We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Disinfectant-Assisted Preparation of Hierarchical ZSM-5 Zeolite with Excellent Catalytic Stabilities in Propane Aromatization.
- Authors
Zhang, Peng; Zhuang, Jianguo; Yu, Jisheng; Guan, Yingjie; Zhu, Xuedong; Yang, Fan
- Abstract
A series of quaternary ammonium or phosphonium salts were applied as zeolite growth modifiers in the synthesis of hierarchical ZSM-5 zeolite. The results showed that the use of methyltriphenylphosphonium bromide (MTBBP) could yield nano-sized hierarchical ZSM-5 zeolite with a "rice crust" morphology feature, which demonstrates a better catalytic performance than other disinfect candidates. It was confirmed that the addition of MTBBP did not cause discernable adverse effects on the microstructures or acidities of ZSM-5, but it led to the creation of abundant meso- to marco- pores as a result of aligned tiny particle aggregations. Moreover, the generation of the special morphology was believed to be a result of the coordination and competition between MTBBP and Na+ cations. The as-synthesized hierarchical zeolite was loaded with Zn and utilized in the propane aromatization reaction, which displayed a prolonged lifetime (1430 min vs. 290 min compared with conventional ZSM-5) and an enhanced total turnover number that is four folds of the traditional one, owing to the attenuated hydride transfer reaction and slow coking rate. This work provides a new method to alter the morphological properties of zeolites with low-cost disinfectants, which is of great potential for industrial applications.
- Subjects
PHOSPHONIUM compounds; ZEOLITES; AROMATIZATION; PROPANE; TURNOVER frequency (Catalysis); QUATERNARY ammonium salts; INDUSTRIAL capacity
- Publication
Nanomaterials (2079-4991), 2024, Vol 14, Issue 9, p802
- ISSN
2079-4991
- Publication type
Article
- DOI
10.3390/nano14090802