Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 57, Issue 1, Pages 1-7Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1387-1811(02)00531-0
Keywords
mechanical properties; ZSM-5; compression tests
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The micromechanical compressive response of siliceous ZSM-5 single-crystals (silicalite) has been measured using an in-house-built micromechanical tester. Single-crystals (similar to300 mum) were prepared using the method of Shimizu and Hamada [Angew. Chemie Int. Ed. 38 (1999) 2725]. High-quality crystals with no evident microcracks and which were optically transparent were subjected to measurements using single, cyclic and two-directional compression tests. ZSM-5 crystals are highly brittle and prone to microcracking. An average Young's modulus of similar to4 GPa was measured. No difference in Young's modulus between as-synthesized and calcined crystals is detected and little mechanical anisotropy is observed. The cyclic tests reveal gradual stiffness deterioration through a microcracking process. (C) 2002 Elsevier Science Inc. All rights reserved.
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