دورية أكاديمية
Temperature Stable Ion Exchange Resins as Catalysts for the Manufacturing of Vitamin Precursors by Aldol Reaction.
العنوان: | Temperature Stable Ion Exchange Resins as Catalysts for the Manufacturing of Vitamin Precursors by Aldol Reaction. |
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المؤلفون: | Vosberg J; Circular Transformation Lab, TH Köln-University of Applied Sciences, 51379 Leverkusen, Germany., Bouveyron T; Circular Transformation Lab, TH Köln-University of Applied Sciences, 51379 Leverkusen, Germany., Eisen-Winter S; Circular Transformation Lab, TH Köln-University of Applied Sciences, 51379 Leverkusen, Germany., Drönner J; Circular Transformation Lab, TH Köln-University of Applied Sciences, 51379 Leverkusen, Germany., Raabe G; Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany., Vanhoorne P; Lanxess Deutschland GmbH, LPT-M-R&I, Kaiser-Wilhelm-Allee, 51369 Leverkusen, Germany., Behnke S; Lanxess Deutschland GmbH, LPT-M-R&I, Kaiser-Wilhelm-Allee, 51369 Leverkusen, Germany., Eisenacher M; Circular Transformation Lab, TH Köln-University of Applied Sciences, 51379 Leverkusen, Germany. |
المصدر: | International journal of molecular sciences [Int J Mol Sci] 2023 Sep 21; Vol. 24 (18). Date of Electronic Publication: 2023 Sep 21. |
نوع المنشور: | Journal Article |
اللغة: | English |
بيانات الدورية: | Publisher: MDPI Country of Publication: Switzerland NLM ID: 101092791 Publication Model: Electronic Cited Medium: Internet ISSN: 1422-0067 (Electronic) Linking ISSN: 14220067 NLM ISO Abbreviation: Int J Mol Sci Subsets: MEDLINE |
أسماء مطبوعة: | Original Publication: Basel, Switzerland : MDPI, [2000- |
مواضيع طبية MeSH: | Provitamins* , Ion Exchange Resins*, Temperature ; Catalysis |
مستخلص: | This study explores the potential of robust, strongly basic type I ion exchange resins-specifically, Amberlyst ® A26 OH and Lewatit ® K 6465-as catalysts for the aldol condensation of citral and acetone, yielding pseudoionone. Emphasis is placed on their long-term stability and commendable performance in continuous operational settings. The aldol reaction, which traditionally is carried out using aqueous sodium hydroxide as the catalyst, holds the potential for enhanced sustainability and reduced waste production through the use of basic ion exchange resins in heterogeneous catalysis. Density Functional Theory (DFT) calculations are employed to investigate catalyst deactivation mechanisms. The result of these calculations indicates that the active sites of Amberlyst ® A26 OH are cleaved more easily than the active sites of Lewatit ® K 6465. However, the experimental data show a gradual decline in catalytic activity for both resins. Batch experiments reveal Amberlyst ® A26 OH's active sites diminishing, while Lewatit ® K 6465 maintains relative consistency. This points to distinct deactivation processes for each catalyst. The constant count of basic sites in Lewatit ® K 6465 during the reaction suggests additional factors due to its unique polymer structure. This intriguing observation also highlights an exceptional temperature stability for Lewatit ® K 6465 compared to Amberlyst ® A26 OH, effectively surmounting one of the prominent challenges associated with the utilization of ion exchange resins in catalytic applications. |
References: | Am J Clin Nutr. 1989 Feb;49(2):358-71. (PMID: 2492745) Polymers (Basel). 2023 Feb 23;15(5):. (PMID: 36904360) Physiol Rev. 1984 Jul;64(3):873-937. (PMID: 6377341) Lancet. 1995 Jan 7;345(8941):31-5. (PMID: 7799706) |
فهرسة مساهمة: | Keywords: aldol reaction; catalyst deactivation; heterogeneous catalysis; ion exchange resin; vitamins |
المشرفين على المادة: | 0 (Provitamins) 8C6G962B53 (3-hydroxybutanal) 0 (Ion Exchange Resins) |
تواريخ الأحداث: | Date Created: 20230928 Date Completed: 20230929 Latest Revision: 20230930 |
رمز التحديث: | 20240628 |
مُعرف محوري في PubMed: | PMC10532307 |
DOI: | 10.3390/ijms241814367 |
PMID: | 37762670 |
قاعدة البيانات: | MEDLINE |
تدمد: | 1422-0067 |
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DOI: | 10.3390/ijms241814367 |