931-17-9Relevant articles and documents
Ammonium Fluoroperoxomonophosphate Dihydrate, 2*2H2O. First Chemical Synthesis of a Fluorinated Peroxophosphate
Bhattacharjee, Manish,Chaudhuri, Mihir K.
, p. 2005 - 2006 (1988)
The salt 2*2H2O has been synthesised from the reaction of with 48 percent HF and 30 percent H2O2 at pH 10 - 11, maintained by the addition of aqueous ammonia, at an ice-bath temperature.The compound has been characterised by chemical analysis, i.r., and laser-Raman spectroscopic studies.Some properties of the compound are also reported.
Two routes to 1,2-cyclohexanediol catalyzed by zeolites under solvent-free condition
Lei, Wenkang,Wu, Zaikun,Ma, Jie,Yu, Ping,Luo, Yunbai
, p. 6893 - 6905 (2016)
Two routes to 1,2-cyclohexanediol were studied. Specifically: (a) the hydrolysis of cyclohexene oxide and (b) the direct dihydroxylation of cyclohexene with aqueous hydrogen peroxide. Both reactions were carried out with zeolites as catalysts under solvent-free conditions, aiming to establish green routes for the synthesis of 1,2-cyclohexanediol. In the first route, H-Beta and H-ZSM-5 zeolites were used as catalysts, respectively. According to the results, H-ZSM-5 was a suitable catalyst for the hydrolysis of cyclohexene oxide. A 88.6?% yield of 1,2-cyclohexanediol could be obtained at a 96.2?% conversion of cyclohexene oxide under mild conditions, and the catalyst could be reused for three times. Compared with H-ZSM-5, H-Beta gave a much lower selectivity (63?%), although it was more active. In the second route, Ti-Beta zeolites with three different Ti loadings prepared via a simple two-step strategy were characterized and used. The results indicated that it was the framework Ti species which was responsible for the catalytic activity. The resultant Ti-Beta-3?% could give a 90.2?% cyclohexene conversion at a 66.2?% selectivity of 1,2-cyclohexanediol.
Selective Oxidation of Cyclohexene with H2O2 Catalyzed by Resin Supported Peroxo Phosphotungstic Acid Under Mild Conditions
Liu, Jia,Yang, Guoqiang,Liu, Ying,Zhou, Zheng,Zhang, Zhibing,Hu, Xingbang
, p. 147 - 152 (2020/06/20)
Abstract: A series of modified chloromethyl polystyrene resins loaded with peroxo phosphotungstic acid catalysts were synthesized for the selective oxidation of cyclohexene. The surface of resin was enriched with high concentration quaternary ammonium salt, and grafted with a large amount of peroxo PW-anion through ion exchange. The novel resin catalyst showed excellent cyclohexene conversion and epoxide selectivity using 30% H2O2 as oxidant at ambient temperature. Furthermore, the resin catalyst exhibited excellent recycling stability, which can be reused by a simple filtration and the peroxo phosphotungstic acid did not leach into the solvent after reaction. Graphic Abstract: [Figure not available: see fulltext.]
Direct hydrothermal synthesis of Mo-containing MFI zeolites using Mo-EDTA complex and their catalytic application in cyclohexene epoxidation
Chang, Xinyu,Jia, Mingjun,Miao, Songsong,Sun, Yuting,Xu, Lifen,Zhang, Haoyang
, p. 2265 - 2274 (2021/09/20)
A series of Mo-containing MFI zeolites with different Mo loadings (Mo-MFI-n, n represent the initial Si/Mo molar ratio) was hydrothermally synthesized by using tetrapropylammonium hydroxide as the template and Mo-EDTA complex as the Mo source. Various characterization results demonstrated that the use of the Mo-EDTA complex is beneficial for the incorporation of more Mo species into the MFI-type zeolites. The special complexing capability of EDTA2– plays a critical role in adjusting the release rate of the Mo species to combine with the Si tetrahedron species during the zeolite growth process, thus leading to a uniform distribution of Mo in the MFI framework. In addition, a small portion of extra-framework Mo clusters may be distributed inside the channels or near the pore window of the zeolites. The catalytic properties of these Mo-containing MFI zeolites were evaluated for the epoxidation of cyclohexene with H2O2 as the oxidant. The composition-optimized catalyst, Mo-MFI-50, efficiently converted cyclohexene to the corresponding epoxide with a relatively high conversion (93%) and epoxide selectivity (82%) at 75 °C after 9 h of reaction. Moreover, the resultant Mo-containing MFI catalyst exhibited excellent structural stability and recoverability and was easily recycled by simple filtration without the need for calcination treatment.
Selective cyclohexene oxidation to allylic compounds over a Cu-triazole frameworkviahomolytic activation of hydrogen peroxide
Adpakpang, Kanyaporn,Bureekaew, Sareeya,Ponchai, Panyapat
supporting information, p. 7917 - 7921 (2021/06/18)
Utilization of metal-organic frameworks as heterogeneous catalysts is crucial owing to their abundant catalytic sites and well-defined porous structures. Highly robust [Cu3(trz)3(μ3-OH)(OH)2(H2O)4]·2H2O (trz = 1,2,4-triazole) was employed as a catalyst for liquid-phase cyclohexene oxidation with hydrogen peroxide (H2O2). Possessing the porous structure together with Lewis acid attributes from the triangular [Cu3(trz)3(μ3-OH)] center, selective oxidation of cyclohexene to allylic products gives a molar yield of 31% with 87% selectivity. According to the highly selective allylic production, the reaction over the present Cu-MOF plausibly occursviahomolytic activation of H2O2. This finding elucidates the unique features of the MOF for efficient catalysis of cyclohexene oxidation.
