Titanium-Molybdate Porous Material for High Tc-99m Elution
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Solution Overview
Problem
The limited production sites and high-flux nuclear reactors for Mo-99/Tc-99m generators lead to frequent supply interruptions and shortages, affecting the availability of technetium-99m (Tc-99m) for nuclear medicine procedures.
Innovation Solution
A process for producing titanium-molybdate (Ti-Mo) materials, involving reacting metal molybdenum with a first acid, combining with a titanium source, and pH adjusting to precipitate Ti-Mo particulates, which are then crystallized and milled to create a porous structure suitable for technetium-99m generators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If Mo-99 is produced in limited high-flux nuclear reactors, then Tc-99m can be generated for medical imaging, but supply interruptions and shortages occur frequently
Solution Approach 1:
The patent changes the chemical parameters by creating a titanium-molybdate composite material with specific stoichiometry (Ti:Mo molar ratio of 0.5:1 to 2:1) and porous structure characteristics. This modified material structure enables improved Tc-99m elution efficiency and reliability, addressing the supply continuity issue through enhanced material performance rather than increasing reactor capacity
Solution Approach 2:
The patent uses a composite titanium-molybdate material combining two different metal oxides (titanium oxide and molybdenum oxide) in a controlled ratio. This composite structure leverages the properties of both materials to create a generator with superior Tc-99m release characteristics, improving both quantity and reliability of Tc-99m supply
2Productivity
If Ti-Mo material is produced through multi-step chemical process, then porous structure with high eluting efficiency is achieved, but process complexity increases
Solution Approach 1:
The patent segments the chemical process into distinct operational steps: (1) reacting metal molybdenum with first acid to form Mo composition, (2) combining with titanium source to form Ti-Mo composition, (3) pH adjusting to precipitate Ti-Mo particulates, (4) drying and crystallizing, and (5) milling to create porous structure. This segmentation allows each step to be optimized independently while maintaining overall process manageability
Solution Approach 2:
The patent creates a porous titanium-molybdate material structure through controlled precipitation and drying processes. The porous morphology with specific pore size distribution (0.1-100 microns) provides high surface area and improved mass transfer, achieving high eluting efficiency (≥90% Tc-99m release) while the porosity itself becomes a functional feature rather than a complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The Ti-Mo material achieves high eluting efficiency, with at least 90% of technetium content release via aqueous liquid, addressing supply challenges and ensuring consistent availability of Tc-99m.
Implementation Method 1
pH adjusting the Ti-Mo composition with a base to precipitate a plurality of Ti-Mo particulates
Implementation Method 2
the isolated Ti-Mo particulates may be subjected to heat energy to at least partially dry and/or partially crystallize the Ti-Mo particulates as well as to crystallize a plurality of inorganic salts within a porous network
Data Source
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AI summary
A process for producing a titanium-molybdate material is provided. The process includes a step of reacting a metal molybdenum (Mo) material in a liquid medium with a first acid to provide a Mo composition and combining the Mo composition with a titanium source to provide a Ti-Mo composition. The Ti-Mo composition can be pH adjusted with a base to precipitate a plurality of Ti-Mo particulates.