Design of an Organic Template for Synthesizing ITR Zeolites under Ge-Free Conditions

Germanosilicate zeolites with various structures have been extensively synthesized, but the syntheses of corresponding zeolite structures in the absence of germanium species remain a challenge. One such example is an ITR zeolite structure, which is a twin of the ITH zeolite structure. Through the mo...

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Vydané v:Journal of the American Chemical Society Ročník 145; číslo 31; s. 17284
Hlavní autori: Ma, Ye, Hu, Junyi, Fan, Kai, Chen, Wei, Han, Shichao, Wu, Qinming, Ma, Yanhang, Zheng, Anmin, Kunkes, Eduard, De Baerdemaeker, Trees, Parvulescu, Andrei-Nicolae, Bottke, Nils, Yokoi, Toshiyuki, De Vos, Dirk E, Meng, Xiangju, Xiao, Feng-Shou
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States 09.08.2023
ISSN:1520-5126, 1520-5126
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Shrnutí:Germanosilicate zeolites with various structures have been extensively synthesized, but the syntheses of corresponding zeolite structures in the absence of germanium species remain a challenge. One such example is an ITR zeolite structure, which is a twin of the ITH zeolite structure. Through the modification of a classic organic template for synthesizing ITH zeolites and thus designing a new organic template with high compatibility to ITR zeolite assisted by theoretical simulation, we, for the first time, show the Ge-free synthesis of an ITR structure including pure silica, aluminosilicate, and borosilicate ITR zeolites. These materials have high crystallinity, corresponding to an ITR content of more than 95%. In the methanol-to-propylene (MTP) reaction, the obtained aluminosilicate ITR zeolite exhibits excellent propylene selectivity and a long lifetime compared with conventional aluminosilicate ZSM-5 zeolite. The strategy for the design of organic templates might offer a new opportunity for rational syntheses of novel zeolites and, thus, the development of highly efficient zeolite catalysts in the future.
Bibliografia:ObjectType-Article-1
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content type line 23
ISSN:1520-5126
1520-5126
DOI:10.1021/jacs.3c04652