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Liu J, Chen F, Yang W, Guo J, Xu G, Jia F, Shi L. Excess soluble alkalis to prepare highly efficient MgO with relative low surface oxygen content applied in DMC synthesis. Sci Rep 2021; 11:20931. [PMID: 34686713 PMCID: PMC8536740 DOI: 10.1038/s41598-021-00323-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/11/2021] [Indexed: 11/10/2022] Open
Abstract
The activities of various MgO catalysts, which were prepared from different methods such as hydration synthesis, thermal decomposition, combustion, sol–gel and co-precipitation, were conducted in dimethyl carbonate (DMC) synthesis via transesterification of ethylene carbonate with methanol. MgO-P-Na2CO3-3.14 synthesized by the excess Na2CO3 precipitation compared the best catalytic activity and stability, which could be reused for seven times without obvious deactivation. The DMC yield was as high as 69.97% at 68 °C. The transesterification reaction could be separated into two steps, and the samples obtained by NaOH precipitant exhibited better ring-opening capability, while the catalysts acquired by Na2CO3 precipitant displayed superior transesterification ability. The structure-performance relationship was evaluated by multiple characterization methods. The results indicated that the as-synthesized catalyst derived from dried precursors with more crystalline magnesium carbonate was favorable for the promotion of DMC yield, and MgO-P-Na2CO3-3.14 with more Mg-O pairs, which were the active center for the transesterification of 2-hydroxyethyl methyl carbonate (HEMC) intermediate with methanol, resulted in more moderately basic sites left that was in accordance with the DMC yield variation. MgO-P-Na2CO3-3.14 with greater BET surface area and mesopore volume, relative low surface oxygen content and larger moderately basic sites amount compared the excellent activity in DMC synthesis.
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Affiliation(s)
- Ju Liu
- Key Laboratory On Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, 110142, China.,Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Fei Chen
- Key Laboratory On Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, 110142, China.,Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Wenbing Yang
- Shandong Shida Shenghua Chemical Group, Dongying, 257000, China
| | - Jianjun Guo
- Shandong Shida Shenghua Chemical Group, Dongying, 257000, China
| | - Guangwen Xu
- Key Laboratory On Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, 110142, China.,Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang, 110142, China
| | - Fenglei Jia
- Shandong Shida Shenghua Chemical Group, Dongying, 257000, China.
| | - Lei Shi
- Key Laboratory On Resources Chemicals and Materials of Ministry of Education, Shenyang University of Chemical Technology, Shenyang, 110142, China. .,Institute of Industrial Chemistry and Energy Technology, Shenyang University of Chemical Technology, Shenyang, 110142, China.
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Recent Development of Heterogeneous Catalysis in the Transesterification of Glycerol to Glycerol Carbonate. Catalysts 2019. [DOI: 10.3390/catal9070581] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Glycerol is one of the most crucial by-products in the production of biodiesel, and owing to its oversaturation in the market, several synthetic strategies have been developed to transform it into other higher value-added products such as glycerol carbonate, epichlorohydrin, 1,3-propanediol, etc. Amongst them, glycerol carbonate is considered to be the most valuable product. Considering the facile separation and reusability of catalyst, heterogeneous base catalysts have attracted considerable attention due to the obvious advantages over Brϕnsted acid and homogeneous base catalysts in the transesterification of glycerol. Herein, we will give a short overview on the recent development of the heterogeneous catalysis in the transesterification of glycerol with dialkyl carbonate. Focus will be concentrated on the heterogeneous base catalysts including alkaline-earth metal oxides (MgO, CaO, and mixed oxides), hydrotalcites, zeolites, clinoptilolites, organic bases, etc. Their catalytic mechanisms during the heterogeneous process will be elucidated in detail.
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Zheng Y, Cao L, Xing G, Bai Z, Huang J, Zhang Z. Microscale flower-like magnesium oxide for highly efficient photocatalytic degradation of organic dyes in aqueous solution. RSC Adv 2019; 9:7338-7348. [PMID: 35519988 PMCID: PMC9061167 DOI: 10.1039/c8ra10385b] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 02/27/2019] [Indexed: 11/21/2022] Open
Abstract
Flower-like MgO microparticles with excellent photocatalytic performance in degradation of various organic dyes were synthesized by a facile precipitation method via the reaction between Mg2+ and CO32− at 70 °C.
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Affiliation(s)
- Yajun Zheng
- School of Material Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
- School of Chemistry and Chemical Engineering
| | - Liyun Cao
- School of Material Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Gaoxuan Xing
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Zongquan Bai
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Jianfeng Huang
- School of Material Science and Engineering
- Shaanxi University of Science and Technology
- Xi'an 710021
- China
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
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Hu M, Yan X, Hu X, Zhang J, Feng R, Zhou M. Ultra-high adsorption capacity of MgO/SiO2 composites with rough surfaces for Congo red removal from water. J Colloid Interface Sci 2018; 510:111-117. [DOI: 10.1016/j.jcis.2017.09.063] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 09/13/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
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Bai Z, Zheng Y, Han W, Ji Y, Yan T, Tang Y, Chen G, Zhang Z. Development of a trapezoidal MgO catalyst for highly-efficient transesterification of glycerol and dimethyl carbonate. CrystEngComm 2018. [DOI: 10.1039/c8ce00808f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trapezoidal MgO has been developed for the transesterification of glycerol and dimethyl carbonate with a glycerol carbonate yield of more than 99%.
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Affiliation(s)
- Zongquan Bai
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Yajun Zheng
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Weiwei Han
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Yue Ji
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Tianlan Yan
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Ying Tang
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Gang Chen
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
| | - Zhiping Zhang
- School of Chemistry and Chemical Engineering
- Xi'an Shiyou University
- Xi'an 710065
- China
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Sharma L, Kakkar R. Hierarchically structured magnesium based oxides: synthesis strategies and applications in organic pollutant remediation. CrystEngComm 2017. [DOI: 10.1039/c7ce01755c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
In this highlight, we review the design and formation of MgO based hierarchical structures and cover some selected examples on their applications in adsorption of organic contaminants.
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Affiliation(s)
- Lekha Sharma
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
| | - Rita Kakkar
- Department of Chemistry
- University of Delhi
- Delhi-110007
- India
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Hai C, Zhou Y, Zhang L, Sun Y, Li X, Shen Y, Zhan H, Han Q, Liu J, Ren H. Large-scale synthesis of uniformly dispersed hexagram-like gibbsite by a controlled replacement reaction. CrystEngComm 2017. [DOI: 10.1039/c7ce00822h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile, convenient and mild method has been developed for synthesis of uniformly dispersed 2D six-pointed star-like gibbsite micro-nano crystals with lateral size around 2.5 μm and thickness around 100 nm.
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Affiliation(s)
- Chunxi Hai
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Yuan Zhou
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Lijuan Zhang
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Yanxia Sun
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Xiang Li
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Yue Shen
- Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources
- Qinghai Institute of Salt Lakes
- Chinese Academy of Sciences
- Xining 810008
- China
| | - Huaijin Zhan
- Qinghai Nationalities Universities
- Chengdong District
- China
| | - Qier Han
- Qinghai Nationalities Universities
- Chengdong District
- China
| | - Jianghua Liu
- Shengnuo Optoelectronic Technology (QH) Co. Ltd
- Xining 810000
- China
| | - Hongbo Ren
- Shengnuo Optoelectronic Technology (QH) Co. Ltd
- Xining 810000
- China
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