Topic
MCM-41
About: MCM-41 is a research topic. Over the lifetime, 2355 publications have been published within this topic receiving 91416 citations.
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TL;DR: In this article, metal ions were incorporated into the pore channels of MCM-41 via a sol-gel method using X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), ultraviolet-visible (UV-vis) spectrophotometry, N2 adsorption-desorption measurements and Xray photoelectron spectroscopy (XPS).
48 citations
TL;DR: In this article, the authors used X-ray absorption spectroscopy (XAS) to obtain the valence states, bond lengths, and coordination numbers of the metal ion.
Abstract: MCM-41 type mesoporous silicas have been prepared in which one or more of the following elements are accommodated in framework sites: titanium, iron, chromium, vanadium, manganese, boron and aluminium. XRD and FTIR are used as aids to characterisation, which is achieved chiefly — and to a degree that arrives at valence states, bond lengths and coordination numbers of the metal ion — by X-ray absorption spectroscopy (XAS). Ti-containing MCM-41, as well as the Fe-, V- and Cr-containing variants, yield self-consistent, XAS-based, structural data of the respective metal-ion sites. Some of these (especially those containing Ti) are exceptionally good catalysts for the selective oxidation of large organic molecules such as limonene and norbornene.
48 citations
TL;DR: In this article, a magnetically recyclable catalyst for one-pot synthesis of N-aryl-2-amino-1,6-naphthyridine derivatives was proposed.
48 citations
TL;DR: In this paper, a simple covalently linked amine functionalized MCM-41 compound was investigated using mesoporous catalytic protocols as a highly efficient, heterogeneous and recyclable catalyst for the synthesis of a wide variety of quinazoline-2,4(1H,3H)-dione derivatives from 2-aminobenzonitriles and carbon dioxide in aqueous reaction medium.
48 citations
TL;DR: In this paper, the catalytic properties of hybrid Al- and Ti-MCM-41 materials were compared for HDS of thiophene and heavy vacuum gas oil (HVGO) derived from Maya crude.
48 citations