene-1-ol over Ca–Zr–Sn Composite Oxide Catalysts

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Simultaneous dehydrogenation of 1,4- butanediol to γ-butyrolactone and hydrogenation of benzaldehyde to benzyl alcohol mediated over competent CeO2–Al2O3 supported Cu as catalyst

Cited by 20 publications

References 53 publications

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO2 in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO2 in epoxides to form organic carbonates

Recent Advances in Catalytic Conversion of 5‐Hydroxymethylfurfural (5‐HMF) to 2,5‐Dimethylfuran (2,5‐DMF): Mechanistic Insights and Optimization Strategies

1,4-Butanediol Selective Dehydration to 3-Butene-1-ol over Ca–Zr–Sn Composite Oxide Catalysts

Contact Info

Product

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Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates

Recent developments in state-of-the-art silica-modified catalysts for the fixation of CO₂ in epoxides to form organic carbonates