Acidic Property of BEA Zeolite Synthesized by Seed-directed Method

• Suganuma, Satoshi

• Zhang, Haiyan

• Yang, Chengguang

• Xiao, Feng-Shou

• Katada, Naonobu

Abstract

The acidic property of a BEA zeolite prepared by a seed-directed synthesis (SDS) method without organic structure directing agent (OSDA) was analyzed by a method of ammonia infrared / mass spectroscopic (IRMS) temperature-programmed desorption (TPD). The number of Brønsted acid sites on the SDS-BEA zeolite was larger than that on a conventional BEA zeolite synthesized from using OSDA. The enthalpy of ammonia desorption, distributed mainly in a range between 115 and 145 kJ mol-1, was in agreement with the acid strength region generated by isomorphous substitution of Si4+ by Al3+ in the BEA framework. These observations confirm that the microstructure around the incorporated Al in the SDS-BEA zeolite was equivalent to that in the conventional one.

Journal

• Journal of porous materials

  Journal of porous materials 23 (2), 415-421, 2016

  Springer

Keywords

• BEA zeolite
• Acidic property
• Seed-directed synthesis
• OSDA-free

Details

• CRID: 1050859779480315904
• NII Article ID: 120006543704
• NII Book ID: AA12120978
• ISSN: 15734854
• Web Site: https://repository.lib.tottori-u.ac.jp/records/7273
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • CiNii Articles
  • KAKEN