Biodiesel Production from N. oculata Microalgae Lipid in the Presence of Bi2O3/ZrO2 Catalysts

Tailoring the surface area and the acid–base properties of ZrO2 for biodiesel production from Nannochloropsis sp.

“…Meanwhile, the strength of the acidic/basic sites was denoted by the desorption temperature. For ZrO 2 , the desorption peaks below 250 °C could be attributed to weak acidic/basic sites, the adsorption peaks between 250 °C and 500 °C corresponded to acid/basic sites of medium strength, and the adsorption peaks over 500 °C represented strong acidic/basic sites 56 . Overall, it was proven that the surfactant-assisted nanoparticles increased the number and the density of the total acidic/basic sites compared to bare ZrO 2 .…”

“…The surface area, total pore volume, and pore size distribution were acquired from nitrogen adsorption–desorption isotherms using an adsorption porosimeter (Micromeritics ASAP 2020) at 78 K. Prior to the measurement, the catalyst was treated in vacuum at 200 °C to remove the moisture adsorbed from the catalyst surface and pores 56 .…”

“…Then, the samples were purged with He at a rate of 20 mL/min for 20 min to avoid physisorption and remove the remaining NH 3 or CO 2 . Finally, the desorption of NH 3 or CO 2 was performed under He flow at a rate of 20 mL/min, and the samples were heated up to 700 °C at a rate of 10 °C/min, where they were maintained for 60 min 56 .…”

A Review of Phycoremediation of Heavy Metals in Industrial Waste Water

“…However, organic compounds which play the role as ligands are not the same in every type of phytoplankton, depending on physiological conditions (Imani et al, 2011;Rahman et al, 2019). Through the active process N. oculata can synthesize metal-chelating proteins (Purnamawati et al, 2013).…”

Accelerated H2 activation over Pt/M-ZrO2 for the reductive amination of levulinic acid esters under benign conditions

“…S5 † and Table 3). 47,48 Meanwhile, T-ZrO 2 exhibited a minor peak attributed to weak-moderate acidic sites and a relatively intense peak at 660 °C corresponding to strong acidic sites, with a total number of acidic sites of 63 μmol g −1 (Fig. S5 † and Table 3).…”