Hydrothermal synthesis of zeolite Y from green materials

Abstract

Several probes have been conducted by the scientific community to reduce emissions of greenhouse gases such as carbon dioxide (CO 2 ). A zeolitic material is capable of CO 2 adsorption with the aid of such technologies. Our present work is to efficiently synthesize zeolite Y with four Si/Al ratios (2.0, 2.5, 3.0, and 3.5) from green materials such as rice husk ash (source of Si) and metakaolin (source of Al). The method for preparing zeolite Y involves hydrothermal synthesis in a hydrodynamic reactor at 120 C temperature, for a reaction time of 24 hours. These synthetic zeolites represent high values for surface area as well as pore volume in micropore range and are compatible with the size of CO 2 molecules. The zeolite Y (with Si/Al ratio 3.5) has an absorption capacity of 3.35 mmol CO 2 /g at (900 kPa) pressure, thereby

Adsorption of CO2 Using “Sugar Cube”-Shaped Zeolite A Type Derived from Thermally Treated Kaolin and NaOH

“…Growing interest in microporous materials has encouraged researchers to find novel architectures, and this has led to the discovery of new synthetic zeolite materials, which have gained prominence in the commercial world. 23 Generally, zeolites are synthesized using a chemical source having silicon and aluminum. In recent decades, various studies have been conducted in exploring cost-effective raw materials which can be used for the synthesis of zeolites.…”

“…During the 20th century, the use of zeolites in industrial technology has increased. Growing interest in microporous materials has encouraged researchers to find novel architectures, and this has led to the discovery of new synthetic zeolite materials, which have gained prominence in the commercial world …”

Local silica sand as a silica source in the synthesis of Y zeolite

“…Zeolite X and zeolite Y are two zeolites that are of considerable interest. These zeolites are faujasite‐type zeolites (FAU), with a SiO 2 /Al 2 O 3 ratio of 2–3 for zeolite X and higher than 3 for zeolite Y 7,8 . Sodalite cages produce supercages that can contain spheres up to 1.2 nm in diameter, which are the primary structural components for this kind of zeolite.…”

“…These zeolites are faujasite-type zeolites (FAU), with a SiO 2 /Al 2 O 3 ratio of 2-3 for zeolite X and higher than 3 for zeolite Y. 7,8 Sodalite cages produce supercages that can contain spheres up to 1.2 nm in diameter, which are the primary structural components for this kind of zeolite. These large cavities are accessed by 12-membered oxygen rings having a free diameter of 7.4 Å, 9 which confer them molecular sieving capabilities.…”