Nonionic emulsion-mediated synthesis of zeolite beta

Bulletin of materials science

Lishan Cui²  Ying Zhang¹  Chao Jin¹  Yuguo Shen¹  Ying Cao¹  Wei Gao¹ 

[1] Department of Materials Science and Engineering, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, China$$Department of Materials Science and Engineering, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, ChinaDepartment of Materials Science and Engineering, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, China$$;The State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, China$$The State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, ChinaThe State Key Laboratory of Heavy Oil Processing, China University of Petroleum, 18 Fuxue Road, Changping District, Beijing 102249, China$$

关键词: Zeolite beta;    zeolite ZSM-5;    nonionic emulsion system;    particle size;    crystal transformation.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Zeolite beta synthesis was first carried out in a newly developed emulsion system containing nonionic polyoxyethylated alkylphenol surfactant, which showed interesting non-conventional features. Compared to the conventional hydrothermal synthesis of zeolite beta, the reported nonionic emulsion system showed a faster nucleation rate. Furthermore, the emulsion system could stabilize the beta product and retarded its further transformation to ZSM-5 even under the high crystallization temperature at 453 K. Additionally, the beta particle size could be tuned by the adoption of different lengths of alkyl chain in the surfactant and cosurfactant. Control experiments showed each emulsion component played a crucial role in the zeolite beta growth. The approach proposed in this paper might be extended to apply for the syntheses of other types of zeolites with particle size under control.

【 授权许可】

Unknown