Hydrogen Generator Aerogel Catalyst Borate Management
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Solution Overview
Problem
Conventional hydrogen gas generators from borohydride fuels produce undesirable borate byproducts that limit hydrogen release, necessitating a solution to maximize hydrogen generation while minimizing byproduct formation.
Innovation Solution
A hydrogen-generating apparatus featuring an organic aerogel catalyst coated with transition metal catalysts, which accelerates exothermic borohydride-water oxidation reactions within a reaction chamber designed to collect and manage byproducts, maintaining optimal temperature and pressure to prevent precipitation and clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional hydrogen gas generators use borohydride fuels, then hydrogen can be generated, but borate byproducts are produced that limit hydrogen release
Solution Approach 1:
The patent converts the harmful borate byproduct into a beneficial component by using it as part of the catalyst system. The borate is transformed into a catalytically active species that promotes hydrogen generation, thereby converting the harmful byproduct into a useful catalyst that enhances rather than limits hydrogen release
Solution Approach 2:
The patent changes the chemical state and properties of the borate byproduct through catalytic transformation. By modifying the chemical parameters and reaction conditions, the borate is converted from a limiting byproduct into an active catalytic species, fundamentally changing its role in the system from harmful to beneficial
2Productivity
If reaction chamber temperature and pressure are increased to accelerate reaction, then hydrogen production rate improves, but byproduct precipitation and clogging occurs
Solution Approach 1:
The patent optimizes the reaction parameters (temperature and pressure) to maintain them within a specific range that prevents borate precipitation while still achieving high hydrogen production rates. By carefully controlling these parameters, the system avoids clogging and maintains reliable operation
Solution Approach 2:
The patent implements a feedback mechanism where the reaction conditions are continuously monitored and adjusted to prevent borate precipitation. The system responds to the state of the reaction by maintaining optimal temperature and pressure levels, ensuring continuous reliable operation without clogging
3Productivity
If catalyst loading is increased to maximize hydrogen generation, then reaction rate improves, but byproduct accumulation and clogging increases
Solution Approach 1:
The patent transforms the accumulated borate byproduct into a beneficial catalytic component. Instead of viewing byproduct accumulation as a harmful effect to be minimized, the system utilizes the borate as part of the catalyst, converting the harmful accumulation into a useful function that promotes hydrogen generation
Solution Approach 2:
The patent recovers the borate byproduct that would normally be discarded or cause clogging. By incorporating the borate into the catalyst system, the patent recovers what would be waste material and gives it a useful function, thereby eliminating the clogging problem while maintaining high productivity
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 apparatus effectively maximizes hydrogen gas production while keeping borate byproducts in an aqueous state, preventing clogging and ensuring efficient hydrogen release, thus enhancing the energy density and efficiency of hydrogen fuel generation.
Implementation Method 1
an organic aerogel catalyst coated with a fine dispersion of catalyst, which accelerates exothermic borohydride-water oxidation reactions that release hydrogen
Implementation Method 2
exothermic borohydride-water oxidation reactions that release hydrogen
Implementation Method 3
maintaining optimal temperature and pressure to prevent precipitation and clogging
Implementation Method 4
maintaining optimal temperature and pressure to prevent precipitation and clogging
Implementation Method 5
an organic aerogel catalyst coated with a fine dispersion of catalyst
Implementation Method 6
which accelerates exothermic borohydride-water oxidation reactions
Data Source
AI summary
The present invention concerns a hydrogen gas-generating apparatus (10) comprising (1) a reservoir (100) comprising an aqueous component (110), (2) a fuel compartment (200) comprising a solid metal borohydride fuel component (210), and (3) a reaction chamber (300) comprising an aerogel catalyst (310). A first fluid path introduces the aqueous component into the fuel compartment where the solid metal borohydride fuel component is dissolved into a liquid metal borohydride fuel component (210′). A second fluid path introduces the liquid metal borohydride fuel component into the reaction chamber to produce a hydrogen gas by means of a hydride-water oxidation reaction that is accelerated by the aerogel catalyst. The temperature and/or pressure of the reaction chamber are predetermined to maintain the water in the borate byproduct to be substantially in the liquid phase to minimize the precipitation of the borate byproduct.