The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform
Masato Kouzu - One of the best experts on this subject based on the ideXlab platform.
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heterogeneous catalysis of Calcium Oxide used for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2009Co-Authors: Masato Kouzu, Shinya Yamanaka, Jyusuke Hidaka, Michito TsunomoriAbstract:Abstract Much interest has been taken in finding a solid base catalyst for a reaction to produce biodiesel. Calcium Oxide has the great advantage of the enhanced catalytic activity, but the soluble substance is leached away from the solid base catalyst during the reaction. In this paper, the leaching of solid base catalyst was investigated on the basis of data from the heterogeneous catalytic transesterification of soybean oil at reflux of methanol. When Calcium Oxide was employed for the reaction, the Calcium contents of the produced oil and glycerol were 139 and 4602 ppm, respectively. This data indicated that the amount of the soluble substance corresponded to 10.5 wt% of the employed catalyst. Since Calcium Oxide was transformed into Calcium diglycerOxide at the beginning of the reaction, many of the soluble substances derived from Calcium diglycerOxide. Also, the soluble substances were rather active in the soybean oil transesterification. On the other hand, Calcium diglycerOxide was employed for the reaction, with the result that the amount of the soluble substance was only 4.0 wt%. In this case, the soluble substance did not catalyze the conversion of soybean oil into its methyl esters. Based on the experimental results, the heterogeneous catalysis of Calcium Oxide was discussed. Additionally, removal of the soluble substance by cation-exchange resin was tested in order to purify the produced oil.
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active phase of Calcium Oxide used as solid base catalyst for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2008Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Shinya Yamanaka, Jusuke HidakaAbstract:Abstract For developing a process of biodiesel production with environmental benignity, much interest has been focused on solid base catalysts such as Calcium Oxide for transesterification of vegetable oils with methanol. In this paper, the active phase of Calcium Oxide was investigated by characterizing the catalyst collected after achieving the conversion of edible soybean oil into its methyl ester at reflux of methanol in a glass batch reactor. Calcium Oxide combined with the by-produced glycerol, so that Calcium diglycerOxide was a major constituent of the collected catalyst. The absence of Calcium methOxide was clear from the spectrum of solid-state 13C-NMR. The chemical change of Calcium Oxide was not observed, when the yield of FAME reached 30%. The collected catalyst was not as active as the fresh one (Calcium Oxide), but was reused without any deactivation. In order to identify the active phase of the collected catalyst, we prepared Calcium diglycerOxide by immersion of Calcium Oxide with refluxing methanol in the presence of glycerol. Calcium diglycerOxide prepared as the reference sample was as active as the collected catalyst in the transesterification, and was tolerant to air-exposure.
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biodliesel production from soybean oil using Calcium Oxide as a heterogeneous catalyst
Journal of The Japan Institute of Energy, 2006Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Mitsumasa Umemoto, Yoichi Aihara, Yoshikazu Sugimoto, Jusuke HidakaAbstract:Transesterification of soybean oil was carried out with methanol over Calcium Oxide at methanol re-fluxing temperature, in order to study the application of heterogeneous catalytic process to biodiesel produc-tion. The catalyst samples were prepared by calcination of the precipitated Calcium carbonate at 900°C in the prescribed atmosphere, an ambient air or a helium gas flow. Calcium Oxide prepared in an ambient air catalyzed the transesterification of soybean oil, but yield of the fatty acid methyl esters was only 10% for 4h. The calcination in a helium gas flow markedly intensified the activity of Calcium Oxide, as the obtained catalyst sample completed the transesterification for 2h. The obtained oil after completing the transesterification had appropriate properties for diesel fuel oil. The active catalyst prepared in a helium gas flow has a higher base strength (15.0
Jusuke Hidaka - One of the best experts on this subject based on the ideXlab platform.
