One-step synthesis of 2,5-dihydroxyterephthalic acid by the oxidation of p -xylene over M-MCM-41 (M = Fe, Fe/Cu, Cu) catalysts

Li, Ying; Duan, Deliang; Wu, Mingzhu; Li, Junjie; Yan, Zhiying; Wang, Wei; Zi, Guoli; Wang, Jiaqiang

doi:10.1016/j.cej.2016.08.017

Cited by 15 publications

(9 citation statements)

References 36 publications

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“…We have focused on MOFs with relatively common metal types for simplicity. Specifically, from analyzing the CoRE MOF database, the 10 most common metal types are chosen Zn(473), Cu(309), Cd(270), Co(240), Mn(146), Ni(111), Fe(50), Mg (34), Ca (32), and Cr (17). Because the LCI data for Cd/CdO and Cr/CrO are unavailable in the Ecoinvent v2.2 database, they are not considered.…”

Section: ■ Methodologymentioning

confidence: 99%

“…In most cases, we can only find the LCI data of their secondary precursors, which are more available in the Ecoinvent v2.2 database, to achieve the LCI analysis. Specifically, p-xylene is used as the secondary precursor with acetic acid and acetonitrile as the solvents to synthesize DHTA per the synthesis protocol reported by Li et al 34 For the metal salt, MgO and HNO 3 are used in the production of Mg(NO 3 ) 2 •6H 2 O. In this study, we have also considered the scale-up of laboratory synthesis processes using the guidelines reported in the study of Piccinno et al 26 A linear scale-up is applied to the reported properties of precursors and the synthesis yields of MOFs and organic ligands.…”

Section: ■ Methodologymentioning

confidence: 99%

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Toward Sustainable Metal–Organic Frameworks for Post-Combustion Carbon Capture by Life Cycle Assessment and Molecular Simulation

Lin

et al. 2021

ACS Sustainable Chem. Eng.

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Metal–organic frameworks (MOFs), an emerging class of materials, have been regarded as highly promising adsorbent materials for carbon capture and sequestration (CCS). To date, most reported studies have mainly focused on evaluating MOF candidates based on their adsorption properties (e.g., selectivity) or their performance using a process model. The overall environmental impact of this emerging new class of materials remains unknown. Several aspects, including the energy load and resource depletion from the MOF production process as well as other steps in the life cycle system of MOF-based CCS, should also be considered. Herein, we assess the impact of a diverse set of approximately 50 MOFs for CCS via life cycle assessment and molecular simulation. Our results identify that, aside from the impact imposed by the CO2 separation process, the use of solvents (i.e., type and amount) in the MOF production process plays a critical role. Particularly, for environmental impacts such as the eutrophication potential, solvent use can be the most significant contributor. Seeking greener alternatives (e.g., methanol and water) and improving their recycle rates are therefore essential. Comparing with the monoethanolamine scrubbing technology, we have also identified several promising structures in this study. The outcomes of this study are instrumental to the future development of novel porous materials.

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Section: ■ Methodologymentioning

confidence: 99%

Section: ■ Methodologymentioning

confidence: 99%

Toward Sustainable Metal–Organic Frameworks for Post-Combustion Carbon Capture by Life Cycle Assessment and Molecular Simulation

Lin

et al. 2021

ACS Sustainable Chem. Eng.

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“…[ 36 , 37 , 38 , 39 , 40 , 41 ] The synthesis of this compound usually requires harsh conditions such as high temperatures and pressures, multiple steps, and non-environmentally and health-friendly reactants; therefore, the search for greener and softer conditions is intense. By using the mesoporous material MCM-41, dopped with copper on a scale of Cu:Si = 1:100, it was possible to achieve a moderate conversion of p- xylene of 21.7% with relatively high selectivity of 73% for the product in question after 5 h of reaction at 80 ° C, using 30% H 2 O 2 as an oxidant, and with acetonitrile and acetic acid in a volume:volume proportion of 7:3 [ 42 ].…”

Section: Catalytic Advancesmentioning

confidence: 99%

p-Xylene Oxidation to Terephthalic Acid: New Trends

Lapa

Martins

2023

Molecules

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Large-scale terephthalic acid production from the oxidation of p-xylene is an especially important process in the polyester industry, as it is mainly used in polyethylene terephthalate (PET) manufacturing, a polymer that is widely used in fibers, films, and plastic products. This review presents and discusses catalytic advances and new trends in terephthalic acid production (since 2014), innovations in terephthalic acid purification processes, and simulations of reactors and reaction mechanisms.

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“…The highest selectivity to terephthalic acid did not exceed 45% at a p-xylene conversion of 10% in the neat acetonitrile. It was found out, that iron additive increased the selectivity to terephthalic acid, whereas copper addition, vice versa, favored the further oxidation of TPA to 2,5-dihydroxy-1,4-terephthalic and p-benzoquinone-2,5-dicarboxylic acids [15].…”

Section: Introductionmentioning

confidence: 99%

“…In the presence of MCM-41 doped with Fe and Cu, terephthalic acid underwent further oxidation to 2,5-dihydroxy-1,4-terephthalic and p-benzoquinone-2,5-dicarboxylic acids even under much milder conditions, than in the AMOCO process (H 2 O 2 as an oxidant, 80 • C, AcOH, CH 3 CN, 5 h) [15]. The highest selectivity to terephthalic acid did not exceed 45% at a p-xylene conversion of 10% in the neat acetonitrile.…”

Section: Introductionmentioning

confidence: 99%

Manganese and Cobalt Doped Hierarchical Mesoporous Halloysite-Based Catalysts for Selective Oxidation of p-Xylene to Terephthalic Acid

et al. 2019

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Bimetallic MnCo catalyst, supported on the mesoporous hierarchical MCM-41/halloysite nanotube composite, was synthesized for the first time and proved its efficacy in the selective oxidation of p-xylene to terephthalic acid under conditions of the AMOCO process. Quantitative yields of terephthalic acid were achieved within 3 h at 200–250 °C, 20 atm. of O2 and at a substrate to the Mn + Co ratio of 4–4.5 times higher than for traditional homogeneous system. The influence of temperature, oxygen, pressure and KBr addition on the catalyst activity was investigated, and the mechanism for the oxidation of p-toluic acid to terephthalic acid, excluding undesirable 4-carboxybenzaldehyde, was proposed.

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One-step synthesis of 2,5-dihydroxyterephthalic acid by the oxidation of p -xylene over M-MCM-41 (M = Fe, Fe/Cu, Cu) catalysts

Cited by 15 publications

References 36 publications

Toward Sustainable Metal–Organic Frameworks for Post-Combustion Carbon Capture by Life Cycle Assessment and Molecular Simulation

Toward Sustainable Metal–Organic Frameworks for Post-Combustion Carbon Capture by Life Cycle Assessment and Molecular Simulation

p-Xylene Oxidation to Terephthalic Acid: New Trends

Manganese and Cobalt Doped Hierarchical Mesoporous Halloysite-Based Catalysts for Selective Oxidation of p-Xylene to Terephthalic Acid

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