Methacrylic acid by carboxylation of propene with CO2 over POM catalysts — Reality or wishful thinking?

Rajagopalan, Prasanna; Kühnle, Maximilian; Polyakov, Mykola; Müller, Karsten; Arlt, Wolfgang; Kruse, Daniela; Brückner, Angelika; Bentrup, Ursula

doi:10.1016/j.catcom.2014.01.019

Cited by 3 publications

(4 citation statements)

References 14 publications

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“…76 Unfortunately, the veracity of these results has been questioned, since Bentrup and co-workers tried to reproduce them without obtaining any conversion. 77 According to their study, the in situ FTIR spectroscopy reveals the chemisorption of CO 2 as carbonate species on the surface of supported POM catalysts. However, these carbonates do not react with propene.…”

Section: From Propylene To Methacrylic Acidmentioning

confidence: 99%

“…These tentative results have been improved by modifying the polymetallic oxygen salts, the best results being obtained with PW 11 Ni/TiO 2 , with 12.6% of propene conversion and a MMA selectivity of 95% 76 . Unfortunately, the veracity of these results has been questioned, since Bentrup and co‐workers tried to reproduce them without obtaining any conversion 77 . According to their study, the in situ FTIR spectroscopy reveals the chemisorption of CO 2 as carbonate species on the surface of supported POM catalysts.…”

Section: Liquid Phase Carboxylation Of Unsaturated Molecules Using Or...mentioning

confidence: 99%

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Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers

2022

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Research advances in carboxylation reactions using CO 2 and light organic molecules of renewable origin are reviewed in this work, especially considering chemical catalytic approaches. Carboxylation, one of the most promising carbon capture and utilization (CCU) technologies, has a double environmental benefit, reducing greenhouse gas emissions by developing sustainable processes for commodity synthesis. The industrial interest is based on its potential use in the synthesis of biopolymer precursors from bioplatform molecules such as ethanol or furfural. Acrylic acid is obtained from ethylene (after ethanol dehydration), by a liquid phase reaction activated by organometallic catalysts. Promising yields are reported for different ligands and solvents, but a practical and sustainable implementation of these reactions is still challenging. On the other hand, the furoic acid carboxylation (furoic acid obtained by oxidation of furfural) is a solid-gas reaction that produces 2,5furandicarboxylic acid in presence of alkaline carbonates. In this case, the economic feasibility is the main bottleneck to solve for scaling-up, and efforts should be focused on substituting the most active alkaline carbonate (Cs) by more available alternatives.

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Section: From Propylene To Methacrylic Acidmentioning

confidence: 99%

Section: Liquid Phase Carboxylation Of Unsaturated Molecules Using Or...mentioning

confidence: 99%

Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers

2022

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“…The method provides high extraction efficiency at low cost. Very recently, Rajagopalan 11 12 et al They studied the thermal stability, structural, and textural properties of catalysts. Cavani 13 et al have done a wide extensive study of the main aspects of the reaction, which include reactivity of Keggin-type (POMs), the POM requirements, reduction level of the POM, and, the generation of the active sites in the reaction environment.…”

Section: Introductionmentioning

confidence: 99%

“…The method provides high extraction efficiency at low cost. Very recently, Rajagopalan et al studied production of MAA via heterogeneous selective gas-phase oxidation of propene by CO 2 . They concluded that lattice oxygen from the polyoxometalates (POM) catalysts (Keggin type (POM) Ni 3 [PW 12 O 40 ] 2 and Ni 3 [PMo 12 O 40 ] 2 ) acted as oxidizing agent.…”

Section: Introductionmentioning

confidence: 99%

Recovery of Methacrylic Acid from the Aqueous Phase Using Trioctylmethylammonium Chloride (TOMAC) in Different Diluents

2016

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Methacrylic acid and its derivatives are used in the manufacture of important industrial polymeric products. They have a variety of industrial applications including plastics, thickening agents, surfactants, and chelating agents, etc. In the present work, equilibrium extraction of methacrylic acid is carried out to recover it from aqueous solution. A quaternary ammonium salt, trioctylmethylammonium chloride (TOMAC), is used along with different diluents which belong to different categories. These include isoamyl alcohol, n-butyl acetate, methyl isobutyl ketone (MIBK), toluene, carbon tetrachloride, rice bran oil, and kerosene. Parameters such as distribution coefficients, extraction efficiency, loading ratio, stoichiometric loading ratios, and the equilibrium complexation constants are reported. In both physical and chemical extraction processes, MIBK, being proton−accepting, provides maximum extraction efficiency. The values of equilibrium complexation constant of the TOMAC−diluent systems studied decrease in the following order: rice bran oil > carbon tetrachloride > butyl acetate > toluene > kerosene > MIBK > isoamyl alcohol.

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Selective Oxidation of Isobutane to Methacrylic Acid by Metal-Substituted Ammonium Salts of Molybdovanadophosphoric Acid

Xue

Chu

et al. 2021

Catal Lett

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Methacrylic acid by carboxylation of propene with CO2 over POM catalysts — Reality or wishful thinking?

Cited by 3 publications

References 14 publications

Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers

Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers

Recovery of Methacrylic Acid from the Aqueous Phase Using Trioctylmethylammonium Chloride (TOMAC) in Different Diluents

Selective Oxidation of Isobutane to Methacrylic Acid by Metal-Substituted Ammonium Salts of Molybdovanadophosphoric Acid

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Methacrylic acid by carboxylation of propene with CO2 over POM catalysts — Reality or wishful thinking?

Cited by 3 publications

References 14 publications

Carboxylation reactions for integrating CO2 capture with the production of renewable monomers

Carboxylation reactions for integrating CO2 capture with the production of renewable monomers

Recovery of Methacrylic Acid from the Aqueous Phase Using Trioctylmethylammonium Chloride (TOMAC) in Different Diluents

Selective Oxidation of Isobutane to Methacrylic Acid by Metal-Substituted Ammonium Salts of Molybdovanadophosphoric Acid

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Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers

Carboxylation reactions for integrating CO₂ capture with the production of renewable monomers