Hollow ZSM-5 with Silicon-Rich Surface, Double Shells, and Functionalized Interior with Metallic Nanoparticles and Carbon Nanotubes
发布时间：2019-03-09
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2015-12-22
- 发表刊物：
- ADVANCED FUNCTIONAL MATERIALS
- 收录刊物：
- Scopus、EI、SCIE
- 文献类型：
- J
- 卷号：
- 25
- 期号：
- 48
- 页面范围：
- 7479-7487
- ISSN号：
- 1616-301X
- 关键字：
- double shells; functionalized interior; hollow ZSM-5; silicon-rich surface; TPAOH treatment
- 摘要：
- Hollow ZSM-5 single crystals with silicon-rich exterior surface are prepared by a dissolution-recrystallization strategy in tetrapropylammonium hydroxide solution. Selective dissolution and exterior recrystallization cause the silicon components to migrate from the inside to outside, resulting in a regular void in the interior of the crystal, increased Bronsted acid sites and a silicon-rich external surface. The as-prepared hollow ZSM-5 exhibits excellent acid catalysis with enhanced shape selectivity, as shown in biphenyl methylation as a probe reaction, which is attributed to the silicon-rich external surface and thus the inhibition of isomerization on external surface. More interestingly, hollow ZSM-5 single crystals with double shells are successfully prepared by layer-by-layer technique followed with dissolution-recrystallization strategy. Furthermore, hollow ZSM-5 encapsulating iron and carbon nanotubes are successfully synthesized. Furthermore, hollow ZSM-5 nanosized crystals with the interior functionalized as bimetallic (oxide) nanoparticles such as CuO-Pd are also successfully synthesized.
- 第一作者
- Dai, Chengyi
- 合写作者
- Liu, Min,Guo, Xinwen,Song, Chunshan,Zhang, Anfeng
- 通讯作者
- Dai, CY (reprint author), Dalian Univ Technol, Sch Chem Engn, PSU DUT Joint Ctr Energy Res, State Key Lab Fine Chem, Dalian 116024, Peoples R China.