Highly efficient super activated carbon supported ultra-low loading copper catalyst for the oxidative carbonylation of methanol to dimethyl carbonate

Ren, Xuejing; Quan, Yanhong; Yang, Wen; Zhao, Jinxian; Shi, Ruina; Ren, Jun

doi:10.1016/j.mcat.2022.112694

Cited by 3 publications

(1 citation statement)

References 64 publications

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“…25 The H 2 -TPR plots showed that the addition of alkaline earth metals increased the reduction temperature of Cu species, and with the increase of alkaline earth metal content, the reduction temperature of Cu species increased, and the more difficult Cu was reduced, indicating that the addition of alkaline earth metals increased the interaction force between Cu and the support. Therefore, the Cu species of modified catalyst are more resistant to migrate and aggregate during the reaction process, 26 which is in accordance with the results of the TEM.…”

Section: Resultssupporting

confidence: 82%

Alkaline earth modified activated carbon supported Cu catalysts with enhanced selectivity in the hydrogenation of dimethyl oxalate to methyl glycolate

Rong,

Shen,

Fang

2024

RSC Adv.

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Section: Resultssupporting

confidence: 82%

Alkaline earth modified activated carbon supported Cu catalysts with enhanced selectivity in the hydrogenation of dimethyl oxalate to methyl glycolate

Rong,

Shen,

Fang

2024

RSC Adv.

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Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

Wang,

Meng,

Ding

et al. 2024

Applied Organom Chemis

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The oxidative carbonylation of methanol to synthesize dimethyl carbonate (DMC) has been extensively studied over Cu‐based catalysts, but the activity and selectivity are not high. The Co catalysts exhibit high DMC selectivity, but the difficulty in recycling homogeneous Co catalyst and the low conversion of heterogeneous Co catalyst limit the application of Co catalysts. Here, the core–shell ZIFs materials were synthesized and carbonized to obtain solid core–shell cobalt catalysts, and then the catalytic performance for methanol conversion to DMC was investigated. The CoNC@NC catalyst, carbonized from Z67@Z8 with Z67 as the core and Z8 as the shell, shows that the carbonized NC shell effectively suppressed the aggregation of Co NPs and the Co NPs were only 15.4 nm, which was much smaller than those of NC@CoNC (34.5 nm) and CoNC (48.1 nm) catalysts. Compared with the CoNC catalyst, CoNC@NC significantly improved the pulse chemisorption of CH3OH and CO, leading to a significant increase in methanol conversion from 6.9% to 17.1%. Furthermore, the deactivation rate of the CoNC@NC catalyst (22.8%) was much lower than that of CoNC (59.4%) after five reaction cycles. The results of this work provide a new strategy for the design and preparation of solid cobalt catalysts for the oxidative carbonylation of methanol to DMC.

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An Intensified Green Process for the Coproduction of DMC and DMO by the Oxidative Carbonylation of Methanol

et al. 2022

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Dimethyl carbonate (DMC) is an eco-friendly and sustainable compound with widespread industrial applications. Various extensive routes have been exploited in the chemical industry to produce DMC. However, these routes have several environmental and energy drawbacks. In this study, a promising novel industrial scheme for the synthesis of DMC via the oxidative carbonylation of vaporized methanol with dimethyl oxalate (DMO) as a byproduct is investigated. A methanol conversion of 81.86% and a DMC selectivity of 83.47% were achieved using an isothermal fixed-bed reactor at 130 °C. The DMC is withdrawn at a purity of >99 mol% via pressure-swing azeotropic distillations. Heat integration was performed to optimize energy consumption, reducing the energy requirements by 28%. An economic evaluation was performed for estimating the profitability via cash-flow diagrams, predicting a payback period of 3.7 years. The proposed green process exhibits several benefits, including high profitability and being environmentally friendly. It also eliminates the use or production of hazardous materials, and it enhances safety characteristics.

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Highly efficient super activated carbon supported ultra-low loading copper catalyst for the oxidative carbonylation of methanol to dimethyl carbonate

Cited by 3 publications

References 64 publications

Alkaline earth modified activated carbon supported Cu catalysts with enhanced selectivity in the hydrogenation of dimethyl oxalate to methyl glycolate

Alkaline earth modified activated carbon supported Cu catalysts with enhanced selectivity in the hydrogenation of dimethyl oxalate to methyl glycolate

Highly active and selective ZIF‐derived cobalt catalyst for methanol conversion to dimethyl carbonate

An Intensified Green Process for the Coproduction of DMC and DMO by the Oxidative Carbonylation of Methanol

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