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ERIC Number: EJ1040111
Record Type: Journal
Publication Date: 2014-Sep
Pages: 5
Abstractor: As Provided
Reference Count: 12
ISSN: ISSN-0021-9584
Sol-Gel Application for Consolidating Stone: An Example of Project-Based Learning in a Physical Chemistry Lab
de los Santos, Desiree´ M.; Montes, Antonio; Sa´nchez-Coronilla, Antonio; Navas, Javier
Journal of Chemical Education, v91 n9 p1481-1485 Sep 2014
A Project Based Learning (PBL) methodology was used in the practical laboratories of the Advanced Physical Chemistry department. The project type proposed simulates "real research" focusing on sol-gel synthesis and the application of the obtained sol as a stone consolidant. Students were divided into small groups (2 to 3 students) to simulate a real-world research team. This procedure allowed students to explore the sol-gel transition from synthesis until dry gel (xerogel), and analyze the properties of the sol, gel, and xerogels (especially pore volume and pore size). Moreover, the students learned an example of an application of sol-gel materials (as a "stone consolidant") and were introduced to the use of several instrumental techniques such as nitrogen adsorption, Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), mercury intrusion porosimetry (MIP), and rheology measurement.
Division of Chemical Education, Inc and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Descriptive
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A