The assembly-disassembly-organization-reassembly mechanism for 3D-2D-3D transformation of germanosilicate IWW zeolite.
The assembly-disassembly-organization-reassembly mechanism for 3D-2D-3D transformation of germanosilicate IWW zeolite.
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DOI：
10.1002/anie.201400600
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发表时间：
2014-07-01
影响因子：
16.6
通讯作者：
Morris, Russell E
中科院分区：
文献类型：
--
作者：
Chlubna-Eliasova, Pavla;Tian, Yuyang;Pinar, Ana B;Kubu, Martin;Cejka, Jiri;Morris, Russell E
具有IWW结构的锗硅酸盐沸石的水解显示出取决于起始材料的组成的两种不同的结果。富锗IWW（Si/Ge=3.1）被分解成层状材料（IPC-5 P），其可以在用二乙氧基二甲基硅烷处理时重新组装成几乎纯的二氧化硅IWW。Ge-贫IWW（Si/Ge=6.4）在水解时不完全分解，但保留一些3D连接性。这种结构可以重新组装成IWW的掺入Al填充的缺陷时，Ge被删除。
Hydrolysis of germanosilicate zeolites with the IWW structure shows two different outcomes depending on the composition of the starting materials. Ge-rich IWW (Si/Ge=3.1) is disassembled into a layered material (IPC-5P), which can be reassembled into an almost pure silica IWW on treatment with diethoxydimethylsilane. Ge-poor IWW (Si/Ge=6.4) is not completely disassembled on hydrolysis, but retains some 3D connectivity. This structure can be reassembled into IWW by incorporation of Al to fill the defects left when the Ge is removed.