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active phase of Calcium Oxide used as solid base catalyst for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2008Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Shinya Yamanaka, Jusuke HidakaAbstract:Abstract For developing a process of biodiesel production with environmental benignity, much interest has been focused on solid base catalysts such as Calcium Oxide for transesterification of vegetable oils with methanol. In this paper, the active phase of Calcium Oxide was investigated by characterizing the catalyst collected after achieving the conversion of edible soybean oil into its methyl ester at reflux of methanol in a glass batch reactor. Calcium Oxide combined with the by-produced glycerol, so that Calcium diglycerOxide was a major constituent of the collected catalyst. The absence of Calcium methOxide was clear from the spectrum of solid-state 13C-NMR. The chemical change of Calcium Oxide was not observed, when the yield of FAME reached 30%. The collected catalyst was not as active as the fresh one (Calcium Oxide), but was reused without any deactivation. In order to identify the active phase of the collected catalyst, we prepared Calcium diglycerOxide by immersion of Calcium Oxide with refluxing methanol in the presence of glycerol. Calcium diglycerOxide prepared as the reference sample was as active as the collected catalyst in the transesterification, and was tolerant to air-exposure.
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biodliesel production from soybean oil using Calcium Oxide as a heterogeneous catalyst
Journal of The Japan Institute of Energy, 2006Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Mitsumasa Umemoto, Yoichi Aihara, Yoshikazu Sugimoto, Jusuke HidakaAbstract:Transesterification of soybean oil was carried out with methanol over Calcium Oxide at methanol re-fluxing temperature, in order to study the application of heterogeneous catalytic process to biodiesel produc-tion. The catalyst samples were prepared by calcination of the precipitated Calcium carbonate at 900°C in the prescribed atmosphere, an ambient air or a helium gas flow. Calcium Oxide prepared in an ambient air catalyzed the transesterification of soybean oil, but yield of the fatty acid methyl esters was only 10% for 4h. The calcination in a helium gas flow markedly intensified the activity of Calcium Oxide, as the obtained catalyst sample completed the transesterification for 2h. The obtained oil after completing the transesterification had appropriate properties for diesel fuel oil. The active catalyst prepared in a helium gas flow has a higher base strength (15.0
Shinya Yamanaka - One of the best experts on this subject based on the ideXlab platform.
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heterogeneous catalysis of Calcium Oxide used for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2009Co-Authors: Masato Kouzu, Shinya Yamanaka, Jyusuke Hidaka, Michito TsunomoriAbstract:Abstract Much interest has been taken in finding a solid base catalyst for a reaction to produce biodiesel. Calcium Oxide has the great advantage of the enhanced catalytic activity, but the soluble substance is leached away from the solid base catalyst during the reaction. In this paper, the leaching of solid base catalyst was investigated on the basis of data from the heterogeneous catalytic transesterification of soybean oil at reflux of methanol. When Calcium Oxide was employed for the reaction, the Calcium contents of the produced oil and glycerol were 139 and 4602 ppm, respectively. This data indicated that the amount of the soluble substance corresponded to 10.5 wt% of the employed catalyst. Since Calcium Oxide was transformed into Calcium diglycerOxide at the beginning of the reaction, many of the soluble substances derived from Calcium diglycerOxide. Also, the soluble substances were rather active in the soybean oil transesterification. On the other hand, Calcium diglycerOxide was employed for the reaction, with the result that the amount of the soluble substance was only 4.0 wt%. In this case, the soluble substance did not catalyze the conversion of soybean oil into its methyl esters. Based on the experimental results, the heterogeneous catalysis of Calcium Oxide was discussed. Additionally, removal of the soluble substance by cation-exchange resin was tested in order to purify the produced oil.
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active phase of Calcium Oxide used as solid base catalyst for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2008Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Shinya Yamanaka, Jusuke HidakaAbstract:Abstract For developing a process of biodiesel production with environmental benignity, much interest has been focused on solid base catalysts such as Calcium Oxide for transesterification of vegetable oils with methanol. In this paper, the active phase of Calcium Oxide was investigated by characterizing the catalyst collected after achieving the conversion of edible soybean oil into its methyl ester at reflux of methanol in a glass batch reactor. Calcium Oxide combined with the by-produced glycerol, so that Calcium diglycerOxide was a major constituent of the collected catalyst. The absence of Calcium methOxide was clear from the spectrum of solid-state 13C-NMR. The chemical change of Calcium Oxide was not observed, when the yield of FAME reached 30%. The collected catalyst was not as active as the fresh one (Calcium Oxide), but was reused without any deactivation. In order to identify the active phase of the collected catalyst, we prepared Calcium diglycerOxide by immersion of Calcium Oxide with refluxing methanol in the presence of glycerol. Calcium diglycerOxide prepared as the reference sample was as active as the collected catalyst in the transesterification, and was tolerant to air-exposure.
