التفاصيل البيبلوغرافية
| العنوان: |
Sulfonated carbon-catalyzed deamination of alanine under hydrothermal conditions. |
| المؤلفون: |
Zheng, Qingxin1 (AUTHOR) qingxin.zheng.a2@tohoku.ac.jp, Kato, Takuma2 (AUTHOR), Ito, Yuko2 (AUTHOR), Wagatsuma, Masayoshi2 (AUTHOR), Hiraga, Yuya1 (AUTHOR), Watanabe, Masaru1,3 (AUTHOR) masaru.watanabe.e2@tohoku.ac.jp |
| المصدر: |
Journal of Supercritical Fluids. Sep2021, Vol. 175, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
*DEAMINATION, *FUNCTIONAL groups, *AMINO acids, *SULFONYL group, *CATALYTIC activity, *LEUCINE, *ALANINE |
| مستخلص: |
• Catalyst screening for hydrothermal deamination reaction of alanine was performed. • The sulfonated carbon was found to be the solid acid additive with the highest reactivity. • The additive amount of catalyst and the alanine solution concentration were optimized. • The effects of temperature and time on catalytic deamination reaction were studied. • The sulfonated carbon catalyst was successfully applied to other various amino acids. [Display omitted] Here, the catalytic effects of sixteen types of solid acid/base additives on the deamination of alanine under hydrothermal conditions at 90–150 °C were examined. As a result, porous sulfonated carbon (FCC-P) showed the highest catalytic activity, which was attributed to the high contents of multiple functional groups like sulfonyl and oxygen functional groups. Using FCC-P as the catalyst, the parameters including the additive amount and alanine solution concentration were optimized to be 0.5 g and ≥ 50 mmol/L, respectively, and the effects of temperature and time were studied detailedly. At 150 °C for 60 min, the deamination yield and alanine conversion achieved to 20.0% and 51.0%, respectively, with the production yield of ammonium at 7.6%. The reusability of two types of sulfonated carbon catalysts was examined. Finally, FCC-P was applied to amino acids including glycine, valine, leucine, and serine, and showed high catalytic activity for each hydrothermal deamination reaction. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
