Synthesis of thermally stable SBT and SBS/SBT intergrowth zeolites

doi:10.1126/science.abi7208

GSTDTAP > 气候变化

DOI	10.1126/science.abi7208
	Synthesis of thermally stable SBT and SBS/SBT intergrowth zeolites
	Hwajun Lee; Jiho Shin; Kyounghwan Lee; Hyun June Choi; Alvaro Mayoral; Na Young Kang; Suk Bong Hong
	2021-07-02
发表期刊	Science
出版年	2021
英文摘要	Zeolites with very large cages, such as zeolite Y, are rare but extremely useful in processing the large hydrocarbons in petroleum. Lee et al. report a route for preparing thermally stable forms of the large-cage phosphate-based molecular sieves UCSB-6 and UCSB-10 (see the Perspective by Xie). They used mainly sodium and cesium ions as inorganic structure-directing agents, along with an organic molecule, in their charge-density mismatch approach. These zeolites were used as diesel-cracking catalysts at 600°C. Science , abi7208, this issue p. [104][1]; see also abj1834, p. [28][2] UCSB-6 (framework type SBS ) and UCSB-10 ( SBT ), two three-dimensional phosphate-based molecular sieves with supercages accessible through 12-ring (circumscribed by 12 tetrahedral atoms) windows, are structurally similar to the hexagonal and cubic polytypes of faujasite or zeolite Y, an industrially relevant catalyst, but the cage structures are substantially different. Nonetheless, their inherent thermal instability has precluded any catalytic application so far. By using multiple inorganic cation and charge density mismatch approaches, we synthesized PST-32 and PST-2, a thermally stable aluminosilicate version of UCSB-10 and the hypothetical SBS / SBT intergrowth family member, respectively. This study suggests that many hypothetical cage-based zeolite structures with multidimensional channel systems can be synthesized as compositionally robust forms by systematically exploring the synergy effect of inorganic and organic structure–directing agents. [1]: /lookup/doi/10.1126/science.abi7208 [2]: /lookup/doi/10.1126/science.abj1834
领域	气候变化 ; 资源环境
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引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/334187
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Hwajun Lee,Jiho Shin,Kyounghwan Lee,et al. Synthesis of thermally stable SBT and SBS/SBT intergrowth zeolites[J]. Science,2021.
APA	Hwajun Lee.,Jiho Shin.,Kyounghwan Lee.,Hyun June Choi.,Alvaro Mayoral.,...&Suk Bong Hong.(2021).Synthesis of thermally stable SBT and SBS/SBT intergrowth zeolites.Science.
MLA	Hwajun Lee,et al."Synthesis of thermally stable SBT and SBS/SBT intergrowth zeolites".Science (2021).