Author
Robert H. Blessing
Bio: Robert H. Blessing is an academic researcher from Ohio University. The author has contributed to research in topics: Crystal structure & Ion exchange. The author has an hindex of 3, co-authored 3 publications receiving 320 citations.
Papers
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TL;DR: In this article, the preparation of two new crystalline zirconium phosphates, Zr(HPO4)2 and Zr[H20]2 · 2H2O, is reported.
228 citations
TL;DR: In this article, the crystal structure of zirconium molybdate was determined from integrated precession photographs using MoKα radiation, and a three-dimensional network of cross-linked chains built-up of quite regular [ZrO 3 eq (OH 2 eq O 2 ax ]-pentagonal bipyramids and distorted cis -MoO 4 (OH)(H 2 O-octahedra).
85 citations
17 citations
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TL;DR: Die Ubersicht schliesst die Herstellung, Eigenschaften, Anwendbarkeit and Theorie of diesen Substanzen ein.
354 citations
347 citations
TL;DR: In this paper, an update of the author's 1996 review is presented, largely drawn from the work of his research group, which is summarized in this update of this review [Curr Opin Solid State Mater Sci 1 (1996) 268].
Abstract: Phosphonic acids are more acidic than carboxylic acids. They are non-planar and possess twice the number of protons. These attributes lead to strong hydrogen bond formation that can be utilized in design of crystal-engineered structures and self-assembled supramolecular arrays. Their superior cation complexing ability leads to formation of a vast number of metal complexes and their use in lanthanide and actinide separations. Recent work, largely drawn from the work of the author’s research group, is summarized in this update of the author’s 1996 review [Curr Opin Solid State Mater Sci 1 (1996) 268].
259 citations
TL;DR: In this article, the properties of both amorphous and crystalline salts of tetravalent metals are reviewed, with special emphasis on the much studied salt of zirconium phosphate.
Abstract: Properties of both amorphous and crystalline salts of tetravalent metals are reviewed, with special emphasis on the much studied salt of zirconium phosphate. The discussion includes: (1) method of preparation, (2) interlayered crystal structure, (3) effect of counter ions on interlayer distance and steric hindrance, (4) mechanism of ion exchange, and (5) the interaction of polar molecules. Other insoluble acid salts with a layered structure include the phosphates of titanium, hafnium, germanium, tin, lead, and the arsenates of titanium, zirconium, and tin. Fibrous precipitates of the insoluble acid salts of cesium and thorium phosphate are mentioned briefly. Under appropriate experimental conditions, insoluble acid of unknown structure can be obtained. Investigations of their crystalline structure may be highly desirable. The ion exchange capacities of many of these substances are evaluated. 80 references, 3 tables, 4 figures.
243 citations