Single-step delamination of a MWW borosilicate layered zeolite precursor under mild conditions without surfactant and sonication

Journal of the American Chemical Society
Xiaoying OuyangAlexander Katz

Abstract

Layered borosilicate zeolite precursor ERB-1P (Si/B = 11) is delaminated via isomorphous substitution of Al for B using a simple aqueous Al(NO3)3 treatment. Characterization by PXRD shows loss of long-range order, and TEM demonstrates transformation of rectilinear layers in the precursor to single and curved layers in the delaminated material. N2 physisorption and base titration confirm the expected decrease of micropore volume and increase in external surface area for delaminated materials relative to their calcined 3D zeolite counterpart, whereas FTIR and multinuclear NMR spectroscopies demonstrate synthesis of Brønsted acid sites upon delamination. Comparative synthetic studies demonstrate that this new delamination method requires (i) a borosilicate layered zeolite precursor, in which boron atoms can be isomorphously substituted by aluminum, (ii) neutral amine pore fillers instead of rigid and large quaternary amine SDAs, and (iii) careful temperature control, with the preferred temperature window being around 135 °C for ERB-1P delamination. Acylation of 2-methoxynaphthalene was used as a model reaction to investigate the catalytic benefits of delamination. A partially dealuminated delaminated material displays a 2.3-fold e...Continue Reading

References

Oct 1, 1982·Biophysical Chemistry·J R Lakowicz, A Balter
Jul 12, 2001·Chemistry : a European Journal·I M van AmsterdamG W Canters
Jul 19, 2002·Chemical Communications : Chem Comm·Peng Wu, Takashi Tatsumi
Mar 9, 2006·Chemical Reviews·Giovanni Sartori, Raimondo Maggi
Jan 9, 2008·Journal of the American Chemical Society·Sudeep MaheshwariMichael Tsapatsis
Oct 28, 2008·Nature Materials·Wei FanMichael Tsapatsis
Apr 9, 2010·Angewandte Chemie·Jiuxing JiangAvelino Corma
Apr 5, 2011·Journal of the American Chemical Society·Wieslaw J RothJiří Čejka
Apr 15, 2011·Chemical Reviews·Giovanni Sartori, Raimondo Maggi
Jun 30, 2012·Science·Xueyi ZhangMichael Tsapatsis
Oct 23, 2012·Nature Materials·Elke VerheyenJohan A Martens
Jun 22, 2013·Nature Chemistry·Wieslaw J RothJiří Cejka

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Citations

Apr 23, 2015·Nature Chemistry·Russell E Morris, Jiří Čejka
Oct 23, 2015·Chemical Society Reviews·Wieslaw J RothPavla Eliášová
Jul 18, 2018·Chemical Society Reviews·Geo PaulLeonardo Marchese
Sep 1, 2018·Chemical Society Reviews·J PřechJ Čejka
Oct 21, 2015·Nature Communications·Sharon MitchellJavier Pérez-Ramírez
Apr 16, 2020·Materials·Emily SchulmanDongxia Liu
Mar 29, 2014·Dalton Transactions : an International Journal of Inorganic Chemistry·Xiaoying OuyangAlexander Katz
Oct 12, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Alexander OkrutAlexander Katz
Apr 14, 2020·Journal of the American Chemical Society·Yunwen ZhouJeffrey D Rimer

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