Michito Tsunomori - One of the best experts on this subject based on the ideXlab platform.
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heterogeneous catalysis of Calcium Oxide used for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2009Co-Authors: Masato Kouzu, Shinya Yamanaka, Jyusuke Hidaka, Michito TsunomoriAbstract:Abstract Much interest has been taken in finding a solid base catalyst for a reaction to produce biodiesel. Calcium Oxide has the great advantage of the enhanced catalytic activity, but the soluble substance is leached away from the solid base catalyst during the reaction. In this paper, the leaching of solid base catalyst was investigated on the basis of data from the heterogeneous catalytic transesterification of soybean oil at reflux of methanol. When Calcium Oxide was employed for the reaction, the Calcium contents of the produced oil and glycerol were 139 and 4602 ppm, respectively. This data indicated that the amount of the soluble substance corresponded to 10.5 wt% of the employed catalyst. Since Calcium Oxide was transformed into Calcium diglycerOxide at the beginning of the reaction, many of the soluble substances derived from Calcium diglycerOxide. Also, the soluble substances were rather active in the soybean oil transesterification. On the other hand, Calcium diglycerOxide was employed for the reaction, with the result that the amount of the soluble substance was only 4.0 wt%. In this case, the soluble substance did not catalyze the conversion of soybean oil into its methyl esters. Based on the experimental results, the heterogeneous catalysis of Calcium Oxide was discussed. Additionally, removal of the soluble substance by cation-exchange resin was tested in order to purify the produced oil.
Takekazu Kasuno - One of the best experts on this subject based on the ideXlab platform.
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active phase of Calcium Oxide used as solid base catalyst for transesterification of soybean oil with refluxing methanol
Applied Catalysis A-general, 2008Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Shinya Yamanaka, Jusuke HidakaAbstract:Abstract For developing a process of biodiesel production with environmental benignity, much interest has been focused on solid base catalysts such as Calcium Oxide for transesterification of vegetable oils with methanol. In this paper, the active phase of Calcium Oxide was investigated by characterizing the catalyst collected after achieving the conversion of edible soybean oil into its methyl ester at reflux of methanol in a glass batch reactor. Calcium Oxide combined with the by-produced glycerol, so that Calcium diglycerOxide was a major constituent of the collected catalyst. The absence of Calcium methOxide was clear from the spectrum of solid-state 13C-NMR. The chemical change of Calcium Oxide was not observed, when the yield of FAME reached 30%. The collected catalyst was not as active as the fresh one (Calcium Oxide), but was reused without any deactivation. In order to identify the active phase of the collected catalyst, we prepared Calcium diglycerOxide by immersion of Calcium Oxide with refluxing methanol in the presence of glycerol. Calcium diglycerOxide prepared as the reference sample was as active as the collected catalyst in the transesterification, and was tolerant to air-exposure.
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biodliesel production from soybean oil using Calcium Oxide as a heterogeneous catalyst
Journal of The Japan Institute of Energy, 2006Co-Authors: Masato Kouzu, Takekazu Kasuno, Masahiko Tajika, Mitsumasa Umemoto, Yoichi Aihara, Yoshikazu Sugimoto, Jusuke HidakaAbstract:Transesterification of soybean oil was carried out with methanol over Calcium Oxide at methanol re-fluxing temperature, in order to study the application of heterogeneous catalytic process to biodiesel produc-tion. The catalyst samples were prepared by calcination of the precipitated Calcium carbonate at 900°C in the prescribed atmosphere, an ambient air or a helium gas flow. Calcium Oxide prepared in an ambient air catalyzed the transesterification of soybean oil, but yield of the fatty acid methyl esters was only 10% for 4h. The calcination in a helium gas flow markedly intensified the activity of Calcium Oxide, as the obtained catalyst sample completed the transesterification for 2h. The obtained oil after completing the transesterification had appropriate properties for diesel fuel oil. The active catalyst prepared in a helium gas flow has a higher base strength (15.0
