Isopropylation of xylenes catalyzed by ultrastable zeolite Y (USY) and some other solid acid catalysts
Patra, CR; Kumar, R
| HERO ID | 1630791 |
|---|---|
| In Press | No |
| Year | 2002 |
| Title | Isopropylation of xylenes catalyzed by ultrastable zeolite Y (USY) and some other solid acid catalysts |
| Authors | Patra, CR; Kumar, R |
| Journal | Journal of Catalysis |
| Volume | 212 |
| Issue | 2 |
| Page Numbers | 216-224 |
| Abstract | The isopropylation of all three xylene isomers was carried out over ultrastable zeolite Y (USY) catalyst to give corresponding dimethyl (1-methylethyl) benzenes, or in other words dimethyl cumenes (DMCs), using isopropanol as alkylating agent. The effect of reaction temperature, space velocity, substrate-to-alkylating-agent molar ratio, and time-on-stream on conversion of xylene isomers and selectivity to dimethyl cumene was studied. Isopropylation of xylenes over USY gives quite high (80 to 95%) DMC selectivity among the dimethyl cumenes, along with a 70-90% yield of DMCs in total products with respect to limiting reagents, i.e., isopropylating agents at relatively low reaction temperatures (423 +/- 10 K) and at quite high xylene conversions (85-97% of theoretical maximum value). The solid acid catalysts zeolites H-Y, H-beta, H-mordenite, as well as silica-alumina and sulfated zirconia, were included for comparative studies in the isopropylation of m-xylene. (C) 2002 Elsevier Science (USA). |
| Doi | 10.1006/jcat.2002.3776 |
| Wosid | WOS:000179815000010 |
| Url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0036451270&doi=10.1006%2fjcat.2002.3776&partnerID=40&md5=3de5065620980312a73fa655b9c0601a |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000179815000010 |
| Is Public | Yes |
| Language Text | English |
| Keyword | isopropylation; xylenes; solid acid catalysts; zeolites; USY; formation of dimethyl (1-methyl ethyl) benzenes; dimethyl cumenes |