Combined Processes of Polymerization and Drying of Prepolymer Grains in Double-Section Apparatus with Fluidized Bed

The possibility of combining polymerization and drying in obtaining polymers from derivatives of methacrylic acid was revealed experimentally. A mathematical model of combined polymerization and solvent removal under conditions of a fluidized bed of the material was developed.     

Calculation of anisotropically broadened EPR spectra. Shape of the EPR spectrum of a nitroxide radical in the two-millimeter range

Institute of Catalysis, Siberian Branch, Academy of Sciences of the USSR. Translated from Zhurnal Strukturnoi Khimii, Vol. 30, No. 3, pp. 67–70, May–June, 1989.     

The structure of zirconium-silicate fiberglasses and Pt-containing fiberglass catalysts as revealed by solid-state NMR spectroscopy

¹H, ²³Na and ²⁹Si solid-state NMR spectroscopy was used to investigate the formation of fiberglass zirconium-silicate supports and catalysts (glass → fiberglass → leached fiberglass → catalyst). The main emphasis was made on OH-H₂O domains in fiberglass and their role in catalyst preparation. The size of OH-H₂O domains and their accessibility to H-D exchange were determined. Platinum was shown to be anchored on the bridging hydroxyl groups. The quantum-chemical calculations demonstrated the activity of Pt⁰ clusters forming in fiberglass to depend on their nuclearity.