ACIDITY OF MODIFIED MORDENITES SYNTHESIZED FROM RICE HUSK SILICA AND CATALYTIC TRANSFORMATION OF METHYLBUTYNOL
- Resource Type
- article
- Authors
- Sittichai Kulawong; Sanchai Prayoonpokarach; Frank Roessner; Jatuporn Wittayakun
- Source
- Química Nova, Vol 38, Iss 2, Pp 191-195 (2015)
- Subject
- mordenite modification
acidity
methylbutynol
Chemistry
QD1-999
- Language
- English
Spanish; Castilian
Portuguese
- ISSN
- 1678-7064
0100-4042
Mordenite (MOR) was synthesized using rice husk silica and modified by base (B), acid (A) or acid-base (AB) and converted to H-form. The modification did not destroy the MOR structure but increased surface area and generated mesopores. Lewis acidity of the parent and modified MOR samples investigated by aluminum NMR and NH3-TPD showed a decrease in the following order: HMOR > BMOR > ABMOR > AMOR. For the catalytic transformation of methylbutynol, ABMOR provided the highest conversion and selectivity of products from acid sites.