{"title":"Super rapid preparation of biodiesel over highly dispersed K2CO3 supported by LDH","authors":"Ying Yang, Shuang Tao, Guangtao Li, Aijun Guo, Ying Tang","doi":"10.1002/kin.21689","DOIUrl":null,"url":null,"abstract":"<p>A new heterogeneous K<sub>2</sub>CO<sub>3</sub> supported by a layered double hydroxide (LDH), Mg–Al hydrotalcite, was prepared and used as a catalyst for the biodiesel preparation by a tri-component coupling transesterification of methanol, vegetable oil, and methyl acetate. K<sub>2</sub>CO<sub>3</sub>/Mg-Al exhibits high catalytic activities, and biodiesel yield can reach 99.48% within 20 min under 60°C, with 6 wt.% of K<sub>2</sub>CO<sub>3</sub>/Mg-Al, 1:1:12 molar ratio of rapeseed oil, methyl acetate, and methanol. Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy, nitrogen physical adsorption, thermogravimetry analysis, and CO<sub>2</sub>-chemical adsorption were used to assess the physical properties of the prepared K<sub>2</sub>CO<sub>3</sub>/Mg-Al. Using the tri-component coupling transesterification, 12.2% cost reduce can be get by reducing the cost from 8458 to 7424 ¥/t compared with di-component transesterification containing oil and methanol as resource.</p>","PeriodicalId":13894,"journal":{"name":"International Journal of Chemical Kinetics","volume":"56 1","pages":"20-29"},"PeriodicalIF":1.5000,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Chemical Kinetics","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/kin.21689","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A new heterogeneous K2CO3 supported by a layered double hydroxide (LDH), Mg–Al hydrotalcite, was prepared and used as a catalyst for the biodiesel preparation by a tri-component coupling transesterification of methanol, vegetable oil, and methyl acetate. K2CO3/Mg-Al exhibits high catalytic activities, and biodiesel yield can reach 99.48% within 20 min under 60°C, with 6 wt.% of K2CO3/Mg-Al, 1:1:12 molar ratio of rapeseed oil, methyl acetate, and methanol. Fourier-transform infrared spectroscopy, X-ray diffraction (XRD), scanning electron microscopy, nitrogen physical adsorption, thermogravimetry analysis, and CO2-chemical adsorption were used to assess the physical properties of the prepared K2CO3/Mg-Al. Using the tri-component coupling transesterification, 12.2% cost reduce can be get by reducing the cost from 8458 to 7424 ¥/t compared with di-component transesterification containing oil and methanol as resource.
期刊介绍：
As the leading archival journal devoted exclusively to chemical kinetics, the International Journal of Chemical Kinetics publishes original research in gas phase, condensed phase, and polymer reaction kinetics, as well as biochemical and surface kinetics. The Journal seeks to be the primary archive for careful experimental measurements of reaction kinetics, in both simple and complex systems. The Journal also presents new developments in applied theoretical kinetics and publishes large kinetic models, and the algorithms and estimates used in these models. These include methods for handling the large reaction networks important in biochemistry, catalysis, and free radical chemistry. In addition, the Journal explores such topics as the quantitative relationships between molecular structure and chemical reactivity, organic/inorganic chemistry and reaction mechanisms, and the reactive chemistry at interfaces.
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