Hydrothermal Synthesis of New Pure Beryllophosphate Molecular Sieve Phases from Concentrated Amines
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- 作者：Haoyu Zhang ; Minqin Chen ; Zhan Shi ; Xianhui Bu ; Yaming Zhou ; Xin Xu ; and Dongyuan Zhao
- 刊名：Chemistry of Materials
- 出版年：2001
- 出版时间：June 2001
- 年：2001
- 卷：13
- 期：6
- 页码：2042 - 2048
- 全文大小：798K
- 年卷期：v.13,no.6(June 2001)
- ISSN：1520-5002
文摘
A few new pure beryllophosphate molecular sieves have been hydrothermally synthesizedby using concentrated amines such as triethylene tetramine, polyethylene polyamine,piperazine, and pyridine as structure-directing agents. The structures of these compoundswere characterized by single-crystal X-ray diffraction. Their structures are similar to thezeolite gmelinite, gismondine, and ABW frameworks, named BePO4-GME, BePO4-GIS,and BePO4-ABW, respectively. BePO4-GME is the first instance of phosphate with GMEtopology. The organic template was found in the 12-membered ring channels running along[001]; the thermal analysis indicates that the inorganic framework collapses above 400 
Cafter the removal of the template. BePO4-GIS is a new beryllophosphate, which has three-dimensional, intersecting 8-membered ring channels along the crystallographic [001], [010],and [111] directions. In the concentrated amines system these resulting compounds havesimilar structural characterizations: Their frameworks that are built up from the connectionof BeO4 and PO4 tetrahedra all have a 4.8.8 network and can be viewed as built from adifferent number of cross-linked chains (threes for BePO4-GME and fours for BePO4-GISand BePO4-ABW). Crystal data for BePO4-GME1: trigonal, space group P1c, a =13.056(8), b = 13.056(8), c = 9.485(6) Å, V = 1400(2) Å3, Z = 12, R1 = 0.0513, Rw = 0.1519.Crystal data for BePO4-GIS: monoclinic, space group C2/c, a = 13.514(2), b = 9.0119(10),c = 9.6357(11) Å, 
= 134.507(2), V = 836.9(2) Å3, Z = 4, R1 = 0.0460, Rw = 0.1455. Crystaldata for BePO4-ABW: orthorhombic, space group Pna21, a = 8.7173(8), b = 8.5889(8), c =4.9673(5) Å, V = 371.91(6) Å3, Z = 4, R1 = 0.0304, Rw = 0.0805.
Cafter the removal of the template. BePO4-GIS is a new beryllophosphate, which has three-dimensional, intersecting 8-membered ring channels along the crystallographic [001], [010],and [111] directions. In the concentrated amines system these resulting compounds havesimilar structural characterizations: Their frameworks that are built up from the connectionof BeO4 and PO4 tetrahedra all have a 4.8.8 network and can be viewed as built from adifferent number of cross-linked chains (threes for BePO4-GME and fours for BePO4-GISand BePO4-ABW). Crystal data for BePO4-GME1: trigonal, space group P1c, a =13.056(8), b = 13.056(8), c = 9.485(6) Å, V = 1400(2) Å3, Z = 12, R1 = 0.0513, Rw = 0.1519.Crystal data for BePO4-GIS: monoclinic, space group C2/c, a = 13.514(2), b = 9.0119(10),c = 9.6357(11) Å, = 134.507(2), V = 836.9(2) Å3, Z = 4, R1 = 0.0460, Rw = 0.1455. Crystaldata for BePO4-ABW: orthorhombic, space group Pna21, a = 8.7173(8), b = 8.5889(8), c =4.9673(5) Å, V = 371.91(6) Å3, Z = 4, R1 = 0.0304, Rw = 0.0805.