• CAS Science Spotlight Home
• Most Cited Journal Articles 2001-Chemistry
• About
• What's New

Home   •   Spotlight  •  bchem01  •  Most Cited Journal Articles 2001-Chemistry (10)

Most Cited Journal Articles 2001-Chemistry

Following is a CAS database record representing a highly cited journal article.

---

CAS indexed 20 chemical substances from this document. CAS subject entries for this document include: Silica gel, reactions; Adsorption; Pore; and 6 additional concepts.

CAPLUS COPYRIGHT 2002 ACS

TITLE:	A new family of mesoporous molecular sieves prepared with liquid crystal templates
AUTHOR(S):	Beck, J. S.; Vartuli, J. C.; Roth, W. J.; Leonowicz, M. E.; Kresge, C. T.; Schmitt, K. D.; Chu, C. T. W.; Olson, D. H.; Sheppard, E. W.; et al.
CORPORATE SOURCE:	Cent. Res. Lab., Mobil Res. and Dev. Corp., Princeton, NJ, 08543, USA
SOURCE:	J. Am. Chem. Soc. (1992), 114(27), 10834-43 CODEN: JACSAT; ISSN: 0002-7863
PUBLISHER:	American Chemical Society
LANGUAGE:	English

ABSTRACT:
The prepn., characterization, and proposed mechanism of formation of a new family of silicate/aluminosilicate mesoporous mol. sieves designated as M41S are described. MCM-41, 1 member of this family, exhibits a hexagonal arrangement of uniform mesopores whose dimensions may be engineered to .apprx.15->100 .ANG.. Other members of this family, including a material exhibiting cubic symmetry, were prepd. The larger pore M41S materials typically have surface areas >700 m2/g and hydrocarbon sorption capacities of .gtoreq.0.7 mL/g. A liq. crystal templating mechanism, in which surfactant (quaternary ammonium salts) liq. crystal structures serve as org. templates, is proposed for the formation of these materials. In support of this templating mechanism, the structure and pore dimensions of MCM-41 materials are intimately linked to the properties of the surfactant, including surfactant chain length and soln. chem. The presence of variable pore size MCM-41, cubic material, and other phases indicates that M41S is an extensive family of materials.