Preparation and properties of desulfurization gypsum-slag hydraulic cementitious materials

AbstractDesulfurization gypsum is the desulphurization products of wet FGD process in coal-fired power plants. However, it has not been widely used by far. In order to expand the application scope of desulphurization gypsum, desulphurization gypsum-industrial waste composite cementing material, a new type of hydraulic cementing material prepared by a lot of desulphurization gypsum, granulated blast furnace slag and some activator is studied in this paper. Its performance is also studied

catena-Poly[[[aqua­(5-carb­oxy­pyridine-3-carboxyl­ato-κN)copper(I)]-μ-4,4′-bipyridine-κ2 N:N′] monohydrate]

In the title compound, {[Cu(C7H4NO4)(C10H8N2)(H2O)]·H2O}n, the CuI ion is coordinated by the N atom from a 5-carb­oxy­pyridine-3-carboxyl­ate anion, two N atoms from two 4,4′-bipyridine (4,4′-bipy) ligands and one water mol­ecule in a distorted tetra­hedral geometry. The 4,4′-bipy ligands bridge the CuI ions into polymeric chains propagating in [201]. The latticeand the coordinating water mol­ecules as well as the carboxy OH function are involved in the formation of inter­molecular O—H⋯O hydrogen bonds, which consolidate the crystal packing