Gas separation: processes – Solid sorption – Organic gas or liquid particle sorbed
Reexamination Certificate
2006-05-10
2011-10-11
Hill, Jr., Robert J. (Department: 1776)
Gas separation: processes
Solid sorption
Organic gas or liquid particle sorbed
C095S116000, C095S133000, C095S134000, C096S090000, C117S106000, C428S220000, C544S225000, C544S226000
Reexamination Certificate
active
08034165
ABSTRACT:
A large single crystal of a complex such as an organic carboxylic acid metal complex, which crystal is useful as an adsorbent of various gases and vapors of organic solvents and as a hydrogen-absorbing material, as well as a process for producing the crystal, is disclosed. Two layers wherein an upper layer thereof is constituted by a solution containing a metal salt and an organic carboxylic acid having a conjugated system, or a solution containing a metal salt of the organic carboxylic acid having a conjugated system, and wherein a lower layer of the two layers is constituted by a solvent which is not miscible with the solvent of the solution, is formed. Vapor of pyrazine or a substituted pyrazine from a solution of pyrazine or the substituted pyrazine is introduced into the upper layer to allow reaction, thereby forming a large single crystal(s) of the organic carboxylic acid metal complex at the interface between the two layers, which crystal(s) has(have) a longer side with a size of not less than 0.8 mm.
REFERENCES:
patent: 2000063393 (2000-02-01), None
patent: 2000-109485 (2000-04-01), None
patent: 2000-309592 (2000-11-01), None
patent: 2004-196594 (2004-07-01), None
patent: 2005-232109 (2005-09-01), None
patent: 2005-255651 (2005-09-01), None
Translation of JP 2000-063393 A, Feb. 2000, Japan, Seki et al.
Mori Wasuke, Synthesis and Gas Occlusion of Rhodium(II) Benzoate Bridged by Pyrazine Derivatives; Mo. Cryst. Liq. Cryst., 2000, vol. 342, pp. 193-198.
STIC search results dated May 7, 2010.
Birch & Stewart Kolasch & Birch, LLP
Hill Jr. Robert J.
Jones Christopher
Yokohama City University
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