The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Phosphotungstate (PTA), an insoluble catalyst synthesized with phosphotungstic acid (PWA) and chitosan in acidic reaction system by electrostatic attraction. The catalyst was characterized by DRS and FTIR spectra. Under the catalysis of PTA, the heterogeneous degradation of chitosan with H 2 O 2 was achieved. The effect of volume of H 2 O 2 , dosage of catalyst, reaction...
The oxidative degradation of chitosan with H 2 O 2 aqueous solution was carried out under the catalysis of phosphotungstic acid in heterogeneous phase. The optimal conditions of degradation were determined by orthogonal tests. The structure of the degraded product was characterized by Fourier-transform infrared spectra (FTIR), diffuse reflectance spectra (DRS) and X-ray diffraction...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.