Chapter 7. Routes to Methacrylic Acid <i>via</i> Partial Oxidation

Schunk, Stephan A.; Brem, Nadine

doi:10.1039/9781847559876-00169

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“…PMMA is ance when compared with other synthetic resins [3]. The demand for PMMA has been reported to surpass 2.8 million tons per year, and it is expected to grow constantly with the increment of more than 0.2 million tons every year [4]. Undoubtedly, the high demand for PMMA in the market has boosted the production capacity of MMA, and this has caused the price of bulk MMA to be rose by around 10% annually.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Study of One-step Production from Isobutene to Methyl Methacrylate

Lau

Lai

et al. 2022

Bull. Chem. React. Eng. Catal.

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Methyl methacrylate (MMA) has emerged as an essential industrial monomer. However, the toxic by-production and shortage supply of MMA in the global market has gained great attention. Herein, a one-step synthesis to produce MMA from isobutene via a direct oxidative esterification process has been demonstrated to curb the aforementioned downsides. Thermodynamic analysis via Gibbs free energy minimization method proved the feasibility of this route via the equilibrium constant. Despite tert-butanol and isobutane showed higher equilibrium constant than isobutene, they should be avoided. Isobutane is highly flammable while the precursor of tert-butanol is exorbitant. Thus, isobutene was selected for the equilibrium compositions screening. Isobutene conversion was 90% and 15% MMA yield at 700 °C and IBN: O2: MeOH ratio with 1:7:1. This route is mainly limited by the generation of side reactions from the reaction of CH3OH and O2. By varying the feedstock ratio at 1:2:1, the MMA yield increased to ~25%. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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Section: Introductionmentioning

confidence: 99%

Thermodynamic Study of One-step Production from Isobutene to Methyl Methacrylate

Lau

Lai

et al. 2022

Bull. Chem. React. Eng. Catal.

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Oxidation

Teles

Hermans

Franz³

et al. 2015

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Overview of industrial oxidation processes 2.1. Inorganic chemicals 2.1.1. Sulfur derivatives 2.1.2. Carbon derivatives 2.1.3. Nitrogen derivatives 2.1.4. Chlorine derivatives 2.2. Organic chemicals 2.2.1. Olefins and alkynes 2.2.2. Epoxides 2.2.3. Hydroperoxides 2.2.4. Alcohols 2.2.5. Aldehydes 2.2.6. Ketones 2.2.7. Phenols and derivatives 2.2.8. Carboxylic acids, saturated 2.2.9. Carboxylic acids and anhydrides, unsaturated 2.2.10. Carboxylic acids and anhydrides, aromatic 2.2.11. Esters, lactones and carbonates 2.2.12. Nitriles 2.2.13. Oxidized nitrogen compounds 2.2.14. Chlorinated compounds 2.2.15. Sulfur compounds 3. Thermodynamics; Stability of Hydrocarbons 4. Reaction Types 5. Homolytic Oxidation 5.1. Historical Development; Reaction Mechanism; Radical Reactivity 5.2. Kinetics of Autoxidation 5.3. Differences between Liquid‐ and Gas‐Phase Autoxidations 5.4. Homolytic Oxidation in the Liquid Phase 5.4.1. Secondary Reactions of Radicals, Peroxides, and other Intermediates 5.4.2. Metal Catalysis in Homolytic Liquid‐Phase Oxidation 5.4.3. Inhibitors of Homolytic Liquid‐Phase Oxidation 5.4.4. Special Cases of Homolytic Oxidation 5.4.5. Process Technology of Homolytic Liquid‐Phase Oxidation 5.5. Homolytic Gas‐Phase Oxidation 5.6. Gas Explosions and Safety Data 6. Heterolytic Oxidation 6.1. Heterolytic Oxidation in the Liquid Phase 6.2. Heterogeneously Catalyzed Gas‐Phase Oxidation 6.2.1. Oxidation Catalysts 6.2.2. Process Technology of Heterogeneously Catalyzed Oxidations

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Oxidation–Oxygenation

2017

Hydrocarbon Chemistry, Two Volume Set

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Chapter 7. Routes to Methacrylic Acid via Partial Oxidation

Cited by 3 publications

References 0 publications

Thermodynamic Study of One-step Production from Isobutene to Methyl Methacrylate

Thermodynamic Study of One-step Production from Isobutene to Methyl Methacrylate

Oxidation

Oxidation–Oxygenation

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