☆ 4.4 Article

Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over H3PW12O40/CeXZr1-XO2 catalysts: Effect of acidity of the catalysts

KOREAN JOURNAL OF CHEMICAL ENGINEERING (2011)

期刊

KOREAN JOURNAL OF CHEMICAL ENGINEERING

卷 28, 期 7, 页码 1518-1522

出版社

KOREAN INSTITUTE CHEMICAL ENGINEERS

DOI: 10.1007/s11814-011-0020-x

关键词

Dimethyl Carbonate; Methanol; Carbon Dioxide; Heteropolyacid; Ceria-zirconia

类别

Chemistry, Multidisciplinary Engineering, Chemical

资金

Korean government (MEST) [2010-0000301]

向作者/读者索取更多资源

Protocol

Reagent

摘要

CeXZr1-XO2 catalysts were prepared by a sol-gel method, and H3PW12O40/CeXZr1-XO2 catalysts were then prepared by an impregnation method. Both catalysts were applied to the direct synthesis of dimethyl carbonate from methanol and carbon dioxide in a batch reactor. NH3-TPD experiments were carried out to investigate the effect of acidity on the catalytic performance of CeXZr1-XO2 and H3PW12O40/CeXZr1-XO2. Catalytic performance of CeXZr1-XO2 and H3PW12O40/CeXZr1-XO2 was closely related to the acidity of the catalysts. The amount of dimethyl carbonate produced over both CeXZr1-XO2 and H3PW12O40/CeXZr1-XO2 catalysts increased with increasing acidity of the catalysts. This indicates that acidity of the catalyst played a key role in determining the catalytic performance of CeXZr1-XO2 and H3PW12O40/CeXZr1-XO2 in the direct synthesis of dimethyl carbonate from methanol and carbon dioxide. Catalytic activity of H3PW12O40/CeXZr1-XO2 was higher than that of the corresponding CeXZr1-XO2. The enhanced catalytic performance of H3PW12O40/CeXZr1-XO2 was attributed to the Bronsted acid sites provided by H3PW12O40.

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.4

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Engineering, Environmental

Dimethyl carbonate (DMC) synthesis from methanol and carbon dioxide in the presence of ZrO2 solid solutions and yield improvement by applying a natural convection circulation system

Qingxin Zheng, Ryo Nishimura, Yoshiyuki Sato, Hiroshi Inomata, Masaki Ota, Masaru Watanabe, Severine Camy

Summary: This study evaluated the effects of different ZrO2 and M/ZrO2 catalysts on the synthesis of dimethyl carbonate from methanol and CO2, and found that the Ce0.1Zr0.9O2 catalyst had the highest yield. The research also showed that there was no significant correlation between catalytic activity and physical properties, but there was a certain relationship with reactivity.

CHEMICAL ENGINEERING JOURNAL (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Dimethyl carbonate synthesis from CO2 and methanol over CeO2: elucidating the surface intermediates and oxygen vacancy-assisted reaction mechanism

Dragos Stoian, Toshiyuki Sugiyama, Atul Bansode, Francisco Medina, Wouter van Beek, Jun-ya Hasegawa, Akira Nakayama, Atsushi Urakawa

Summary: The surface intermediate species and oxygen vacancy-assisted mechanism over CeO2 catalyst in the direct dimethyl carbonate (DMC) synthesis have been investigated using transient spectroscopic methodologies and DFT-based molecular dynamics simulation. The results provide valuable insights into the reaction mechanism and explain the experimental observations.

CHEMICAL SCIENCE (2023)

添加到收藏夹

Article Chemistry, Physical

Investigating the reaction mechanism of dimethyl carbonate synthesis through isotopic labeling experiments

Cecile Daniel, David Farrusseng, Yves Schuurman

Summary: The synthesis of dimethyl carbonate (DMC) from carbon dioxide and methanol was investigated. Oxygen-18 labeled ceria-zirconia did not produce labeled DMC or water, while oxygen-18 labeled methanol primarily resulted in the formation of double labeled DMC. These findings provide insights into the reaction mechanisms and identify the rate-controlling step as the nucleophilic attack of gas phase methanol on surface monomethyl carbonate species to form DMC.

