Dimensional Regulation of Titanosilicate by Kinetically Controlled Intergrowth Crystals

Dong Lin; Xiang Feng; Xiuhui ZhengYang XuHui ZhaoZhaoning SongLiang WangHonghong ShanFeng-Shou XiaoDe ChenChaohe Yang

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Dimensional Regulation of Titanosilicate by Kinetically Controlled Intergrowth Crystals

机译：Dimensional Regulation of Titanosilicate by Kinetically Controlled Intergrowth Crystals

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Dimensional regulation of titanosilicates from conventional 3D to revolutionary2D without extra additives is limited by the Ostwald ripening processtogether with the mismatch of hydrolysis rate between Ti and Si species.Herein, the kinetically controlled and additive-free strategy is devised tocontinuously regulate the dimensionality of intergrowth titanosilicate from 3Dbulk to 2D nanosheets. The kinetic relative growth rate of orthorhombic MFIto tetragonal MEL (r_(MFI)/r_(MEL)) dominated by temperature control can determinethe morphology of intermediates. Crisscross intermediates assembledby MFI branches along a direction and MEL connectors along a/b directionsrestrain the Ostwald ripening of titanosilicate and further transform into 2Dnanosheets (≈2 nm), which show enhanced olefin epoxidation performancedue to boosted diffusion ability. This kinetically controlled strategy unlocksgreen and efficient regulation of titanosilicate dimension.

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《Advanced functional materials》 |2023年第23期|2301179.1-2301179.9|共9页
作者
Dong Lin; Xiang Feng; Xiuhui ZhengYang XuHui ZhaoZhaoning SongLiang WangHonghong ShanFeng-Shou XiaoDe ChenChaohe Yang;
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作者单位

State Key Laboratory of Heavy Oil ProcessingChina University of PetroleumQingdao 266580, China;

Key Lab of Biomass Chemical Engineering of Ministry of EducationZhejiang UniversityHangzhou 310027, China;

Department of Chemical EngineeringNorwegian University of Science and Technology7491 Trondheim, Norway;

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正文语种英语
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2D zeolites; dimensional regulations; intergrowth crystals; kinetic controls; titanosilicates;

Dimensional Regulation of Titanosilicate by Kinetically Controlled Intergrowth Crystals

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