Mixing, pastes batch type

Conventional mechanical mixers are batch type. The paste viscosity will rise at the beginning of paste mixing, but will then gradually decrease. Mixing of paste... 

Conventional mechanical mixers are batch type. The major types of mechanical mixers are the pony mixer, the muUer, or the vertical muller (Figure 7.11). The batch paste mixer contains three major components the paste tank, mixing system, and cooling system. 

Despite the importance of solid-state nuclear magnetic resonance (NMR) spectroscopy for the characterization of solid catalysts, in situ studies related to photocatalysts are rare. Mills and O Rourke [59] monitored the selective photooxidation of toluene by in situ NMR using an NMR tube as the photoreactor. A Ti02 precursor paste was prepared by hydrolysis of titanium propoxide and following treatment at 228 °C. The obtained anatase-type titania was mixed with poly(vinyl alcohol). The obtained paste was coated on the walls of the NMR tube, rotated over night and calcined. In parallel, batch experiments were carried out. The reaction mixture containing the catalyst was directly placed into the tube, which was irradiated outside the spectrometer and then inserted into the NMR spectrometer. 

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