Hydrotalcite-Impregnated Copper and Chromium-Doped Copper as Novel and Efficient Catalysts for Vapor-Phase Hydrogenation of Furfural: Effect of Clay Pretreatment

Ghashghaee, Mohammad; Shirvani, Samira; Farzaneh, Vahid; Sadjadi, Samahe

doi:10.1590/0104-6632.20180352s20160703

Cited by 11 publications

(6 citation statements)

References 55 publications

(69 reference statements)

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“…Nonetheless, other zeolite-based catalysts, e.g., H-ZSM-12, are also known to have good catalytic activity for the esterification of levulinic acid . Hydrotalcite is chosen as a basic component to prepare the composite along with H-ZSM-5 because of the superior activity of hydrotalcite-based catalysts in hydrogenation reactions including FUR hydrogenation. − It is proven that the basic sites on the calcined hydrotalcite surface synergistically enhance the activity of metal sites toward hydrogenation through the adsorption and activation of a >CO group . Cu is chosen as the active metal owing to its appreciable activity toward hydrogenation, lower cost, higher abundance, nontoxic nature, and well-documented surface properties. − ,− Moreover, Cu-based catalysts are well known for their appreciable activity in the hydrogenation of furfural. − The Cu@HT-ZSM-5 catalyst showed excellent catalytic performance for the production of EL owing to the presence of basic sites, metal sites, and acid sites, which facilitate the adsorption of a >CO group, hydrogenation of a >CO group, and alcoholysis step, respectively.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Tathod

Saini

Arumugam

et al. 2023

ACS Appl. Nano Mater.

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An acido-basic nanocomposite is prepared through the in situ formation and growth of Mg–Al hydrotalcite nanocrystals on a ZSM-5 surface. The metal-functionalized hydrotalcite-ZSM-5 composite has been employed as a catalyst for the single-pot conversion of furfural to ethyl levulinate. The specific morphology of the composite with edge-to-face attachment of hydrotalcite nanocrystals on the ZSM-5 surface confirms the accessibility to the active sites located inside the zeolite pores. The prepared samples are thoroughly characterized using techniques like HR-SEM, HR-TEM, XRD, FTIR, N2 adsorption–desorption, TPD, TPR, UV–Vis spectroscopy, XPS, etc. for a better understanding of the catalyst properties. As high as 76% yield of ethyl levulinate was obtained through the cascaded transfer hydrogenation–alcoholysis reaction using ethanol as a H2 donor. In metal-functionalized hydrotalcite-ZSM-5 composite, metallic sites, basic sites, and acid sites are in close proximity, which act synergistically to exhibit superior catalytic performance.

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Section: Introductionmentioning

confidence: 99%

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Tathod

Saini

Arumugam

et al. 2023

ACS Appl. Nano Mater.

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“…[1,[19][20][21] CuO x (and Cu 2 + ) species have been also supported on clay minerals, which have abundant resources, low cost, and high thermal stability, using various methods, such as ion exchange, decomposition-precipitation, precursor reduction, and impregnation methods. [22][23][24][25][26] Recently, organic polymers have been used to support metals on clay. Utilizing the electrostatic interaction between the negative charges between the layers of clay and the positive charges of cationic molecules, organic polymer-inorganic (clay) hybrids can be fabricated by intercalating cationic monomers or polymers such as aniline, chitosan, poly(1-methyl-4-vinylpyridinium), and polyethyleneimine (PEI).…”

Section: Introductionmentioning

confidence: 99%

Polymer Template Synthesis of CuO_x/Clay Nanocomposites with Controllable CuO_x Formation

