Fe-Ni-Co-Mo Alloy Catalyst for Lead-Free Hydrogenation
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Solution Overview
Problem
Existing powderous catalysts, such as Lindlar catalysts, face limitations in terms of carrier material stability, lead contamination, and solvent requirements, necessitating the development of a more efficient and environmentally friendly catalytic system for hydrogenation processes.
Innovation Solution
A powderous catalytic system utilizing a metal alloy carrier comprising iron, nickel, cobalt, and molybdenum, coated with a non-acidic metal oxide layer and impregnated with palladium, which is free from lead and easy to recycle, produce, and handle, allowing for solvent-free hydrogenation with high selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If Lindlar catalyst is used, then hydrogenation can be performed, but lead contamination occurs and carrier stability is poor
Solution Approach 1:
The invention extracts and removes the harmful lead component from the catalyst system entirely. By replacing the traditional lead-treated calcium carbonate carrier with a metal alloy carrier (Fe-Ni-Co-Mo) that does not require lead treatment, the harmful factor is eliminated while maintaining catalytic functionality through palladium deposition on the metal alloy surface.
Solution Approach 2:
The invention employs a composite material approach by creating a multi-component metal alloy carrier consisting of Fe, Ni, Co, and Mo elements. This composite structure provides enhanced stability and mechanical strength compared to traditional calcium carbonate carriers, while the alloy composition can be optimized for catalytic performance when coated with metal oxide and impregnated with Pd.
2Productivity
If traditional powderous catalysts are used, then hydrogenation reactions can proceed, but solvent requirements increase complexity
Solution Approach 1:
The metal alloy carrier exhibits inherent properties that enable the catalyst to function effectively without requiring additional solvent systems. The metal alloy surface provides adequate dispersion and anchoring for Pd nanoparticles, and the carrier structure itself facilitates reactant access and product release, making the system self-sufficient and eliminating the need for complex solvent management.
3Measurement precision
If catalysts are designed for high selectivity, then reaction specificity improves, but catalyst recovery and recycling become difficult
Solution Approach 1:
The metal alloy carrier is designed with a porous structure that provides high surface area for Pd nanoparticle deposition, enabling high catalytic selectivity through increased active sites. The porous architecture also facilitates easy penetration by reactants and efficient product release, while the particle morphology allows for straightforward filtration and recovery of the catalyst after reaction completion.
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 new catalytic system demonstrates high stability, reusability, and selectivity in hydrogenation reactions, with excellent performance in converting various compounds, as evidenced by high conversion and selectivity rates in examples provided.
Implementation Method 1
the said metal alloy is coated by a metal oxide layer and impregnated with Pd
Implementation Method 2
selective catalytic hydrogenation of a compound of formulae
Implementation Method 3
reactions of organic compounds with hydrogen in the presence of said catalyst
Implementation Method 4
impregnated with Pd
Data Source
AI summary
The present invention is related to a new metal powder catalytic system (catalyst) comprising a Fe-alloy as a carrier, its production and its use in hydrogenation processes.