In contrast, the Ni50-urea catalyst exhibited the second-highest catalytic activity despite exhibiting the highest pore volume and nickel surface area (0.77 cm g‐cat− 1 and 22 m g-cat− 1, respectively).
Adsorption study performed using Fe3O4/PVP (1 g) as adsorbent since it showed high surface area and the highest pore volume.
According to these diagrams, the sample with the catalyst that is milled for 10 h has the highest free surface with the smallest mean diameter of porosity and the highest pore volume.
In this study, the response surface method (RS M was applied for optimizing the most significant sol gel parameters to achieve the largest pore diameter and the highest pore volume.
A 100% dimer precursor fraction with an average molecular weight of 480 Da produced activated carbon fibers with the highest (specific) pore volume, and the highest pore volume in the range desired for hydrogen adsorption (6 7 Å).
The sample c-MCM-41(40) prepared with citric acid under microwave heating for 40 min possesses the highest pore volume and pore diameter among all the samples, as well as well-defined crystallinity and regular hexagonal array of mesoporous channels.
The results show that the family concrete with the highest pore volume and with the same compressive strength of 20, 30, and 40 MPa (2900, 4350, and 5800 psi) did not always correspond to the concrete family with the highest degree of carbonation.
Supercritical drying leads to the highest pore volume and the widest texture range, but residual surface tensions and shrinkage are not avoided when the pore size is small or when the material density is low; this hampers to fix both the pore volume and the pore size easily.
