547-61-5Relevant articles and documents
Design of stable mixed-metal MIL-101(Cr/Fe) materials with enhanced catalytic activity for the Prins reaction
álvaro, Mercedes,García, Hermenegildo,Giménez-Marqués, Mónica,Gkaniatsou, Effrosyni,Greneche, Jean-Marc,Navalón, Sergio,Santiago-Portillo, Andrea,Serre, Christian,Sicard, Clémence,Steunou, Nathalie,Vallés-García, Cristina
supporting information, p. 17002 - 17011 (2020/09/16)
This work highlights the benefit of designing mixed-metal (Cr/Fe) MOFs for enhanced chemical stability and catalytic activity. A robust and stable mixed-metal MIL-101(Cr/Fe) was prepared through a HF-free direct hydrothermal route with Fe3+ content up to 21 wt%. The incorporation of Fe3+ cations in the crystal structure was confirmed by 57Fe M?ssbauer spectrometry. The catalytic performance of the mixed metal MIL-101(Cr/Fe) was evaluated in the Prins reaction. MIL-101(Cr/Fe) exhibited a higher catalytic activity compared to MIL-101(Cr), improved chemical stability compared to MIL-101(Fe) and a higher catalytic activity for bulky substrates compared to MIL-100(Fe). In situ infra-red spectroscopy study suggests that the incorporation of Fe3+ ions in MIL-101 structure leads to an increase in Lewis acid sites. It was thus concluded that the predominant role of Cr3+ ions was to maintain the crystal structure, while Fe3+ ions enhanced the catalytic activity.
Solvent and additive-free selective aerobic allylic hydroxylation of β-pinene catalyzed by metalloporphyrins
Xu, Shi-Chao,Zhu, Shou-Ji,Bi, Liang-Wu,Chen, Yu-Xiang,Wang, Jing,Lu, Yan-Ju,Gu, Yan,Zhao, Zhen-Dong
, p. 575 - 578 (2017/06/19)
Metallodeuteroporphyrins (MDPs) were employed as the catalysts for aerobic oxidation of β-pinene in absence of solvents and additives. Allylic hydroxylation products were found to be the main products from this protocol. The catalytic activity of MDPs with different metal nuclei and the influences of technological conditions on this reaction were investigated. This catalytic system has bright application prospect since only eco-friendly and readily available dioxygen were needed.
Beta-pinene selective hydroxylation oxidation method and product thereof
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Paragraph 0032; 033; 0334;, (2016/10/10)
The invention discloses a beta-pinene selective hydroxylation oxidation method and a product thereof. The beta-pinene selective hydroxylation oxidation method uses ordinary-pressure oxygen or oxygen-enriched air as an oxidant, uses metal porphyrin or their solid carriers as a catalyst and is performed in the absence of an additional solvent or a co-oxidation reducer, and the beta-pinene hydroxylation oxidation product is obtained by means of the method in a high-selectivity mode. Main oxidation products include pinocarveol, 2,10-epoxy pinane and myrtenol, wherein the overall selectivity of the hydroxylation oxidation products 1 and 3 is above 90%. The usage amount of the catalyst used in method is small, a reaction process is simple, the temperature is low, the initiation rate is high, the selectivity is good, homogeneous catalysis can be achieved, and heterogeneous catalysis can also be performed after immobilization.