Selective reduction of acetic acid to ethanol over novel Cu2In/Al2O3 catalyst

Onyestyák, György; Harnos, Szabolcs; Klébert, Szilvia; Štolcová, Magdaléna; Kaszonyi, Alexander; Kalló, D.

doi:10.1016/j.apcata.2013.05.042

Cited by 42 publications

(20 citation statements)

References 22 publications

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“…Additionally, the Ni-In alloy and intermetallic compound have been proved to be good catalysts for the hydrogenation of the carboxylic acid to alcohol [23,24,25,26,27]. However, to the best of our knowledge, there have been no reports about the hydrogenation of acetylene on the Ni-In bimetallic catalysts.…”

Section: Introductionmentioning

confidence: 94%

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Chen

2016

Applied Surface Science

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Section: Introductionmentioning

confidence: 94%

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Chen

2016

Applied Surface Science

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“…In the development of improved catalysts, multiple metals, supports and reaction conditions were evaluated for acetic acid hydrodeoxygenation. For example, in addition to traditional sulfided Ni and Mo‐based catalysts, numerous other metal compositions were studied, including Pt, Mo metal and carbide, Ce, Fe, Mn, Ru, Rh, Pd, Ir, and Cu . Addition of a second metal can usually improve either catalytic activity or selectivity.…”

Section: Figurementioning

confidence: 99%

Catalytic Platinum Nanoparticles Decorated with Subnanometer Molybdenum Clusters for Biomass Processing

Zheng

Tang

Podkolzin

2020

Chemistry A European J

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The development of improved technologies for biomass processing into transportation fuels and industrial chemicals is hindered due to al ack of efficient catalysts for selectiveo xygen removal.H ere we report that platinum nanoparticles decorated with subnanometer molybdenum clusters can efficiently catalyzeh ydrodeoxygenation of acetica cid, which serves as am odel biomass compound. In contrast with monometallic Mo catalysts that are inactive and monometallic Pt catalysts that have low activities and selectivities, bimetallic Pt-Mo catalysts exhibit synergistic effects with high activities and selectivities. The maximum activity occurs at aP tt oM om olar ratio of three. Although Mo atoms themselvesa re catalytically inactive, they serve as preferentialb inding anchors for oxygen atoms while ac atalytic transformation proceeds on neighboring surfaceP ta toms. Beyond biomass processing, Pt-Mo nanoparticles are promisingc atalysts for aw ide variety of reactionst hat requireatransformation of molecules with an oxygen atom and, more broadly, in other fieldso fs cience and technology that require tuning of surface-oxygen interactions.Promising new technologiesf or biomassc onversion into fuels and chemical feedstocks rely on production of bio-oils, which need to be upgraded to removeo xygen-containing hydrocarbons (oxygenates) andw ater. [1] In contrast with fossil fuels that are usually contaminatedw ith sulfur and nitrogen-containing compounds but are free of oxygenates,a ll biomass contains oxygen. Removalo fo xygenates is required because ah igh oxygen concentration makes bio-oils acidic and corrosive, unstable during storage, and less energetically valuable per unit weightt han petroleum-derived hydrocarbons. Althoughe fficient pyrolysis and liquefaction processes have been recently developed for the production of bio-oils,o xygen removal from these bio-oils remains challenging. Current technologies for removingo xygen in the presence of hydrogen (hydrodeoxygenation) rely mostly on traditionalp etroleum refining catalysts, which are not optimizedf or biomass processing and, as a result, suffer from insufficienta ctivity, selectivitya nd stability. More efficientu pgrading technologiesa re, therefore, needed for the developmento fs ustainable energy and chemical resources. [1b, d-f] Among major oxygenate types in bio-oils, carboxylic acids are some of the most challenging because their hydrodeoxygenationr ates are usuallya no rder of magnitudel ower. [2] Therefore, acetic acid, the simplest carboxylic acid, is often used as am odel compound in the development of new hydrodeoxygenation processes. [2a,c, 3] Furthermore, acetic acid itself is as ignificant component of bio-oils with ac oncentration from typically5 -8 wt % [1d, 4] to as high as 32 wt %, depending on the type of the initial biomass. [5] In the development of improved catalysts, multiple metals, supports and reaction conditions were evaluated for acetic acid hydrodeoxygenation. For example, in additiont ot raditionals ulfidedN ia nd Mo-based ca...

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“…Many bimetallic formulations stand out as superb candidates for partial reduction of light acids. For example, addition of indium oxide to Cu and Ni catalysts leads to the formation of metallic indium and intermetallic compounds (Cu 2 In, Ni 2 In) that are more active and selective for hydrogenation of acetic acid to ethanol ,,. Pt addition to Fe/SiO 2 increased the TOFs by one to two orders of magnitude, and lowered the apparent activation energy for the overall conversion of acetic acid .…”

Section: Hydrogenolysis and Hydrogenation Of Small Mono‐oxygenatesmentioning

confidence: 99%

Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H₂‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts

Shi

2019

ChemCatChem

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Hydrodeoxygenation (HDO) is a key step in upgrading of biomass‐derived feedstocks to fuels and valuable chemicals. In this review, I select to discuss the current understanding of heterogeneous HDO catalysis of representative small oxygenates that are present in the bio‐crude obtained from thermochemical conversions of biomass raw materials, as the efficient valorization of these presently underutilized carbon sources would significantly improve carbon recovery and the overall process techno‐economics, in addition to facilitating downstream processing in some cases. A primary focus is laid on the kinetics, mechanisms and active site requirements of molecular H2‐involved hydrogenation and deoxygenation reactions of small aliphatic oxygenates. More often than not, surprising contrasts are found between gas‐solid and polar liquid‐solid interfaces and hint toward substantial restructuring and modifications of the catalytic surfaces and chemistries in polar liquids, particularly induced by protic molecules (the most abundant being water). Knowledge gaps, uncharted territories and associated challenges for the interrogations of these fundamental aspects are also discussed in this review.

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Selective reduction of acetic acid to ethanol over novel Cu2In/Al2O3 catalyst

Cited by 42 publications

References 22 publications

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Catalytic Platinum Nanoparticles Decorated with Subnanometer Molybdenum Clusters for Biomass Processing

Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H₂‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts

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Selective reduction of acetic acid to ethanol over novel Cu2In/Al2O3 catalyst

Cited by 42 publications

References 22 publications

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Selective hydrogenation of acetylene on SiO2 supported Ni-In bimetallic catalysts: Promotional effect of In

Catalytic Platinum Nanoparticles Decorated with Subnanometer Molybdenum Clusters for Biomass Processing

Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H2‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts

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Valorization of Biomass‐derived Small Oxygenates: Kinetics, Mechanisms and Site Requirements of H₂‐involved Hydrogenation and Deoxygenation Pathways over Heterogeneous Catalysts