Evolution des especes carboxylates dans le cadre des syntheses CO-H2. II. Promotion de la formation d'especes acetetates par le choix de supports, de l'alcalinisation et de combinaisons bimetalliques sur systemes Co, Cu, Fe

Kiennemann, A.; Farkhani, D.; Deluzarche, A.; Cressely, J.

doi:10.1016/0254-0584(85)90071-9

Cited by 3 publications

(3 citation statements)

References 5 publications

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“…Although some previous old literatures reported that Co‐based catalysts have some potential for the hydrogenation of carboxylic acids, Co‐based catalysts were not taken notice because of the low activity. Recently, non‐noble metal‐based catalysts have attracted much attention as the alternatives for noble metals because of the high demand for extrication of use of noble metals.…”

Section: Heterogeneous Monometallic Catalystsmentioning

confidence: 99%

Recent Developments of Heterogeneous Catalysts for Hydrogenation of Carboxylic Acids to their Corresponding Alcohols

2020

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Hydrogenation of carboxylic acids is an important organic reaction for the synthesis of alcohols, aldehydes, alkanes, and so on. Selective hydrogenation of carboxylic acids to alcohols is particularly important because alcohols are useful and valuable chemicals. However, the hydrogenation of carboxylic acids is difficult due to the low reactivity of the carboxy group and the acidic property, which require rational design of catalysts. Up to now, various effective homogeneous and heterogeneous catalysts have been intensively developed, and remarkable advances have been made in heterogeneous catalysts. In this minireview, recent progress (2010 and after) on the development of heterogeneous catalysts for hydrogenation of carboxylic acids to alcohols, particularly for monocarboxylic acids to mono primary alcohols, is reviewed. The reported literatures were categorized in terms of catalyst systems, such as monometallic catalysts and bimetallic catalysts. The characteristics, particularly the structure of active sites, reaction mechanism and stability, were introduced.

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Section: Heterogeneous Monometallic Catalystsmentioning

confidence: 99%

Recent Developments of Heterogeneous Catalysts for Hydrogenation of Carboxylic Acids to their Corresponding Alcohols

2020

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“…Among cheaper, non-precious metal hydrogenating agents (Cu and Ni studied recently profoundly) cobalt is also highly efficient in some important dispersed on an inert silica support, and Co loaded on various supports or using bimetallic combinations of the mentioned metals. 11,12 Their results showed that Cu/SiO 2 was active and quite selective for the production of ethanol, acetaldehyde and ethyl-acetate through consecutive reduction of acetic acid, whereas Fe/SiO 2 resulted in the production of acetone and CO 2 following the ketonization reaction route. However over Co/SiO 2 , dominantly decomposition products (CH 4 and CO 2 ) were obtained.…”

Section: Introductionmentioning

confidence: 99%

Bioacid Hydroconversion over Co, Ni, Cu Mono- and Indium-doped Bimetallic Catalysts

Onyestyák

Harnos

Kalló

2015

ACSi

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Caprylic acid (CA) as model reactant was selectively reduced in a flow-through reactor in hydrogen stream at 21 bar total pressure and 240-360°C over alumina loaded with the adjacent Co, Ni, Cu host and In guest metals. The main target of this research is the recognition of efficient cobalt catalysts for carboxylic group hydroconversion compared to more familiar nickel and copper composites. The catalysts were activated in H 2 flow at 21 bar and 450°C. By variation of main metal or modification with indium, mono-or bimetallic catalysts can be obtained with low hydrodecarbonylation activity and high alcohol selectivity. These composites have higher hydrodeoxygenation (HDO) activity and alcohol selectivity than the conventional commercial catalysts applied for fatty alcohol production. Great variety of catalytic behavior indicates complexity of the surface reactions determined by several interacting factors.

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“…Among cheaper non noble metal hydrogenating agents (Cu and Ni) the adjacent cobalt in the periodic table is also highly efficient in some important H 2 activating processes. Cressely et al studied acetic acid hydrogenation at atmospheric pressure over Fe, Co or Cu dispersed on an inert silica support [22], and Co loaded on various supports or using bimetallic combinations of the mentioned metals [23]. Their results showed that Cu/ SiO 2 was active and quite selective for the production of ethanol, acetaldehyde and ethyl acetate through consecutive reduction of acetic acid, whereas Fe/SiO 2 resulted in the production of acetone and CO 2 following the ketonization reaction route.…”

mentioning

confidence: 99%

Non-precious Metal Catalysts for Acetic Acid Reduction

Onyestyák

2017

Period. Polytech. Chem. Eng.

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Evolution des especes carboxylates dans le cadre des syntheses CO-H2. II. Promotion de la formation d'especes acetetates par le choix de supports, de l'alcalinisation et de combinaisons bimetalliques sur systemes Co, Cu, Fe

Cited by 3 publications

References 5 publications

Recent Developments of Heterogeneous Catalysts for Hydrogenation of Carboxylic Acids to their Corresponding Alcohols

Recent Developments of Heterogeneous Catalysts for Hydrogenation of Carboxylic Acids to their Corresponding Alcohols

Bioacid Hydroconversion over Co, Ni, Cu Mono- and Indium-doped Bimetallic Catalysts

Non-precious Metal Catalysts for Acetic Acid Reduction

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