Precise control of the size of zeolite B-ZSM-5 based on seed surface crystallization
发布时间：2019-03-12
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2017-01-01
- 发表刊物：
- RSC ADVANCES
- 收录刊物：
- Scopus、EI、SCIE
- 文献类型：
- J
- 卷号：
- 7
- 期号：
- 60
- 页面范围：
- 37915-37922
- ISSN号：
- 2046-2069
- 摘要：
- A series of boron-containing ZSM-5 (B-ZSM-5) catalysts with particle sizes from similar to 153 nm to similar to 14.2 mu m are synthesized by regulating the addition of silicalite-1 seeds. The B-ZSM-5 particle size with seed addition (D), the seed addition amount (x), the seed particle size (d) and the B-ZSM-5 particle size without seed addition (D-0) are related with by the new function D-3 = d(3)D(0)(3)/[xD(0)(3) + (1-x)d(3)], and the particle size of B-ZSM-5 has been precisely controlled and predicted in both micro (TPABr as template) and nano (TPAOH as template) synthesis systems. The function also shows the evolution of B-ZSM-5 particle size versus the seed amount and size, which helps guide the synthetic choice of the seed amount used or decreasing the seed size to decrease the B-ZSM-5 size for a specific synthesis system. Furthermore, the effect of particle size on the catalytic performance of B-ZSM-5 for the methanol to propylene (MTP) reaction is also investigated. The addition of 1 wt% similar to 74 nm seeds to the synthesis system improves the resulting catalyst lifetime from 46 h to 794 h.
- 第一作者
- Dai, Chengyi
- 合写作者
- Nie, Changhong,Song, Chunshan,Guo, Xinwen,Li, Junjie,Zhang, Anfeng
- 通讯作者
- Guo, XW (reprint author), Dalian Univ Technol, Sch Chem Engn, State Key Lab Fine Chem, PSU DUT Joint Ctr Energy Res, Dalian 116024, Peoples R China.