Compendium of Zeolite Framework Types: Building Schemes and by Henk van Koningsveld

By Henk van Koningsveld

This compendium describes all recognized zeolite framework forms. the 1st half offers a pictorial description of ways the framework might be outfitted utilizing periodic development devices (PerBUs). The PerBUs are outfitted from smaller devices composed of a constrained variety of T-atoms (such as Si, Al, P, Ga, B, Be etc.) via employing easy operation(s) to the smaller unit, e.g. translation, rotation. The zeolite framework kinds are analysed by way of those part PerBUs. the second one half covers the bigger cages, cavities and/or channels within the zeolite framework including the framework sort codes (FTCs) within which they seem. additionally, appendices are integrated for easy-referencing. appendices are further. the 1st giving a survey of cages as variety features with their FTCs. the second one summarizing these channels and cavities that seem in additional than one framework kind.
The Compendium of Zeolite Framework Types includes complementary info to the information within the "Atlas of Zeolite Framework kinds" (Baerlocher et al (2001) Elsevier, London). The latter includes the topological symmetry, unit cellphone information and pore dimensions.

* How zeolites may be equipped utilizing basic development units
* Description of the channels and cages in all zeolites recognized to date
* Survey of these channels and cages that seem in additional than one zeolite

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AFT belongs to the ABC-6 family (see Introduction). C b b B A A a a Fig. 1. PerBU (left) and definition of 6-ring positions used in the stacking modes (right). 2. Connection mode Neighboring PerBUs can be connected along c through tilted 4-rings in three different ways (see Introduction). In AFT all three connection modes between the PerBUs are observed. chab Cavities are formed (see Figure 2 and CHA). A B B C C A c A C C B B A A acos30 Fig. 2. Connection mode (left) and unit cell content (right) viewed along b.

10-Rings are formed as illustrated in Figure 2. b a b a Fig. 2. Connection mode (left) and unit cell content 1 (right) viewed along c. For clarity, only 1ᎏ2ᎏ repeat unit along c of each PerBU is drawn. 27 Cage/Channel AFO 3. Channels and/or cages The non-interconnecting 10-ring channels, parallel to c, are topologically equivalent to the channels in AEL and AHT. One channel is depicted in Figure 3. {1 [610102/2] [001] (10-ring)} c Fig. 3. Channel viewed perpendicular to the channel axis (left) and along the channel axis (right).

1. PerBU viewed along c (left) and along [120] (right). 2. Connection mode Neighboring PerBUs, related along c by a pure translation, are connected along c through single T–T bonds. 8-Rings are formed (Figure 2). c a Fig. 2. Connection mode and unit cell content viewed along [120]. 37 AFY Cage/Channel 3. Channels and/or cages Intersecting 8- and 12-ring channels are parallel to Ͻ100Ͼ and c, respectively. The channel intersection, depicted in Figure 3, is topologically equivalent to the channel intersection in AFS and BPH.

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