CATALYSIS COMMUNICATIONS (2023)

添加到收藏夹

Article Engineering, Chemical

Direct synthesis of dimethyl carbonate from carbon dioxide and methanol over Ce-BTC-derived CeO2

Zeyu Jiang, Shengying Zhao, Yuhao Yang, Minghui Tan, Guohui Yang, Yisheng Tan

Summary: In this study, a series of Ce-BTC MOF-derived nanorod CeO2 catalysts were prepared for the direct synthesis of DMC from CO2 and methanol. The calcination atmosphere had a great impact on the structure and catalytic properties of the obtained CeO2 catalysts. CeO2 derived from calcination under H2 atmosphere at 500 degrees C exhibited higher specific surface area, oxygen vacancy concentration, and CO2 adsorption capacity, leading to a significantly higher DMC yield compared to commercial nano CeO2 and other prepared catalysts without dehydrating agents.

CHEMICAL ENGINEERING SCIENCE (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Encapsulating phosphotungstic acid within metal-organic framework for direct synthesis of dimethyl carbonate from CO2 and methanol

Keng Xuan, Shikun Chen, Yanfeng Pu, Yaoping Guo, Yadan Guo, Yun Li, Chenxi Pu, Ning Zhao, Fukui Xiao

Summary: In this study, a HPW@MOF-808 catalyst was successfully prepared and demonstrated to have high activity and good stability in the direct synthesis of DMC. The encapsulation of HPW in the micropores of MOF-808 increased its interaction with Zr-6 nodes, resulting in the generation of more acid sites and promoting the formation of methyl cations (rate-determine step in DMC synthesis). Additionally, the encapsulated HPW inhibited leaching during the reaction, leading to better reusability.

JOURNAL OF CO2 UTILIZATION (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

Pt nanoparticles embedded in CeO2 and CeZrO2 catalysts for biogas upgrading: Investigation on carbon removal mechanism by oxygen isotopic exchange and DRIFTS

Andre L. A. Marinho, Raimundo C. Rabelo-Neto, Florence Epron, Nicolas Bion, Fabio B. Noronha, Fabio Souza Toniolo

Summary: The Pt@CeO2 and Pt@CeZrO2 catalysts were found to have a significant impact on the carbon removal mechanism in dry reforming of methane, due to their higher presence of reactive oxygen species, making them more resistant to coke formation.

JOURNAL OF CO2 UTILIZATION (2021)

添加到收藏夹

Article Chemistry, Multidisciplinary

Cerium doped Zr-based metal-organic framework as catalyst for direct synthesis of dimethyl carbonate from CO2 and methanol

Linmeng Huo, Lin Wang, Jingjie Li, Yanfeng Pu, Keng Xuan, Congzhen Qiao, Hao Yang

Summary: The disadvantage of Ce/Zr metal oxide catalyst for direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol, low DMC formation rate due to low specific surface area and active sites, can be improved by highly uniform dispersion cerium-doped UiO-66 MOFs. Experimental evaluation results showed that Ce-doped UiO-66 MOFs exhibited significantly improved catalytic performance compared to traditional Ce/Zr metal oxide catalyst.

JOURNAL OF CO2 UTILIZATION (2023)

添加到收藏夹

Article Green & Sustainable Science & Technology

Synthesis of dimethyl carbonate from CO2 and methanol over CeO2 catalysts prepared by soft-template precipitation and hydrothermal method

W. Donphai, O. Phichairatanaphong, R. Fujii, P. Li, T. Chang, M. Yabushita, Y. Nakagawa, K. Tomishige

Summary: Direct synthesis of dimethyl carbonate (DMC) is an environmentally-friendly process that utilizes CO2 as a source of useful chemicals. Various CeO2 catalysts with different properties have been employed for this reaction. In this study, CeO2 catalysts prepared via specific methods showed the highest DMC yield under certain conditions, comparable to previously reported values.

MATERIALS TODAY SUSTAINABILITY (2023)

添加到收藏夹

Article Chemistry, Physical

Dendritic fibrous nano-titanium (DFNT) with highly dispersed poly(ionic liquids) as a nanocatalyst for synthesis of dimethyl carbonate from methanol and carbon dioxide

Yanqing Chen, Seyed Mohsen Sadeghzadeh

Summary: An advanced dandelion-like TiO2 material with anatase/TiO2 phase interface and high specific outer layer was successfully synthesized via a convenient and eco-friendly method. The uniform dispersion of doped IL/Mo132 DFNT-based metal-organic frameworks improved the low specific outer layer and less active sites issue.

