초록 ▼

Shaped, preferably porous, inorganic bodies are provided which are prepared from a reactive blend. In accordance with one preferred embodiment, the solution is absorbed into a porous sacrificial substrate such as a cellulose sponge. The solution-saturated substrate is heated and an oxidation-reducti

Shaped, preferably porous, inorganic bodies are provided which are prepared from a reactive blend. In accordance with one preferred embodiment, the solution is absorbed into a porous sacrificial substrate such as a cellulose sponge. The solution-saturated substrate is heated and an oxidation-reduction reaction occurs thereby forming an inorganic solid. A shaped, inorganic body is formed in situ. Optional, but preferred additional thermal treatment of the shaped, inorganic body removes the organic substrate, leaving an inorganic body that faithfully mimics the porosity, shape, and other physical characteristics of the organic substrate. Inorganic substrates may also be used to good effect. Large varieties of shaped bodies can be prepared in accordance with other embodiments of the invention and such shapes find wide use in surgery, laboratory and industrial processes and otherwise. The invention also provides chemically and morphologically uniform powders, including those having uniformly small sizes.

대표청구항 ▼

1. A method for preparing an inorganic material comprising:a. imbibing onto the surface of an organic substrate a reactive blend comprising: at least one metal cation; at least one oxidizing agent; and at least one precursor anion oxidizable by said oxidizing agent to form an oxoanion; b. conducting

1. A method for preparing an inorganic material comprising:a. imbibing onto the surface of an organic substrate a reactive blend comprising: at least one metal cation; at least one oxidizing agent; and at least one precursor anion oxidizable by said oxidizing agent to form an oxoanion; b. conducting an initial heating step to react said reactive blend while imbibed in the organic substrate under conditions of temperature and pressure effective to initiate an oxidation-reduction reaction between said oxidizing agent and the precursor anion; c. said reaction evolving at least one gaseous product, giving rise to said oxoanion and forming the inorganic material; and d. performing a subsequent heating step of said inorganic shaped body to remove any residue of said organic substrate.