Mobil Crystalline Material (MCM) (not Mobil Composition of Matter) is the initial name given for a series of mesoporous materials that were first synthesized by Mobil's researchers in 1992. MCM-41 (Mobil Composition of Matter No. 41) and MCM-48 (Mobil Composition of Matter No. 48) are two of the most popular mesoporous molecular sieves that are keenly studied by researchers.
The most striking fact about the MCM-41 and MCM-48 is that, although composed of amorphous silica wall, they possess long range ordered framework with uniform mesopores. These materials also possess large surface area, which can be up to more than 1000 m2g-1. Moreover, the pore diameter of these materials can be nicely controlled within mesoporous range between 1.5 to 20 nm by adjusting the synthesis conditions and/or by employing surfactants with different chain lengths in their preparation.
MCM-41 and MCM-48 have been applied as catalysts for various chemical reactions, as a support for drug delivery system and as adsorbent in waste water treatment.
MCM-41 is used mesoporous material. For example, it is handled an adsorbent. It is similar material FCM-16.
Famous quotes containing the words composition and/or matter:
“It is my PRIDE, my damnd, native, unconquerable Pride, that plunges me into Distraction. You must know that 19-20th of my Composition is Pride. I must either live a Slave, a Servant; to have no Will of my own, no Sentiments of my own which I may freely declare as such;Mor DIEperplexing alternative!”
—Thomas Chatterton (17521770)
“Were that enough, bone, blood, and sinew,
The twisted brain, the fair-formed loin,
Groping for matter under the dogs plate,
Man should be cured of distemper.
For all there is to give I offer:
Crumbs, barn, and halter.”
—Dylan Thomas (19141953)