Abstract This present study deals with the cross-linking of fungal β-glucosidase on Al2O3nanocrystals (NCs) synthesized inC. cajanfor in-suit genistein production. TheCajanus cajanleaves were dried and used to prepare their extract at 65 °C by agitation for 30 min. For enzyme production unde...
Given the following reactions : i) Cu (s) + 4HNO3 (aq) → Cu(NO3)2 (aq) + 2NO2 (g) + 2H2O (l) ii) Cu(NO3)2 (aq) + 2NaOH (aq) → Cu(OH)2 (s) + 2NaNO3 (aq) iii) Cu(OH)2 (s) &righta...
Aqueous solutions of the metal nitrates and the precipitating agent (NaOH/Na2CO3) were simultaneously dripped into beaker. The pH during precipitation in the stirred beaker was maintained at a constant value 8. After finishing the addition of the precipitation agent, the resultant slurry was aged ...
For example, the interface conduction remains unaffected when the capping alumina film is etched away by a 4-M aqueous NaOH solution. This strongly suggests that the effective charge carriers are mainly located on the STO side. Discussion As each layer of the (001)-oriented g-Al2O3/STO ...
Effect of surface acid properties of HNO3 and NaOH modified VO_x/Al2O3 catalysts on methanol selective oxidation was studied by solid-state nuclear magnetic resonance and X-ray powder diffraction (XRD) spectroscopy. The surface acidity including type and strength of the acid sites in the ...
Analysis of the inserts was performed before and after cleaning in a 30 vol % NaOH solution to remove the Al alloy built up at the cutting edge. Table 3. Overall set parameters used in the metallic matrix composite (MMC) turning. Insert v (m·min−1) f (mm·rev−1) DOC (mm) ...
On the other hand, the basic catalysts usually used in the biodiesel industry (KOH, NaOH, and potassium and sodium methoxides) have important drawbacks [4]. Although they could be replaced by heterogeneous solid catalysts to make their re-utilization possible, some issues concerning those ...
For the adsorption kinetic studies, four spheres were used in 100 mL of 200 mg/L Cd+2 solution, keeping the pH constant at 5 by adding 0.1 M NaOH or HNO3 at room temperature. The equilibrium data obtained from the adsorption experiments were fitted on Pseudo first order (1), Pseudo ...
Secondly, the effect of initial pH (from 5 to 12) was studied by varying the pH with 0.1 M NaOH or 0.1 M H2SO4, using the sorbent dosages obtained from preliminary tests (15 g/L for pseudoboehmite and 5 g/L for γ-Al2O3), maintaining the temperature and contact time at 20 °...