DBX-1 Synthesis via Electrochemical Copper Reduction

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Solution Overview

Problem

The production of copper(I) 5-nitrotetrazolate (DBX-1) is hindered by unpredictable yields and safety concerns due to the use of organic reducing agents, which result in non-isolable, poorly crystallized materials, and existing methods fail to replace lead(II) azide and styphnate effectively in military and commercial blasting due to toxicity issues.

Innovation Solution

An electrochemical method involving an aqueous electrolyte with Cu2+, SO42−, and a Group 17 anion is used to reduce or oxidize copper species to form Cu+, which is then contacted with 5-nitrotetrazolate, avoiding organic reducing agents and resulting in a DBX-1 with reduced carbon content and improved crystallinity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If organic reducing agents are used to synthesize copper(I) 5-nitrotetrazolate, then the synthesis can proceed, but the yield becomes unpredictable and the product becomes non-isolable with poor crystallinity

Engineering Contradiction:

Improvesynthesis feasibilityVSAvoidproduct crystallinity and isolability

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent changes the chemical parameters of the synthesis system by replacing organic reducing agents with inorganic reducing agents (sodium borohydride, sodium metabisulfite, or zinc metal) in aqueous electrolyte solutions. This parameter change transforms the reaction environment to achieve predictable yields and well-crystallized isolable products, resolving the contradiction between synthesis feasibility and product quality

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent employs inexpensive, readily available inorganic reducing agents (sodium borohydride, sodium metabisulfite, zinc metal) that can be easily disposed of after use. These short-living reagents replace problematic organic reducing agents, enabling reliable synthesis while maintaining ease of manufacture and improving product isolability

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Power

If lead(II) azide or lead(II) styphnate is used as primary explosive, then explosive performance is achieved, but environmental and health hazards increase due to lead content

Engineering Contradiction:

Improveexplosive performanceVSAvoidtoxicity and environmental hazard

Core Design Contradiction:

PowerVSObject-affected harmful factors

Solution Approach 1:

The patent extracts and eliminates the harmful lead component from primary explosive compositions by replacing lead(II) azide and lead(II) styphnate with copper(I) 5-nitrotetrazolate. This substitution removes the toxic element while preserving the required explosive performance characteristics, resolving the contradiction between power and harmful factors

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent converts the potential harm of lead-based explosives into a beneficial outcome by developing copper-based alternatives that maintain explosive performance without toxicity. The copper(I) 5-nitrotetrazolate composition provides the same functional benefit (explosive power) while eliminating the harmful environmental and health effects

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

3Productivity

If existing production methods for copper(I) 5-nitrotetrazolate are used, then some production capability exists, but reliability and safety are compromised due to unpredictable yields

Engineering Contradiction:

Improveproduction capabilityVSAvoidyield predictability and safety

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent establishes a controlled electrochemical synthesis process where reducing agents are added in specific stoichiometric amounts to Cu2+ solutions, and reaction conditions (pH, temperature, concentration) are precisely controlled and monitored. This feedback-controlled approach ensures predictable yields and reliable product formation, resolving the contradiction between productivity and reliability

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent prepares Cu2+ electrolyte solutions with predetermined concentrations and compositions before initiating the reduction reaction. The reducing agents are pre-selected and pre-dosed based on stoichiometric calculations, ensuring that the reaction proceeds reliably with predictable yields. This preliminary preparation eliminates the unpredictability of existing methods while maintaining production capability

Inventive Principle:

Principle #10Preliminary action

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 method provides a reliable and safer synthesis of DBX-1 with low carbon content, reducing impurities and enabling stable, isolable copper(I) 5-nitrotetrazolate production, suitable for detonator applications.

Implementation Method 1

electrochemically reducing the Cu2+ to form a Cu+ species

Methodology Applied

Scientific EffectElectrochemical reduction: Electrolysis

Implementation Method 2

electrochemically oxidizing the Cu0 to form a Cu+ species

Methodology Applied

Scientific EffectElectrochemical oxidation: Electrolysis

Data Source

PatentUS11746425B2DBX-1, method of manufacture, and device including the DBX-1

Publication Date: 2023.09.05 ENSIGN BICKFORD AEROSPACE & DEFENSE CO

AI summary

A composition including copper(I) 5-nitrotetrazolate, wherein the composition has a carbon content of less than 7 weight percent, based on a total weight of the copper(I) 5-nitrotetrazolate.