Takeuchi,

Ohkubo

2023

ChemistrySelect

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Metal oxides have the excellent functions including high thermal stability, electrical properties, catalytic performance, and adsorption properties of acid gases such as CO2 via the acid‐base interactions. However, they suffer from low reserves, porosity control, and low adsorption efficiency per weight compared with lightweight materials including carbon and silica. To solve these issues, various methods for supporting metal oxides on porous carriers, such as decomposition‐precipitation and impregnation, have been investigated, but controlling the formation of metal oxide on clay nanosheets remains as a challenge. Herein, we developed a soft‐template method for supporting metal oxide (CuOx) nanoparticles on activated clay nanosheets. The intercalation of polyethyleneimine (PEI)−Cu2+ complexes between the layers of clay nanosheets followed by calcination to construct CuOx and remove the PEI templates afforded CuOx/clay nanocomposites. The constructed CuOx/clay nanocomposites had the close porosity to that of clay. Tuning the Cu2+/PEI ratio in PEI−Cu2+ complex allowed to control CuOx states (loadings, particle sizes, etc.). Tuning of the supporting conditions allowed constructing a structure suitable for CO2 uptake. These findings will contribute to the development of the material science of metal oxide nanoparticles and their hybrid materials in diverse fields including CO2 adsorbents, energy devices, and catalysts.

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“…5,6 Traditionally, THFL is produced from furfural in a two-step procedure with furfuryl alcohol as the intermediate, which is an energy intensive strategy. [7][8][9] Direct conversion of furfural to THFL is more appealing and has been studied over both noble and nonnoble metal catalysts. 10,11 Noble metallic catalysts usually show better performance than nonnoble metal catalysts; for example, a 100% THFL yield was reported over Pd/UiO-66 catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…Tetrahydrofurfuryl alcohol (THFL) is an environmentally friendly solvent and chemical intermediate in industrial and agricultural fields 5,6 . Traditionally, THFL is produced from furfural in a two‐step procedure with furfuryl alcohol as the intermediate, which is an energy intensive strategy 7–9 . Direct conversion of furfural to THFL is more appealing and has been studied over both noble and nonnoble metal catalysts 10,11 .…”

Section: Introductionmentioning

confidence: 99%

Ni@C@CNT catalyst derived from CNT doped Ni‐MOF for furfural hydrogenation to tetrahydrofurfuryl alcohol

Yuan

Liu

Guo

et al. 2022

Asia-Pacific J Chem Eng

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Conversion of biomass-derived furfural platform compound to value-added tetrahydrofurfuryl alcohol (THFL) molecule is a sustainable route, and an efficient nonnoble metallic catalyst is a key factor for this reaction. In this work, Ni@C@CNT composite as a highly effective catalyst for hydrogenation of furfural to tetrahydrofurfuryl alcohol was synthesized by one-step pyrolysis of Nicentered metal organic framework (Ni-MOF) doping with carbon nanotube (CNT). For comparison, Ni@C catalyst derived directly from Ni-MOF was also synthesized. The characterization results show that the doping of CNT promotes high dispersion of active sites and formation of Ni 3 C phase which has Pt-like catalytic activity. Therefore, the obtained Ni@C@CNT exhibited excellent activity in furfural hydrogenation (99.1% furfural conversion and 94.7% THFL yield at 120 C, 4 h, 4-MPa initial hydrogen pressure). Ni@C@CNT also shows good stability in reuse test. Current work presents a facile method for preparation of nonnoble metallic catalysts with high efficiency.

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Hydrotalcite-Impregnated Copper and Chromium-Doped Copper as Novel and Efficient Catalysts for Vapor-Phase Hydrogenation of Furfural: Effect of Clay Pretreatment

Cited by 11 publications

References 55 publications

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Polymer Template Synthesis of CuO_x/Clay Nanocomposites with Controllable CuO_x Formation

Ni@C@CNT catalyst derived from CNT doped Ni‐MOF for furfural hydrogenation to tetrahydrofurfuryl alcohol

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Hydrotalcite-Impregnated Copper and Chromium-Doped Copper as Novel and Efficient Catalysts for Vapor-Phase Hydrogenation of Furfural: Effect of Clay Pretreatment

Cited by 11 publications

References 55 publications

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Hybrid Nanocomposite Comprising Mg–Al Hydrotalcite Nanocrystals on ZSM-5 Zeolite for Production of Renewable Fuel Additives from Furfural

Polymer Template Synthesis of CuOx/Clay Nanocomposites with Controllable CuOx Formation

Ni@C@CNT catalyst derived from CNT doped Ni‐MOF for furfural hydrogenation to tetrahydrofurfuryl alcohol

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Product

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Polymer Template Synthesis of CuO_x/Clay Nanocomposites with Controllable CuO_x Formation