TRANSFORMATION OF NATURAL ANALCIME AND PHILLIPSITE DURING THEIR HYDROTHERMAL RECRYSTALLIZATION INTO ZEOLITES A AND X.
Journal Title: International Journal of Advanced Research (IJAR) - Year 2019, Vol 7, Issue 2
Abstract
The objective of the present work was to study transformation of Georgian natural zeolites, analcime and phillipsite, during their recrystallization in the aim to obtain zeolites A and X, widely used for adsorption, separation, ion exchange and catalysis. It is found that phase-pure zeolite NaA (Na11.25(25) (K,?Ca,?Mg)0.7(1) (Al11.95(25)Si12.3(3)O48).18H2O) can be prepared in the form of cubic/rhombus crystallites with uniform micrometric (3-5 μm) dimensions by hydrothermal crystallization (95oC) of aged (72 hr) at room temperature gel (4.5Na2O: 0.45Al2O3: 1SiO2: 178H2O) obtained from natural analcime, treated with hydrochloric acid before suspending in water and mixing with sodium hydroxide. Phase-pure zeolite NaX (|Na66(3) [K,?Ca,?Mg,?Cu,?Zn]12(1) (H2O)248(10)| (Al78(3)Si114(4)O384)) with specific surface area of 589 m2/g and total pore volume of 0.578 cm3/g can be prepared in the form of octahedral crystallites with uniform micrometric (2-7 μm) dimensions by hydrothermal crystallization (95oC) of aged (96 hr) at room temperature gel (2.9Na2O: 0.26Al2O3: 1SiO2: 150H2O) obtained from water suspension of natural phillipsite, treated with hydrochloric acid and mixed with sodium hydroxide. The resulting zeolites in their characteristics are competitive with commercially available materials.
Authors and Affiliations
Vladimer Tsitsishvili, Nanuli Dolaberidze, Nato Mirdzveli, Tekla Kapanadze, Ketevan Virsaladze.
Keywords
Related Articles
- EP ID EP482993
- DOI 10.21474/IJAR01/8479
- Views 51
- Downloads 0
EFFECTIVENESS OF STEM-BASED SCIENCE STUDENT WORKSHEET IN IMPROVING MULTIPLE REPRESENTATION ABILITY OF JUNIOR HIGH SCHOOL STUDENTS
This research aims to identify the effectiveness of STEM-based Science Student Worksheet in improving multiple representation abilities of junior high school students. This research is expected to be the basis to find ou...
ROLE OF CT SCAN IN STAGING OF CA URINARY BLADDER WITH HPE CORRELATION.
Introduction: Of every 10,000 people every 2 to 3 person will develop urinary bladder cancer. Direct examination via endoscopy remains the investigation of choice for evaluation of superficial urinary bladder lesions and...
PROMOTING TOURISM IN NIGERIA THROUGH AN ENHANCED TOURISM MANAGEMENT SYSTEM - A PRELIMINARY STUDY.
In an era where information plays a vital role in our society because its use is unavoidable inour day-to-day activities; tourism has become popular as a leisure way of travel and it relies on informationtechnologyinorde...
VALUE BASED EDUCATION: A NEED OF PRESENT SOCIETY.
Value education means inculcating in the children a sense of humanism that would build the nation and bring back to the people pride in work that brings order, security and assured progress. Present age is age of science...
EFFECTIVENESS OF VIDEO ASSISTED TEACHING ON SELF ASSESSMENT OF DAILY FETAL MOVEMENT COUNT(DFMC), AMONG PRIMIGRAVIDAE, IN SELECTED MATERNITY HOSPITALS AT BENGALURU.
Maternal perception of fetal movement is a valuable tool for early detection of fetal compromise. Fetal movement is a reliable sign of fetal well being. These early signs of fetal movement may at first be confused as sim...