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7694530 
Journal Article 
Synthesis of hierarchical nanocrystalline ZSM-5 with controlled particle size and mesoporosity 
Petushkov, A; Yoon, S; Larsen, SC; , 
2011 
1 
Microporous and Mesoporous Materials
ISSN: 1387-1811 
ELSEVIER SCIENCE BV 
AMSTERDAM 
92-100 
WOS:000284557000012 
Development of new zeolite based materials is essential for a variety of applications in catalysis separations and medicine Increasing the specific surface area and decreasing the micropore diffusion path-length in zeolites are important factors for improving the performance of zeolites in catalytic applications and these factors can be optimized by decreasing the zeolite particle size Creation of a hierarchical zeolite material that possesses both micro- and mesopores with very large surface areas and Improved mass transport properties is an effective solution In this study a facile approach to a one step Synthesis of nanocrystalline ZSM-5 zeolite from a single template system in 12-24 h at 140 degrees C and with high yield is presented ZSM-5 zeolite crystals as small as 6 nm which form mesoporous aggregates of approximately 200 nm in diameter were synthesized using this method The mesopore volume and size distribution showed a dependence on particle size such that smaller particles lead to higher mesopore volumes and narrower pore size distributions The size of individual crystals as well as mesopore surface area and pore volume can be controlled by adjusting the pH of the reaction mixture as well as the hydrothermal treatment temperature and duration (C) 2010 Elsevier Inc All rights reserved