Aldehydes, Aliphatic and Araliphatic

Kohlpaintner, Christian W.; Schulte, Markus; Falbe, Jürgen; Lappe, Peter; Weber, J.

doi:10.1002/14356007.a01_321

Cited by 25 publications

(28 citation statements)

References 64 publications

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“…Pelargonic acid is found in the form of esters in the essential oil obtained from geranium and is a natural non-selective herbicide. In contrast, pelargonium aldehyde (nonanal) is a compound found naturally in some essential oils (including cinnamon and rose oil), and is also produced in small amounts by the human body [33] so that it is not only non-toxic but also biocompatible. In addition to the compounds mentioned above, the discussed FTIR spectrum of C15A nanoclay is predominated by water, carbon dioxide and carbon monoxide.…”

Section: C15a Nanoclaymentioning

confidence: 99%

PET Fibers Modified with Cloisite Nanoclay

et al. 2020

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The alternative method of reducing the flammability of polyethylene terephthalate (PET) fibers, analogous to dyeing of PET fibers with dispersed dyes in a high-temperature bath, was proposed. A commercial organophilic montmorillonite Cloisite®15A (C15A) was applied as a flame retardant. The aim of the presented work was to evaluate the effectiveness of the introduced modifier and the improvement of the flame-retardant properties of PET fibers by limiting oxygen index (LOI) and thermogravimetric analysis (TGA) measurements. Evolved gas analysis (EGA) by spectrometric method (FTIR) during coupled thermogravimetric analysis (TGA) was applied in order to confirm no increase in the toxicity of volatile degradation products released from burning modified fibers. The nanocomposite nature of modified fibers was confirmed based on the structural parameters of the fibers determined using wide-angle X-ray scattering (WAXS) and small angle X-ray scattering (SAXS) X-ray diffraction methods.

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Section: C15a Nanoclaymentioning

confidence: 99%

PET Fibers Modified with Cloisite Nanoclay

et al. 2020

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“…[4][5][6] The Guerbet condensation of alcohols is an alternative one-step process for the production of these 2-alkyl alcohols, also referred to as Guerbet alcohols. This reaction is of growing importance in biomass conversion processes as it provides an efficient way for the upgrading of smaller alcohols to heavier branchedchain alcohols with a unique branching pattern.…”

Section: Biomass Sources Of Guerbet Alcoholsmentioning

confidence: 99%

“…Currently, the industrial production of branched-chain higher alcohols is carried out from aldehydes, which are produced by hydroformylation. 4 The aldehydes undergo aldol condensation catalyzed by aqueous NaOH and subsequently are hydrogenated on a transition metal catalyst. 90 30% of the selling price of these Guerbet alcohols is estimated to be caused by purification, recovery and waste treatment due to the homogenous base.…”

Section: Catalysis Science and Technology Minireviewmentioning

confidence: 99%

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization

Gabriëls

Hernández

Sels

et al. 2015

Catal. Sci. Technol.

249

233

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The Guerbet condensation reaction is an alcohol coupling reaction that has been known for more than a century. Because of the increasing availability of bio-based alcohol feedstock, this reaction is of growing importance and interest in terms of value chains of renewable chemical and biofuel production. Due to the specific branching pattern of the alcohol products, the Guerbet reaction has many interesting applications. In comparison to their linear isomers, branched-chain Guerbet alcohols have extremely low melting points and excellent fluidity. This review provides thermodynamic insights and unravels the various mechanistic steps involved. A comprehensive overview of the homogeneous, heterogeneous and combined homogeneous and heterogeneous catalytic systems described in published reports and patents is also given. Technological considerations, challenges and perspectives for the Guerbet chemistry are discussed.

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“…2019, 9, 5061 2 of 14 aldehydes, with an estimated production of 1.5 kton/year via base-catalysed condensation of benzaldehyde and acetaldehyde [17]. The products of hydrogenation of the vinyl (C=C) or carbonyl (C=O) group, hydrocinnamaldehyde (HCAL) or cinnamyl alcohol (COH) respectively, are largely used in the production of various fine chemicals for the pharmaceutical and perfumery industry [17,18]. To selectively hydrogenate either the vinyl or the carbonyl group, several supported noble metal nanoparticles can be used, such as Au, Pd, Pt, Rh, Ru and Ir [19,20].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Carbon Nanofibers Surface Properties in Hydrogenation and Dehydrogenation Reactions

et al. 2019

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In this study, carbon nanofiber-supported Pd nanoparticles were used in the hydrogenation of cinnamaldehyde and in the dehydrogenation of cinnamyl alcohol. The different graphitisation of the surface of the nanofibers and the amount of oxygen functionalisation significantly affected both activity and selectivity to the various reaction products. In particular, a decrease in nanoparticle dimensions and oxygen content resulted in an increase in overall activity for both of the studied reactions. Moreover, the selectivity to hydrocinnamaldehyde enhanced with increasing surface oxygen content in the cinnamaldehyde hydrogenation, while the selectivity to cinnamaldehyde was higher with low-functionalised nanofibers in the cinnamyl alcohol dehydrogenation. Finally, the most active catalyst proved also to be stable in consecutive runs.

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Aldehydes, Aliphatic and Araliphatic

Cited by 25 publications

References 64 publications

PET Fibers Modified with Cloisite Nanoclay

PET Fibers Modified with Cloisite Nanoclay

Review of catalytic systems and thermodynamics for the Guerbet condensation reaction and challenges for biomass valorization

The Effect of Carbon Nanofibers Surface Properties in Hydrogenation and Dehydrogenation Reactions

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