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Mesoporous Shell@Macroporous Core Aluminosilicates as Sustainable Nanocatalysts for Direct N ‐alkylation of Amines
Author(s) -
Sunil Sekhar Anandakumari C.,
Ashokkumar Anumol Erumpukuthickal,
Cygnet Choorapoikayil T.,
Vidhya Lakshmi Saseendranpillai,
Deepak Francis Leonard,
Vinod Chathakudath P.
Publication year - 2018
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.201800081
Subject(s) - aluminosilicate , alkylation , ammonium bromide , mesoporous material , catalysis , nanomaterial based catalyst , chemical engineering , materials science , zeolite , chemistry , inorganic chemistry , organic chemistry , pulmonary surfactant , engineering
Aluminosilicate spheres with a macroporous core and mesoporous shell (Si/Al ratio of 11) is synthesised by a sol‐gel method utilizing cetyltrimethyl ammonium bromide (CTAB) as a structure directing agent in basic medium. The selective incorporation of aluminium in the silica matrix results in the formation of aluminosilicates with an overall acidity of 0.32 mmol/g with interconnected pores. Direct N‐alkylation reaction is a prototype of C−N bond formation reaction and meso‐ macroporous aluminosilicate is shown to catalyze this reaction with excellent yield. The catalyst is tested and found sustainable for five catalytic cycles even without any high temperature regeneration step.