Gel-like properties of MCM-41 material and its transformation to MCM-50 in a caustic alkaline surround

Saputra, Hens and Othman, Raihan and Sutjipto, Agus Geter Edy and Muhida, Riza and Ani, Mohd Hanafi (2012) Gel-like properties of MCM-41 material and its transformation to MCM-50 in a caustic alkaline surround. Materials Research Bulletin, 47 (3). pp. 732-736. ISSN 0025-5408

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Abstract

MCM-41 material, prepared by sol–gel method, reveals gel-like properties in a caustic alkaline environment, i.e., 6 M potassium hydroxide (KOH) electrolyte. The gellation of MCM-41 starts at a KOH weight ratio of 40 wt.%. The structural change of the material is verified with X-Ray diffractograms and supported by observation using Scanning Electron Microscope (SEM). As the KOH weight ratio increases, the MCM-41 hexagonal arrays structure gradually transforms into MCM-50 lamellar structure before disappearing completely at 80 wt.% KOH. The MCM gel phase is further characterized by rotational viscometry and texture analysis. The gel phase shows shear thinning or pseudoplastic behavior and possesses homogeneous matrix structure.

Item Type:	Article (Journal)
Additional Information:	2593/12366
Uncontrolled Keywords:	Inorganic compounds; A. Nanostructures; C. X-ray diffraction; D. Elastic properties; D. Electrochemical properties
Subjects:	Q Science > QD Chemistry T Technology > TN Mining engineering. Metallurgy > TN799.5 Nonmetallic minerals T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Raihan Othman
Date Deposited:	18 Jun 2012 10:39
Last Modified:	18 Jun 2012 10:39
URI:	http://irep.iium.edu.my/id/eprint/12366

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