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Effect of Preparation Method on the Catalytic Property of Calcined Ca-Al Hydrotalcite for the Synthesis of Ethyl Methyl Carbonate.

作者信息

Zhou Xi, Zhang Chao

机构信息

Department of Food and Chemical Engineering, Shaoyang University, Shaoyang 422000, Hunan, P. R. China.

出版信息

ACS Omega. 2021 Feb 10;6(7):5056-5060. doi: 10.1021/acsomega.0c06269. eCollection 2021 Feb 23.

DOI:10.1021/acsomega.0c06269
PMID:33644614
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7905930/
Abstract

Calcined Ca-Al hydrotalcites were prepared by a clean method (CaAl-1) and coprecipitation (CaAl-2), respectively. Effects of preparation methods on the structure and catalytic property of calcined Ca-Al hydrotalcites were investigated. The samples were characterized by X-ray diffraction (XRD), inductively coupled plasma optical emission spectroscopy (ICP-AES), X-ray photoelectron spectroscopy (XPS), thermogravimetric (TG), CO-programmed temperature desorption method (CO-TPD), low-temperature N adsorption-desorption, and the Hammett indicator method. Compared with CaAl-2, CaAl-1 had a higher specific surface area and surface alkali density, which makes it have relatively higher catalytic activity for transesterification synthesis of ethyl methyl carbonate (EMC). Also, a 50.6% yield of EMC was obtained in the presence of 1.5% CaAl-1 at 100 °C in 1 h. Moreover, the catalytic activity of CaAl-1 showed no remarkable change after five runs.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/0bf2c04394d8/ao0c06269_0009.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/7380587a84f5/ao0c06269_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/594c112b4387/ao0c06269_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/be5290c7a345/ao0c06269_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/7276258ec924/ao0c06269_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/fa96b5033cfc/ao0c06269_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/b28952dff946/ao0c06269_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/0bf2c04394d8/ao0c06269_0009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/93bddd37a459/ao0c06269_0002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/7380587a84f5/ao0c06269_0003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/594c112b4387/ao0c06269_0004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/be5290c7a345/ao0c06269_0005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/7276258ec924/ao0c06269_0006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/fa96b5033cfc/ao0c06269_0007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/b28952dff946/ao0c06269_0008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/fdcf/7905930/0bf2c04394d8/ao0c06269_0009.jpg

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引用本文的文献

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本文引用的文献

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ACS Omega. 2020 Feb 12;5(7):3689-3698. doi: 10.1021/acsomega.9b04290. eCollection 2020 Feb 25.
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Zn- and Ti-Modified Hydrotalcites for Transesterification of Dimethyl Terephthalate with Ethylene Glycol: Effect of the Metal Oxide and Catalyst Synthesis Method.
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