Controllable synthesis of ZSM-5 coatings on SiC foam support for MTP application

• Published in: Microporous and mesoporous materials 2012-11, Vol.162, p.152-158
• Main Authors: Jiao, Yilai, Jiang, Chunhai, Yang, Zhenming, Zhang, Jinsong
• Format: Article
• Language: English
• Subjects: Catalysis; Chemistry; Colloidal state and disperse state; Emulsions. Microemulsions. Foams; Exact sciences and technology; General and physical chemistry; Ion-exchange; MTP; Porous materials; Surface physical chemistry; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Zeolites: preparations and properties; ZSM-5 coating; ZSM-5/SiC foam composite
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2012.05.034

ZSM-5 coatings with controllable morphology were grown on SiC foam supports and exhibited substantial stability and yield improvement in comparison to zeolite pellets in the methanol to propylene reaction. [Display omitted] ► ZSM-5 coatings were grown on zeolite precursor modified SiC foam support. ► The synthesis conditions were optimized for improving the zeolite loading. ► The obtained composite catalyst showed high stability and yield in MTP reaction. ZSM-5 coatings with controllable morphology, Si/Al ratio, and loading were grown on SiC foam support with zeolite precursor modified surface. A homogeneous coverage of the support (15wt.% zeolite) by ZSM-5 crystals with an average crystal size of about 3.5μm was reached by controlling the amount of NaCl and TPAOH. The surface modification by the zeolite precursor gel layer ensured the strong anchoring and the loading of the zeolite crystals on the SiC support. The ZSM-5/SiC foam composite catalyst showed substantial stability and yield improvement in comparison to zeolite pellets in the methanol to propylene (MTP) reaction.