Hydrogenated Compound Production with Ammonia–Hydrogen Mixed Gas
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Solution Overview
Problem
Existing methods for producing hydrogenated compounds using hydrogen sources derived from fossil fuels face challenges in achieving sufficient selectivity and efficiency, particularly when using ammonia as an alternative hydrogen source.
Innovation Solution
A method involving the use of a mixed gas containing ammonia and hydrogen, with specific concentration ranges, to reduce compounds with double or triple bonds into hydrogenated compounds, utilizing ammonia derived from renewable energy and optionally including nitrogen, with suitable catalysts and reactors, to enhance selectivity and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ammonia is used as a hydrogen source instead of fossil fuel-derived hydrogen, then environmental sustainability is improved, but selectivity of the hydrogenated compound deteriorates
Solution Approach 1:
The patent optimizes the concentration of ammonia in the mixed gas within the range of 0.01-10% by volume to achieve both environmental sustainability and high selectivity. This parameter adjustment allows the use of ammonia as a green hydrogen source while maintaining sufficient selectivity for the desired hydrogenated compound
Solution Approach 2:
The patent employs a composite gas system consisting of ammonia and hydrogen in a mixed gas configuration. This composite approach combines the environmental benefits of ammonia with the reactivity of hydrogen, achieving both sustainability goals and acceptable selectivity for the hydrogenation reaction
2Productivity
If conventional hydrogenation methods are used, then production efficiency is maintained, but selectivity of the intended hydrogenated compound deteriorates
Solution Approach 1:
The patent implements specific parameter optimizations including ammonia concentration (0.01-10% by volume), temperature (50-400°C), and pressure (0-30 MPaG) ranges that simultaneously maintain high production efficiency and improve selectivity. These parameter adjustments enable the reaction to proceed efficiently while minimizing by-product formation
Solution Approach 2:
The patent introduces dynamic control of reaction conditions, allowing adjustment of temperature, pressure, and gas flow rates during the hydrogenation process. This dynamic approach enables optimization of both productivity and selectivity by adapting conditions to the specific reaction stage and substrate
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 significantly improves the selectivity and efficiency of producing hydrogenated compounds like aniline, reducing by-product formation and lowering production costs by utilizing ammonia from renewable sources.
Implementation Method 1
a production method for producing aniline as a hydrogenated compound by reducing nitrobenzene as a raw material compound having a double bond with hydrogen to hydrogenate nitrobenzene
Implementation Method 2
to reduce the compound having a double bond and/or a triple bond into a hydrogenated compound
Data Source
AI summary
A selectivity of a produced hydrogenated compound is further improved. Provided is a method for producing a hydrogenated compound, including a step of bringing a compound having a double bond and/or a triple bond into contact with a mixed gas containing an ammonia gas and a hydrogen gas to reduce the compound having a double bond and/or a triple bond into a hydrogenated compound.