Citation: LIU Li-ping, JIA Yu-hua. Pore structures of hierarchical porous molecular sieves observed by Ar adsorption[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(3): 379-384. shu

Pore structures of hierarchical porous molecular sieves observed by Ar adsorption

LIU Li-ping ^, ,
JIA Yu-hua

1.
State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China

Corresponding author: LIU Li-ping,
Received Date: 28 August 2014

Fund Project: 国家自然科学基金(21206017)。 (21206017)

Dual mesoporous, micro-mesoporous and mesoporous molecular sieves were prepared and their pore structures were characterized by Ar adsorption and X-ray diffraction (XRD). The calculation methods of pore size distribution for the hierarchical porous molecular sieves were studied, to reveal the relationships among the adsorption-desorption isotherm, pore size distribution, pore shape and pore volume. The results showed that SF and BJH methods are reliable for microporous and mesoporous pores of the hierarchical porous molecular sieves, respectively, whereas NLDFT method is appropriate to calculate the full range pore size distribution. For the synthesis of mesoporous TS-1 zeolite, TPAOH promotes not only the generation of mesopores, but also the secondary crystallization.
- Ar adsorption,
- hierarchical porous molecular sieve,
- pore structure,
- mesoporous
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