Amino-functionalized MCM

Fe anchored amino-functionalized MCM-41 effectively adsorbs toxic oxyanions, arsenate, chromate, selenate and molybdate, in the aqueous solution. These adsorbents show ones of the largest adsorption capacities reported in the literature. The molar ratio, oxyanion / Fe, is 2.8, 1.8, 1.5 and 2.3, respectively. They are consistent with the coordination mmibers in the EXAFS structural analysis of adsorption complexes. Cr-Fe adsorption centre is uniform, where 2 1 complex is uniformly generated. On the contraiy, chloride ion remains in As- and Se-Fe complexes and two kinds of coordination with different bonding distances were found in As- and Mo-Fe complexes. 

One of the most studied drugs is ibuprofen. Because of the presence of a carboxyl group, ibuprofen can be easily loaded on amino-functionalized MCM-41 [37b] and... 

M. Mirza-Aghayan, T. Baie Lashaki, M. Rahimifard, R. Boukherroub, A. A. Tarlani, J. Iran. Chem. Soc. 2011, 8, 280-286. Amino-functionalized MCM-41 base-catalyzed one-pot synthesis of 2-amino-5,6-dihydropyrimidin-4(3fl)-ones. 

Yoshitake, H Yokoi, T and Tatsumi, T. (2002) Adsorption of chromate and arsenate by amino-functionalized MCM-41 and SBA-1. Chem. Mater., 14, 4603-4610. 

M. Mirza-Aghayan, S. Nazmdeh, R. Boukherroub, M. Rahimifard, A.A. Tarlani, M. Abolghasemi-Malakshah, Convenient and efficient one-pot method for the synthesis of 2-amino-tetrahydro-4H-chromenes and 2-amino-4H-benzo[/ ]-chromenes using catalytic amount of amino functionalized MCM-41 in aqueous media, Synth. Commun. 43 (2013) 1499-1507. 

H2NCH2CH2NHCH2CH2CH2 Si(OCH3)3) and heated to 383 K in dry nitrogen for 6 h. The powder was collected by filtration, washed with 2-propanol for 2 h and dried at 373 K. We denote this diamino-functionalized silica as en-MCM-41. The amino functionalized silica powders were stirred in 0.1 M 2-propanol solution of FeCls at room temperature for 2 h, washed two times with 2-propanol and dried in an oven. The Fe -anchored en-MCM-41 is denoted as Fe/en-MCM-41. 

Chi et al. employed 3-(2-amino-ethylamino)propyl functionalized MCM-41 support to immobilize Cu(ll) for the preparation of a new heterogeneous copper catalyst. The MCM-41 support was functionalized by treating it with 3-(2-amino-ethylamino)propyl trimethoxysilane in toluene at 100 °C for 24 h followed by the addition of trimethyl-sillyl chloride at room temperature for 24 h. Then the functionalized support was subjected to reaction with copper sulfate in DMF at room temperature for 7h to obtain the desired catalyst (Scheme 61). The catalyst which appears as a pale blue powder was fully characterized by ICP-AES and XRD analyses. It has been foxmd that the catalyst is neutral in nature and showed higher catalytic activity than CUSO4. 

Mann and coworkers proposed a unique method to prepare nanohybrids of mesoporous silica and gold nanoparticles mediated by programmed DNA hybridization, as illustrated in Figure 4.21 [186], MCM-41 nanoparticles were first functionalized with a 3 -amino-terminated 12-base single strand oligonucleotide... 

Furthermore, MCM-41, MCM-48, and SBA-15 silica materials have been lined/ functionalized with, for example, alkyl,104 105 amino or aminopropyl groups,106-120 diamine,121,122 triamine,122,123 ethylenediamine,124 imidazole,120,125-127 triazol,120 A-benzylidenebutan-1 -amine,128 malonamide,129 carboxy(late),108,112,114... 

Cauvel, A., Renard, G. and Brunei, D. Monoglyceride synthesis by heterogeneous catalysis using mcm-41 type silicas functionalized with amino groups. J. Org. Chem., 1997, 62, 749-751. 

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