Preparation of Cu-MgO catalysts with different copper precursors and precipitating agents for the vapor-phase hydrogenation of furfural

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

doi:10.1007/s11814-016-0344-7

Cited by 25 publications

(7 citation statements)

References 43 publications

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“…Furfuryl alcohol is readily produced at the industrial level from the gas-phase reduction of furfural with hydrogen over Cu-based catalysts . Nevertheless, numerous recent reports in the primary literature were still devoted to the development of new catalysts for the gas-phase reduction of furfural into furfuryl alcohol in the presence of hydrogen. − The main challenge of this reaction is related to the activity of the catalyst, which has to be finely tuned to reduce the aldehyde moiety of furfural only. Catalytic sites endowed with an overly high reducing ability are also prone to further reduce furfuryl alcohol ( 99 ) into 2-methylfuran ( 101 ), tetrahydrofurfuryl alcohol ( 102 ), and 2-methyltetrahydrofuran ( 103 ) (Scheme ) as well as many other undesired compounds resulting from ring-opening.…”

Section: Upgrading Of Furansmentioning

confidence: 99%

Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass

et al. 2020

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The ever increasing industrial production of commodity and specialty chemicals inexorably depletes the finite primary fossil resources available on Earth. The forecast of population growth over the next 3 decades is a very strong incentive for the identification of alternative primary resources other than petro-based ones. In contrast with fossil resources, renewable biomass is a virtually inexhaustible reservoir of chemical building blocks. Shifting the current industrial paradigm from almost exclusively petro-based resources to alternative bio-based raw materials requires more than vibrant political messages; it requires a profound revision of the concepts and technologies on which industrial chemical processes rely. Only a small fraction of molecules extracted from biomass bears significant chemical and commercial potentials to be considered as ubiquitous chemical platforms upon which a new, bio-based industry can thrive. Owing to its inherent assets in terms of unique process experience, scalability, and reduced environmental footprint, flow chemistry arguably has a major role to play in this context. This review covers a selection of C2 to C6 bio-based chemical platforms with existing commercial markets including polyols (ethylene glycol, 1,2-propanediol, 1,3-propanediol, glycerol, 1,4-butanediol, xylitol, and sorbitol), furanoids (furfural and 5-hydroxymethylfurfural) and carboxylic acids (lactic acid, succinic acid, fumaric acid, malic acid, itaconic acid, and levulinic acid). The aim of this review is to illustrate the various aspects of upgrading bio-based platform molecules toward commodity or specialty chemicals using new process concepts that fall under the umbrella of continuous flow technology and that could change the future perspectives of biorefineries.

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Section: Upgrading Of Furansmentioning

confidence: 99%

Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass

et al. 2020

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“…Furfural, as an important platform intermediate derived from plants rich in glucose and xylose, can be converted to a variety of chemicals owing to its active heteroaromatic furan ring and aldehyde functional group. [1][2][3][4] 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.…”

Section: Introductionmentioning

confidence: 99%

“…The development of new effective catalysts for conversion of biomass‐derived platform molecules to value‐added chemicals has attracted much attention due to the depleting of fossil fuels and increased environmental concern. Furfural, as an important platform intermediate derived from plants rich in glucose and xylose, can be converted to a variety of chemicals owing to its active heteroaromatic furan ring and aldehyde functional group 1–4 . Tetrahydrofurfuryl alcohol (THFL) is an environmentally friendly solvent and chemical intermediate in industrial and agricultural fields 5,6 .…”

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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“…Process intensification schemes can always be pursued for higher performance of the established technologies throughout the chemical industry [19][20][21][22][23][24][25][26][27]. Although the bioleaching process is beneficial for climate change mitigation, the slow kinetics of the reactions in this process has to be improved for successful implementation [17], which in turn requires the optimization of the process with respect to the influencing parameters [28].…”

Section: Introductionmentioning

confidence: 99%

Kinetics of different bioreactor systems with Acidithiobacillus ferrooxidans for ferrous iron oxidation

Yavari

Ebrahimi

Aghazadeh

et al. 2019

Reac Kinet Mech Cat

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The relative performance of two biofilm-based airlift reactors using different kinds of packing materials and one fixed bed biofilm reactor with a homemade packing material of high specific area (~ 1000 m 2 /m 3) was addressed. The bioreactors operated under ferrous iron loading rates in the range of 8-120 mol Fe(II)/m 3 h. Acidithiobacillus ferrooxidans cells immobilized in the three bioreactors afforded the reactions for an extended period of 120 days of continuous operation at the dilution rates of 0.2, 0.4, 0.7, 1 and 1.2 h −1. The maximum ferrous iron oxidation rates achieved in this study at a hydraulic residence time of 1.2 h were about 91, 68 and 51 mol Fe(II)/ m 3 h for the fixed bed, airlift1, and airlft2 bioreactors. The performance data from the fixed-bed bioreactor offered a higher potential for ferrous iron oxidation because of fast biofilm development, the formation of a thick biofilm, and lower sensitivity to shear, which enhanced the startup time of the bioreactor and the higher reactor productivity. Proper kinetic models were also presented for both the startup period and the steady-state process.

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Preparation of Cu-MgO catalysts with different copper precursors and precipitating agents for the vapor-phase hydrogenation of furfural

Cited by 25 publications

References 43 publications

Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass

Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass

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

Kinetics of different bioreactor systems with Acidithiobacillus ferrooxidans for ferrous iron oxidation

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Preparation of Cu-MgO catalysts with different copper precursors and precipitating agents for the vapor-phase hydrogenation of furfural

Cited by 25 publications

References 43 publications

Continuous Flow Upgrading of Selected C2–C6Platform Chemicals Derived from Biomass

Continuous Flow Upgrading of Selected C2–C6Platform Chemicals Derived from Biomass

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

Kinetics of different bioreactor systems with Acidithiobacillus ferrooxidans for ferrous iron oxidation

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Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass

Continuous Flow Upgrading of Selected C₂–C₆Platform Chemicals Derived from Biomass