ChemCatChem p. 2660 - 2668 (2015)
Update date:2022-08-11
Topics:
Zuo, Yi
Liu, Min
Zhang, Ting
Meng, Changgong
Guo, Xinwen
Song, Chunshan
A facile method for the size-controllable synthesis of titanium silicalite-1 (TS-1) is presented. A tetrapropylammonium bromide hydrothermal system was used, and the amount of seeds (silicalite-1 suspension) and crystallization time were tuned to control the crystal size. The crystal size could be adjusted from 200 to 1200nm by varying the seed amount from 12 to 0.05wt%. Crystallization time plays a less important role than the seed amount on the crystal size. TS-1 samples with different crystal sizes were characterized and evaluated in propene epoxidation. The catalytic activity and selectivity of propene oxide are enhanced by decreasing the crystal size from 1200 to 200nm because the diffusion limitation is eliminated gradually. The seed is significant for this system, as a lack of seeds leads to poor crystallization and low catalytic activity. The mechanism of the seed function was studied by simulating the transformation process of the seed in the TS-1 synthesis system.
View MoreJiangsu Dacheng Pharmaceutical and Chemical Co.,Ltd
Contact:+86-0517-87036900
Address:Chuzhou Chemical park, Huai'an, Jiangsu Province
Hengshui Bangsheng Environmental Protection and Technology Co., Ltd
Contact:+86-318-2275966
Address:1956 Renmin Road, Hengshui city, Hebei, China
Penglai Qianwei Chemical Co., Ltd.
Contact:86-535-3357802
Address:Shahelu (north), Penglai, Shandong, China
Xi'an Unique Electronic and Chemical Co., Ltd.
Contact:+86-029-88238008
Address:1703# B BUILDING WEST ELECTRONIC ZONE, XI'AN, CHINA
Jinan Chenghuishuangda Chemical CO.,Ltd
website:http://www.jnchsd.com
Contact:+86-531-58897082
Address:No.2350, Kaituo Road, High-tech Development District, Jinan City, Shandong, China
Doi:10.1055/s-1974-23393
(1974)Doi:10.1016/j.jorganchem.2011.06.001
(2011)Doi:10.1016/j.ica.2005.10.009
(2006)Doi:10.1021/ja01522a045
(1959)Doi:10.1007/s10973-009-0560-z
(2010)Doi:10.1021/op990077b
(2000)