Polymer-Supported Hydrogenation Catalyst to Suppress Coke Formation
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Solution Overview
Problem
Existing catalysts for hydrogenation reactions, such as nickel sulfate, tungsten/nickel sulfate, and Pd/Ag-based catalysts on alumina or silica, suffer from low catalytic activity and unsatisfactory selectivity, leading to increased costs and coke formation due to rapid deactivation.
Innovation Solution
A catalyst comprising a polymer support with a specific repeating unit represented by Formula 1, supporting a catalytic component like Pt, Pd, or Ru, which enhances selectivity and stability by strong bonding between the polymer support and active metal, suppressing unwanted hydrogenation reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional catalysts (nickel sulfate, tungsten/nickel sulfate, Pd/Ag-based catalysts on alumina or silica) are used for hydrogenation reactions, then the catalyst can catalyze the reaction, but the catalytic activity is low and selectivity is unsatisfactory, leading to rapid deactivation and coke formation
Solution Approach 1:
The patent changes the fundamental parameter of the support material from inorganic (alumina, silica) to organic (polymer) and modifies the metal particle size to 1-100 nm, which fundamentally alters the catalyst's performance characteristics and resolves the contradiction between activity and stability
Solution Approach 2:
The patent creates a composite catalyst system combining polymer support with fine metal particles (Pt, Pd, Ru, Ni, Co), achieving synergistic effects where the polymer support provides stability and the metal particles provide catalytic activity, resolving the contradiction between reliability and productivity
2Reliability
If conventional catalysts are used for selective hydrogenation of unsaturated hydrocarbons, then the reaction can proceed, but selectivity is poor leading to unwanted hydrogenation reactions and coke formation
Solution Approach 1:
The patent applies local quality by creating highly dispersed metal particles (1-100 nm) on the polymer support, where each particle site has optimized local properties for selective catalysis, preventing coke formation while maintaining high selectivity for desired hydrogenation reactions
Solution Approach 2:
The patent changes the support material parameter from inorganic to polymer and controls metal particle size parameter to 1-100 nm, which fundamentally improves selectivity and prevents coke formation by altering the local chemical environment at the catalyst sites
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 catalyst exhibits high selectivity for alkene in alkyne hydrogenation, maintaining reactivity while suppressing unwanted reactions, thus improving reaction efficiency and reducing catalyst deactivation.
Implementation Method 1
the reaction occurs on the surface of the metal due to a strong bond between a polymer support comprising the repeating unit represented by Formula 1 and a hydrogen active metal cluster
Implementation Method 2
a catalyst for a hydrogenation reaction... the catalyst exhibits high selectivity for alkene in alkyne hydrogenation
Data Source
AI summary
A method for manufacturing a catalyst for a hydrogenation reaction, the method including: preparing a polymer support including a repeating unit of Formula 1, and supporting a catalytic component on the polymer support:wherein in Formula 1, means a point where the repeating units are linked, L1, L2 and L3 are O, R1 and R2 are the same as or different from each other, and are each independently hydrogen, an alkyl group having 1 to 10 carbon atoms, or an aryl group having 6 to 20 carbon atoms, m is 0 or 1, and p and q are each independently an integer from 0 to 4.