JOURNAL OF MOLECULAR LIQUIDS (2023)

添加到收藏夹

Article Biochemistry & Molecular Biology

Elucidating the Role of Surface Ce4+ and Oxygen Vacancies of CeO2 in the Direct Synthesis of Dimethyl Carbonate from CO2 and Methanol

Guoqiang Zhang, Yuan Zhou, Yanlin Yang, Tiantian Kong, Ya Song, Song Zhang, Huayan Zheng

Summary: The role of surface Ce4+ and oxygen vacancies in the catalytic activity for direct synthesis of dimethyl carbonate (DMC) from CO2 and methanol was investigated. Reduction treatment promoted the conversion of Ce4+ to Ce3+ and increased the concentration of surface oxygen vacancies, while reoxidation treatment facilitated the conversion of Ce3+ to Ce4+ and reduced the concentration of surface oxygen vacancies. The catalytic activity was influenced by the number of moderate acidic/basic sites and the surface concentration of Ce4+ and oxygen vacancies.

MOLECULES (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Efficient electrosynthesis of dimethyl carbonate from urea and methanol under mild conditions

Mingjuan Sun, Fengjiao Li, Yanhui Cui, Xiaolin Zhao, Haiwei Chen, Shuting Liang

Summary: Dimethyl carbonate (DMC) has been synthesized efficiently and mild by the electrochemical method using urea and methanol as starting materials. The highest DMC yield of 50.4% with 100% selectivity was achieved under optimized conditions. This method also successfully synthesized other important organic carbonates.

REACTION CHEMISTRY & ENGINEERING (2023)

添加到收藏夹

Article Chemistry, Physical

Direct synthesis of dimethyl carbonate from methanol and carbon dioxide over nickel loaded ceria as improved catalysts

Mariyamuthu Mariyaselvakumar, Tamilmani Selvaraj, Viswanathan Balasubramanian, Kannan Srinivasan

Summary: This research demonstrates the catalytic activity of inexpensive nickel loaded ceria catalysts in the direct synthesis of dimethyl carbonate (DMC) without a dehydrating agent. The catalysts were characterized by various physicochemical characterization techniques. The high catalytic activity of the Ni-modified catalysts is attributed to the role of nickel and the presence of strong acidic and moderate basic sites.

REACTION KINETICS MECHANISMS AND CATALYSIS (2022)

添加到收藏夹

Review Biochemistry & Molecular Biology

New Strategies on Green Synthesis of Dimethyl Carbonate from Carbon Dioxide and Methanol over Oxide Composites

Yifei Zhang, Muhammad Shoaib Khalid, Meng Wang, Gao Li

Summary: This review paper discusses the green production methods of DMC using Zr/Ce/Cu-based nanocomposites as catalysts, including the relationship between the structure and activity of catalysts, catalytic mechanisms, molecular activation and active sites identification of catalysts.

MOLECULES (2022)

添加到收藏夹

Article Chemistry, Multidisciplinary

A new green system of biogenic dendritic fibrous Dy2Sn2O7 for production of dimethyl carbonate from carbon dioxide

ShiJun Chen, Jianshan Li, Li'an Yang, Jinzhu Chen, Rahele Zhiani

Summary: Biogenic dendritic fibrous Dy2Sn2O7 (Dy2Sn2O7 BDF) were greenly synthesized with the presence of Desulfovibrio alaskensis G20 using tin(IV) chloride pentahydrate and Dy(NO3)3.5 H2O as sources of tin and dysprosium. Various approaches were employed to investigate the specimens created with Desulfovibrio alaskensis G20. The properties of Dy2Sn2O7 BDF as a nanocatalyst were determined through EDS, TGA, TEM, XRD, and SEM, revealing its high ionic internal character, mechanical and thermal sustainability, and persistent colloidal stability.

JOURNAL OF CO2 UTILIZATION (2023)

添加到收藏夹

Article Chemistry, Physical

Dimethyl ether (DME) synthesis from CO2 and H2 through ethanol-assisted methanol synthesis and methanol dehydration

Warangthat Kriprasertkul, Thongthai Witoon, Pattaraporn Kim-Lohsoontorn

Summary: This study investigated the two steps of dimethyl ether (DME) synthesis from CO2 and H-2, including CO2 hydrogenation to methanol through ethanol-assisted method and methanol dehydration to DME. The addition of ZrO2, Al2O3, and ZrO(2)eAl(2)O(3) into Cu/ZnO catalyst was studied, and suitable zeolite for methanol dehydration was determined. The results showed that ethanol-assisted method and the Cu/ZnO/ZrO2 catalyst provided high methanol yield and CO2 conversion. Ferrierite zeolite exhibited the highest DME productivity. The synthesis of DME and ethylene from CO2 and H-2 through ethanol-assisted methanol synthesis and methanol dehydration has potential applications.

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY (2022)

添加到收藏夹

暂无数据

暂无数据

© Peeref 2019-2024. All rights reserved.