Login / Signup

High-Throughput Synthesis and Structure of Zeolite ZSM-43 with Two-Directional 8-Ring Channels.

Tom WillhammarJie SuYifeng YunXiaodong ZouMobae AfeworkiSimon C WestonHilda B VromanWilliam W LonerganKarl G Strohmaier
Published in: Inorganic chemistry (2017)
The aluminosilicate zeolite ZSM-43 (where ZSM = Zeolite Socony Mobil) was first synthesized more than 3 decades ago, but its chemical structure remained unsolved because of its poor crystallinity and small crystal size. Here we present optimization of the ZSM-43 synthesis using a high-throughput approach and subsequent structure determination by the combination of electron crystallographic methods and powder X-ray diffraction. The synthesis required the use of a combination of both inorganic (Cs+ and K+) and organic (choline) structure-directing agents. High-throughput synthesis enabled a screening of the synthesis conditions, which made it possible to optimize the synthesis, despite its complexity, in order to obtain a material with significantly improved crystallinity. When both rotation electron diffraction and high-resolution transmission electron microscopy imaging techniques are applied, the structure of ZSM-43 could be determined. The structure of ZSM-43 is a new zeolite framework type and possesses a unique two-dimensional channel system limited by 8-ring channels. ZSM-43 is stable upon calcination, and sorption measurements show that the material is suitable for adsorption of carbon dioxide as well as methane.
Keyphrases
  • high throughput
  • electron microscopy
  • high resolution
  • carbon dioxide
  • single cell
  • mass spectrometry
  • computed tomography
  • magnetic resonance imaging
  • heavy metals
  • molecularly imprinted
  • solar cells