caa a22 4500 606196129 CHVBK 20210128100922.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10934-014-9903-7 doi (NATIONALLICENCE)springer-10.1007/s10934-014-9903-7 Synthesis and characterization of novel bifunctional mesoporous silica catalyst and its scope for one-pot deacetalization-knoevenagel reaction [Elektronische Daten] [Surjyakanta Rana, Suresh Maddila, Ramakanth Pagadala, Sreekantha Jonnalagadda] Bifunctional (both sulfonic and amine functionalized) mesoporous silica catalysts were prepared by hydrothermal method. (3-[2-(2-amino ethyl amino) ethyl amino] propyl trimethoxysilane) and (3-mercaptopropyl) trimethoxysilane respectively were used as amine and sulfonic sources. The synthesised bifunctional materials were fully characterized by BET, P-XRD, 29Si CPMAS-NMR, FTIR, XPS and SEM spectral analysis. FTIR and NMR results endorse the successful grafting of organic amines and sulfonic group by surface silanol of silica. The presence of of N and S groups in the catalyst material was confirmed by the XPS spectra. Catalytic activity of the bifunctional material was tested for one-pot deacetalization-knoevenagel reaction, which gave excellent yield (95%). Catalyst is reusable with little loss of activity up to 4 runs (<6%). Springer Science+Business Media New York, 2015 Mesoporous silica nationallicence Sulfonic acid functionalization nationallicence Amine functionalization nationallicence One-pot reaction nationallicence Deacetalization-knoevenagel reaction nationallicence Rana Surjyakanta School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut Maddila Suresh School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut Pagadala Ramakanth School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut Jonnalagadda Sreekantha School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 353-360 1380-2224 22:2<353 2015 22 10934 https://doi.org/10.1007/s10934-014-9903-7 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10934-014-9903-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rana Surjyakanta School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut NATIONALLICENCE 700 1- Maddila Suresh School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut NATIONALLICENCE 700 1- Pagadala Ramakanth School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut NATIONALLICENCE 700 1- Jonnalagadda Sreekantha School of Chemistry and Physics, University of KwaZulu-Natal, Westville Campus, Chiltern Hills, 4000, Durban, KwaZulu-Natal, South Africa aut NATIONALLICENCE 773 0- Journal of Porous Materials Springer US; http://www.springer-ny.com 22/2(2015-04-01), 353-360 1380-2224 22:2<353 2015 22 10934