Differences between sodium metasilicate and silicic acid as silica source for zeolite y nanopartides synthesis by sol-gel method

الملخص EN

Zeolite Y nonparties were synthesized by sol-gel method.

Different samples using two silica sources were prepared.

Sodium met silicate (Na2Si03) (48 % silica) and since acid Sonica (H2Si03) (75 % silica) were employed as silica source and aluminum nitrate (Al (N03)3.9H20) was the aluminum source with tetrapropylammonium hydroxide (TPAOH) as tinplating agent.

The synthesized samples were characterized by X-ray diffraction, showed the requirement of different aging time for complete crystallization to be achieved.

Transmission Electronic Microscope (TEM) images, showed the particles were in the same range of 30-75 nm.

FT-IR spectroscopy, showed the synthesized samples having the zeolite Y crystal properties.

The initial mixing silica to alumina ratio (Si02 / Al203) was 10, but, sodium met silicate sample was of 2.55 final ratio, while silicic acid sample have 18.41 and the surface area as tested by BET was of 555.87 m2 / from sodium met silicate sample and 276.3 m2 / from silicic acid sample.