Title of article
Synthesis and Characterization of High Aluminum Zeolite X from Technical Grade Materials
Author/Authors
Masoudian, Kamal Research Institute of Petroleum Industry (RIPI) - Catalysis and Nanotechnology Research Division, ايران , Sadighi, Sepehr Research Institute of Petroleum Industry (RIPI) - Catalysis and Nanotechnology Research Division, ايران , Abbasi, Ali Research Institute of Petroleum Industry (RIPI) - Catalysis and Nanotechnology Research Division, ايران
From page
54
To page
60
Abstract
Zeolites are widely used as ion exchangers, adsorbents, separation materials and catalyst due to their well-tailored and highly-reproducible structures; therefore, the synthesis of zeolite from low grade resources can be interested. In the present work, high aluminum zeolite X was prepared from mixing technical grade so-dium aluminate and sodium silicate solutions at temperatures between 70°C and 100°C. The synthesized zeolite X was characterized by SEM and X-ray methods according to ASTM standard procedures. The re-sults showed that aging of the synthesis medium at the room temperature considerably increased the selec-tivity of zeolite X formation. On the other hand, high temperature of reaction mixture during crystallization formed zeolite A in the product; therefore, it decreased the purity of zeolite X. In addition, it was found that increasing H2O/Na2O and decreasing Na2O/SiO2 molar ratios in the reaction mixture resulted product with higher purity.
Keywords
Zeolite X , Crystallization , Synthesis , Aging , Sodium silicate
Journal title
Bulletin of Chemical Reaction Engineering & Catalysis
Journal title
Bulletin of Chemical Reaction Engineering & Catalysis
Record number
2672091
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