Pillaring of layered zeolite precursors with ferrierite topology leading to unusual molecular sieves on the micro/mesoporous border

Dalton Transactions : an International Journal of Inorganic Chemistry
Wieslaw J RothMichal Mazur

Abstract

Layered zeolite materials with FER layer topology can produce various condensed and expanded structures including zeolite frameworks, FER and CDO, their interlayer expanded forms (IEZ), and organic-intercalated and pillared derivatives. This work concerns pillaring of the surfactant-swollen derivative with a gallery height of ca. 2.5 nm between layers by treatment with tetraethylorthosilicate (TEOS) at room and elevated temperatures. The materials obtained at 100 °C and higher showed unusual properties including 2 nm pores on the micro/mesoporous border and disordered layer packing indicated by the absence of distinct low angle interlayer peaks at d-spacing >3 nm (∼3° 2θ Cu Kα radiation) in the X-ray diffraction pattern (XRD). TEOS treatment at room temperature produced a pillared molecular sieve with the expected mesoporous characteristics, namely a pore size of around 3 nm and a high intensity low angle (001) peak at 2.3° 2θ, and a d-spacing of 3.8 nm, in the XRD. The characterization aiming to elucidate the nature of the obtained unusual products included gas adsorption isotherms, aberration corrected (Cs-corrected) Scanning Transmission Electron Microscopy (STEM) studies and29Si solid state NMR. BET surface area values decr...Continue Reading

References

Dec 26, 2003·Angewandte Chemie·Weibin FanTakashi Tatsumi
Sep 17, 2004·Angewandte Chemie·Takuji IkedaFujio Mizukami
Apr 5, 2011·Journal of the American Chemical Society·Wieslaw J RothJiří Čejka
Jun 22, 2013·Nature Chemistry·Wieslaw J RothJiří Cejka
Jan 25, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Urbano Díaz, Avelino Corma
Feb 22, 2014·Chemical Reviews·Wieslaw J RothJiří Čejka
May 31, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·B MarlerH Gies
Jun 11, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·A Lerf
May 7, 2015·Chemical Society Reviews·Pavla EliášováJiří Čejka
Oct 23, 2015·Chemical Society Reviews·Wieslaw J RothPavla Eliášová
Dec 18, 2015·Nature Chemistry·Michal MazurRussell E Morris

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Citations

Apr 16, 2020·Materials·Emily SchulmanDongxia Liu
Aug 6, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Weronika StrzempekBarbara Gil
Aug 14, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Wen-Wen ZiHong-Bin Du
May 29, 2019·Journal of the American Chemical Society·Lu WeiDongxia Liu

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Methods Mentioned

BETA
X-ray
transmission electron microscopy
NMR
Scanning Transmission Electron Microscopy
electron microscopy

Software Mentioned

Micromeritics

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