relation: https://khub.utp.edu.my/scholars/4403/
title: Effect of monoethanolamine loading on the physicochemical properties of amine-functionalized Si-MCM-41
creator: Ramli, A.
creator: Ahmed, S.
creator: Yusup, S.
description: Siliceous mesoporous molecular sieve (Si-MCM-41) material with highly ordered hexagonal pore arrangement was synthesized at 373 K for 8-days duration by hydrothermal method, dried at 393 K and calcined at 823 K in N2 atmosphere. The calcined Si-MCM-41 was later functionalized with 10-50 wt.  monoethanolamine (MEA) by impregnation method and dried in vacuum at 343 K. The MEA-Si-MCM-41 samples were characterized for their physicochemical properties with FTIR, XRD, TGA, HRTEM, FESEM, BET and elemental analysis. XRD results showed that the intensity of the characteristic peaks of Si-MCM-41 reduces with increasing loading of MEA indicating that the MEA molecules are loaded in the pores as well as on the surface of Si-MCM-41. The appearance of FTIR peaks corresponding to N-H, C-N and C-H bonds suggested that Si-MCM-41 has been functionalized with MEA. The presence of Si-O-Si peaks in FTIR spectra of MEA-Si-MCM-41 samples indicates that the hexagonal pore arrangement remains intact and this is supported by HRTEM images. FESEM images show that MEA-Si-MCM-41 samples became agglomerated with increase loading of MEA. TGA analyses show that the MEA-Si-MCM-41 samples are thermally stable up to 528 K. N2 adsorption-desorption isotherms show that the textural properties of Si-MCM-41 material slowly change from a mesoporous material to non-porous material as the MEA loading increases due to pore filling effect during functionalization with MEA. Detection of N, C and H by elemental analysis confirms the presence of MEA in MEA-Si-MCM-41 samples.
date: 2014
type: Article
type: PeerReviewed
identifier:   Ramli, A. and Ahmed, S. and Yusup, S.  (2014) Effect of monoethanolamine loading on the physicochemical properties of amine-functionalized Si-MCM-41.  Sains Malaysiana, 43 (2).  pp. 253-259.  ISSN 01266039     
relation: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894424249&partnerID=40&md5=0d6b102310b9b0a07c103f6f421b29fe