119-47-1Relevant articles and documents
Regiospecific, one-pot, and pseudo-five-component synthesis of 6,6′-(arylmethylene)bis(2-(tert -butyl)4-methylphenol) antioxidants using highly sulfonated multi-walled carbon nanotubes under solvent-free conditions
Fareghi-Alamdari, Reza,Golestanzadeh, Mohsen,Agend, Farima,Zekri, Negar
, p. 982 - 991 (2013)
This is the first report of an innovative, one-pot, pseudo-five-component, and solvent-free synthesis of 6,6′-(arylmethylene)bis(2-(tert-butyl)4- methylphenol) antioxidants from p-cresol, methyl tert-butyl ether, and aldehydes in the presence of sulfonate
Trialkylamine controlled phenol-for maldehyde reaction over clay catalysts: Selective and environmentally benign synthesis of salicylic aldehydes
Bigi, Franca,Conforti, Maria Lina,Maggi, Raimondo,Sartori, Giovanni
, p. 2709 - 2712 (2000)
Substituted salicylic aldehydes 6 are synthesised in good yields and excellent selectivities by reaction of phenols 1 with formaldehyde 2 over montmorillonite KSF-Et3N as a heterogeneous and reusable catalyst. (C) 2000 Elsevier Science Ltd.
Sonocatalytic removal of naproxen by synthesized zinc oxide nanoparticles on montmorillonite
Karaca, Melike,Kiran?an, Murat,Karaca, Semra,Khataee, Alireza,Karimi, Atefeh
, p. 250 - 256 (2016/01/16)
ZnO/MMT nanocomposite as sonocatalyst was prepared by immobilizing synthesized ZnO on the montmorillonite surface. The characteristics of as-prepared nanocomposite were studied by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM) and X-ray diffraction (XRD) techniques. The synthesized samples were used as a catalyst for sonocatalytic degradation of naproxen. ZnO/MMT catalyst in the presence of ultrasound irradiation was more effective compared to pure ZnO nanoparticles and MMT particles in the sonocatalysis of naproxen. The effect of different operational parameters on the sonocatalytic degradation of naproxen including initial drug concentration, sonocatalyst dosage, solution pH, ultrasonic power and the presence of organic and inorganic scavengers were evaluated. It was found that the presence of the scavengers suppressed the sonocatalytic degradation efficiency. The reusability of the nanocomposite was examined in several consecutive runs, and the degradation efficiency decreased only 2% after 5 repeated runs. The main intermediates of naproxen degradation were determined by gas chromatography-mass spectrometry (GC-Mass).
Based on mixed alkali catalyst catalytic double-phenolic antioxidant preparation method and application (by machine translation)
-
Paragraph 0050; 0051, (2017/03/08)
The invention discloses a mixed alkali catalyst based on double-phenol method for preparing an antioxidant and application. The preparation method comprises: the two alkyl substituted phenol and aldehyde compound is placed in the closed and in the reactor and in a mixed alkali catalyst can choose to add or not to add the presence of an organic solvent of the reaction is carried out under the condition of, and in the after the reaction is finished after processing the obtained compound antioxidant product double phenol apperception, the anti-oxidant product can be used for preparing the lubricating oil composition, composition or burns the oil line as plastic, rubber, such as anti-aging agent. Antioxidant bisphenol compounds of this invention for the production of simple operation, mild conditions, such as the sources of raw materials and catalyst of extensive and is cheap and easy to obtain, the reaction cycle is short, it is easy to control, process with high safety, low energy consumption in the producing process, the yield of the product and high purity, and can effectively control and reducing pollutant emissions, is a safe and energy-saving, environmental protection art. (by machine translation)