Mobil Composition of Matter

Mobil Composition of Matter

Mobil Composition of Matter (MCM) 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.

References

  1. Kresge, C. T., Leonowicz, M. E., Roth, W. J., Vartuli, J. C. and Beck, J. S. Nature, 1992. 359: 710-712.
  2. Beck, J.S., Vartuli, J. C., Roth, W. J., Leonowicz, M. E., Kresge, C. T., Schmitt, K. D., Chu, C. T. D., Olson, D. H., Sheppard, E. W., McCullen, S. B., Higgins, J. B. and Schlenker, J. L. J. Am. Chem. Soc., 1992. 114: 10834-10843.
  3. Beck, J. S. U.S. Patent 5, 057, 296. 1991.
  4. Huo, Q., Margolese, D. I., Ciesla, U., Denuth, D. G., Feng, P., Gier, T. E., Sieger, P., Firouzi, A., Chmelka, B. F., Schuth, F. and Stucky, G. D. Chem. Mater., 1994. 6: 1176-1191.
  5. Choma, J., Pikus, S. and Jaroniec, M. Appl. Surf. Sci., 2005. 252: 562-569.
  6. Hamoudi, S. and Belkacemi, K. J. Porous Mater., 2004. 11: 47-54.



Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • MCM — may stand for: Contents 1 Science and technology 2 Companies and organizations 3 Transportation …   Wikipedia

  • MCM — Multi Chip Module (Governmental » Military) Multi Chip Module (Academic & Science » Electronics) ** Mine Countermeasures (Governmental » Military) * Manual For Courts Martial (Community » Law) * Million Cubic Meters (Miscellaneous » Unit… …   Abbreviations dictionary

  • literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …   Universalium

  • Ali Omar Ermes — (Arabic:علي عمر الرميص) is an internationally renowned artist, writer, and speaker as well as a community activist; but above all, he is a thinker who never restricts his objective to one precinct [Mary Richardson, ‘The alphabet of Ali Omar… …   Wikipedia

  • Qatar — Qatari, adj., n. /kah tahr, keuh tahr /, n. an independent emirate on the Persian Gulf; under British protection until 1971. 665,485; 8500 sq. mi. (22,000 sq. km). Cap.: Doha. Also, Katar. * * * Qatar Introduction Qatar Background: Ruled by the… …   Universalium

  • Motor oil — For the TV documentary focused on the Edmonton Oilers of the National Hockey League, see Oil Change (TV Series). Motor oil sample Motor oil or engine oil is an oil used for lubrication of various internal combustion engines. The main function is… …   Wikipedia

  • Economic Affairs — ▪ 2006 Introduction In 2005 rising U.S. deficits, tight monetary policies, and higher oil prices triggered by hurricane damage in the Gulf of Mexico were moderating influences on the world economy and on U.S. stock markets, but some other… …   Universalium

  • St Peter's College, Auckland — Infobox NZ school name = St Peters College badge = motto = To Love and To Serve ( Amare et Servire ) type = Integrated Catholic Boys Secondary (Year 7 13) established = 1939 address = Mountain Road, Epsom, Auckland, New Zealand principal = K. F.… …   Wikipedia

  • Fluid catalytic cracking — (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high boiling hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products.cite book|author …   Wikipedia

  • Peru — Peruvian /peuh rooh vee euhn/, adj., n. /peuh rooh /, n. 1. Spanish, Perú /pe rddooh /. a republic in W South America. 24,949,512; 496,222 sq. mi. (1,285,215 sq. km). Cap.: Lima. 2. a city in N central Indiana. 13,764. 3. a city in N Illinois. 10 …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”