Study on catalytic performance and kinetics of high efficiency CeO2 catalyst prepared by freeze drying for the synthesis of dimethyl carbonate from CO2 and methanol

Liu, Haiou; Zhu, Daoyun; Jia, Bo; Yong, Hu; Cheng, Yingliang; Luo, Xiao; Liang, Zhiwu

doi:10.1016/j.ces.2022.117614

Cited by 25 publications

(6 citation statements)

References 48 publications

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“…The yield of DMC increases with the increase in the spin electron number of Ce 3+ , indicating that the oxygen vacancy content plays an important role in the yield of DMC. The analysis results of the oxygen vacancies by TGA, Raman spectroscopy, and EPR are consistent with the XPS conclusions in our previous work …”

Section: Resultssupporting

confidence: 91%

“…The analysis results of the oxygen vacancies by TGA, Raman spectroscopy, and EPR are consistent with the XPS conclusions in our previous work. 35 DFT calculations show that the (110) surface of the ceria catalyst has better catalytic activity than the (111) surface, and the higher oxygen vacancy content on the same crystal surface has better catalytic activity. The experimental results show that the rod-shaped ceria catalyst can expose more (110) surface and better catalytic activity than nanoparticles.…”

Section: Effect Of Oxygen Vacancy Content On Catalyst Activitymentioning

confidence: 98%

“…Effect of the Crystal Surface on Catalyst Activity. Based on our previous research conclusions, 35 we further optimized the experimental conditions and thoroughly studied the relationship between the active crystal surface, oxygen vacancy content, and catalyst activity. The catalytic performance under different experimental conditions is shown in Table 4.…”

Section: Roles Of Oxygen Vacancy In This Catalyticmentioning

confidence: 99%

“…According to our previous work, the CeO 2 catalyst with high oxygen vacancy content obtained by freeze-drying promoted the synthesis of DMC from CO 2 and methanol. However, there is no clear understanding of the detailed mechanism of the synthesis of DMC from CO 2 and methanol on CeO 2 .…”

Section: Introductionmentioning

confidence: 96%

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Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment

Zhu

Liu

Yong

et al. 2022

Ind. Eng. Chem. Res.

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Rare earth metal oxides are known to have good catalytic effectiveness in the direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol. In this work, we screened ceria (CeO2) catalysts by analyzing their capacity for CO2 adsorption. The effects of the crystal surface morphology and oxygen vacancy on the catalytic performance of the ceria catalyst were studied by using density functional theory (DFT). The results show that the (110) surface and higher oxygen vacancy content can better promote the synthesis of DMC and that the rod-shaped CeO2 catalyst has a better catalytic effect. The oxygen vacancy content on the catalyst was improved by freeze-drying and confirmed by thermogravimetric analysis, Raman spectroscopy, and electron paramagnetic resonance. The freeze-dried CeO2 (CeO2-FD) then showed a higher catalytic performance. The conversion rate of methanol and the yield of DMC were 33.95% and 584 mmol g–1cat, respectively, under mild conditions (140 °C and 1 MPa).

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Section: Resultssupporting

confidence: 91%

Section: Effect Of Oxygen Vacancy Content On Catalyst Activitymentioning

confidence: 98%

Section: Roles Of Oxygen Vacancy In This Catalyticmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment

Zhu

Liu

Yong

et al. 2022

Ind. Eng. Chem. Res.

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“…Different implementations of these processes are described, extending through various catalysts and plant engineering, including continuous-flow techniques [ 51 , 52 ]. Organic carbonates can, in principle, be prepared from CO 2 , however, aside from promising research advancements [ 53 , 54 ], no industrial process is currently available, possibly due to known issues such as process reversibility and hydrolytic instability of the product [ 55 ].…”

Section: Introductionmentioning

confidence: 99%

Upgrading of Biobased Glycerol to Glycerol Carbonate as a Tool to Reduce the CO2 Emissions of the Biodiesel Fuel Life Cycle

et al. 2022

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With regards to oil-based diesel fuel, the adoption of bio-derived diesel fuel was estimated to reduce CO2 emissions by approximately 75%, considering the whole life cycle. In this paper, we present a novel continuous-flow process able to transfer an equimolar amount of CO2 (through urea) to glycerol, producing glycerol carbonate. This represents a convenient tool, able to both improve the efficiency of the biodiesel production through the conversion of waste streams into added-value chemicals and to beneficially contribute to the whole carbon cycle. By means of a Design of Experiments approach, the influence of key operating variables on the product yield was studied and statistically modeled.

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Finding the ideal solvent for the analysis of polar analytes using supercritical fluid chromatography

Legelli,

Froning,

Wirtz

et al. 2024

Anal Bioanal Chem

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Study on catalytic performance and kinetics of high efficiency CeO2 catalyst prepared by freeze drying for the synthesis of dimethyl carbonate from CO2 and methanol

Cited by 25 publications

References 48 publications

Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment

Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment

Upgrading of Biobased Glycerol to Glycerol Carbonate as a Tool to Reduce the CO2 Emissions of the Biodiesel Fuel Life Cycle

Finding the ideal solvent for the analysis of polar analytes using supercritical fluid chromatography

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Study on catalytic performance and kinetics of high efficiency CeO2 catalyst prepared by freeze drying for the synthesis of dimethyl carbonate from CO2 and methanol

Cited by 25 publications

References 48 publications

Study of Direct Synthesis of DMC from CO2 and Methanol on CeO2: Theoretical Calculation and Experiment

Study of Direct Synthesis of DMC from CO2 and Methanol on CeO2: Theoretical Calculation and Experiment

Upgrading of Biobased Glycerol to Glycerol Carbonate as a Tool to Reduce the CO2 Emissions of the Biodiesel Fuel Life Cycle

Finding the ideal solvent for the analysis of polar analytes using supercritical fluid chromatography

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Product

Resources

About

Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment

Study of Direct Synthesis of DMC from CO₂ and Methanol on CeO₂: Theoretical Calculation and Experiment