Microporous and Mesoporous Materials, 2018
Preparation of nanosized SSZ-13 zeolite with enhanced hydrothermal stability by a two-stage synthetic method
Ce Peng, Zhendong Liu, Aoki Horimoto, Chokkalingam Anand, Hiroki Yamada, Koji Ohara, Sohei Sukenaga, Mariko Ando, Hiroyuki Shibata, Takahiko Takewaki, Rino R. Mukti, Tatsuya Okubo, Toru Wakihara,
a Department of Chemical System Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
b JASRI/SPring-8, Kouto 1-1-1, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
c Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
d Graduate School of Engineering, Tohoku University, 6-6-04 Aramaki, Aoba-ku, Sendai 980-8579, Japan
e Mitsubishi Chemical Group, Science and Technology Research Center, INC. Inorganic Functional Material Lab, Kamoshida-cho, Aoba-ku, Yokohama 227-8502, Japan
f Division of Inorganic and Physical Chemistry, Research Center for Nanosciences and Nanotechnology, Institut Teknologi Bandung, JI. Ganesha 10, Bandung 40132, Indonesia
Abstract
Improving the hydrothermal stability of zeolites promises attractive benefits for catalytic applications, especially in the case of nanosized zeolite. In the present study, a two-stage synthetic method, conducted at low (95 °C) and high (210 °C) temperatures sequentially, was developed to prepare nanosized SSZ-13 zeolite with enhanced hydrothermal stability. The crystal size was tuned within 50–300 nm by simply controlling the period in either stage. In addition, compared with the microsized counterparts, the nanosized SSZ-13 zeolite showed remarkably enhanced hydrothermal stability with exhibiting equivalent catalytic performance in the selective catalytic reduction of NOx by ammonia (NH3-SCR). The improved hydrothermal stability of nanosized zeolite was due to the structural healing by the high temperature treatment.
http://www.sciencedirect.com/science/article/pii/S1387181117305140
