|
Useful Links |
|
|
Article Details :: |
|
|
| Article Name : | | | FTIR SPECTRA OF ADSORBED PYRIDINE ON H- USY-550-700 ZEOLITE AND STUDY OF METHYLATION OF O-TOLUIDINE OVER IT. | | Author Name : | | | K.U.GORE | | Publisher : | | | Ashok Yakkaldevi | | Article Series No. : | | | GRT-2353 | | Article URL : | |  | Author Profile View PDF In browser | | Abstract : | | | The methalation of o-toulidine on USY zeolite- is very complex and consisting of both parallel combination of N alkylation and C alkylation together. The study of effect of different modification of synthesized zeolite on the chemical reaction is studied in the present paper. The USY zeolite is highly stable .For its preparation, synthesized Na –Y zewolite is unstable at higher temperature and under hydrothermal reaction conditions hence its modification is necessary. This zeolite is ion exchanged to convert into NH4-Y using reflux method at 1000C with Ammonium Nitrate solution then filtered, washed with hot deionized water, several times to remove all the traces of NO3 from it , The sample prepared.is then dried at 1000C for 12h. The sample is further stabilized by treating carefully under controlled hydrothermal conditions at 550OC for 4h and then gradually cooling at the rate of 2oC/min. carefully to obtain the final product. and it is calcined it at 5000C,The process are repeated three times to convert it in to highly crystalline high silica H-Ultra stable-Y zeolite. The sample H-USY is then further treated carefully under controlled hydrothermal conditions at 700OC for 4h and then gradually cooling at the rate of 2oC/min. carefully to obtain the final product-USY-550-700. After each steam treatment the samples are ion exchanged thrice with NH4NO3 as per the above procedure. The USY-550-700 final sample is used for FTIR Spectra of adsorbed pyridine to study the type of acidity produced on the sample prepared. This sample is also tested in the chemical reaction as a catalyst to study the effect of acidity developed on it in the chemical reaction. The study of methylation of O-toludine by methenol at different temperatures over the sample USY-550-700. produced.. | | Keywords : | | - Synthesized Faujasite Na-Y zeolite,
|
|
|