Screw-like morphology of silicoaluminophosphate-11 (SAPO-11) crystallized in ethanol medium

I. A. Tiuliukova, N. A. Rudina, A. I. Lysikov, S. V. Cherepanova, E. V. Parkhomchuk

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Silicoaluminophosphate-11 (SAPO-11) crystals were synthesized in different media – water and ethanol – by the two-stage hydrothermal method using ultrasonic pretreatment of precursor mixture. Changing of the synthesis medium from water to ethanol leads to transformation of SAPO-11 morphology: from pseudo-spherical aggregative crystals to novel screw-like morphology. SAPO-11 crystals, synthesized in ethanol medium (Et-SAPO-11), have remarkable textural properties: the greater values of BET surface area and micropore/mesopores volume, compared with crystals, obtained in the water medium (W-SAPO-11). Besides, the acidity of Et-SAPO-11 is lower than that of W-SAPO-11 due to hindered incorporation of silicon into aluminophosphate lattice in ethanol medium.

Original languageEnglish
Pages (from-to)61-64
Number of pages4
JournalMaterials Letters
Volume228
DOIs
Publication statusPublished - 1 Oct 2018

Keywords

  • Crystal morphology
  • Ethanol medium
  • Porous materials
  • SAPO-11
  • Silicoaluminophosphate
  • Texture
  • SILICON
  • HYDROISOMERIZATION
  • MOLECULAR-SIEVES
  • NONAQUEOUS MEDIA
  • PT/SAPO-11
  • ALKENES
  • CATALYTIC-PROPERTIES
  • IMPROVEMENT

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