Supported Palladium Catalyst Preparation for Stable Carrier Loading
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Solution Overview
Problem
The challenge of achieving stable support of palladium on various carriers in supported palladium catalysts has arisen due to the varying compatibility of palladium with different carriers, complicating its application in diverse industrial processes.
Innovation Solution
A method involving the oxidation of a palladium compound through heating, followed by dissolution in a solvent and contact with a carrier, using tris(dibenzylideneacetone)dipalladium and/or tetrakis(triphenylphosphine)palladium, to ensure stable support on carriers like glass fibers or particulate materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If palladium is directly supported on a carrier without oxidation step, then the production process is simpler, but palladium cannot be sufficiently supported on the carrier
Solution Approach 1:
The patent applies preliminary action by performing oxidation of the palladium compound before the support step. The palladium compound is oxidized to a palladium(II) compound in advance, which then reacts with the carrier to form stable palladium-supported material. This preliminary oxidation step ensures reliable palladium support while maintaining process feasibility.
2Adaptability or versatility
If different carriers are used for diverse applications, then the applicability is improved, but it becomes difficult to cause palladium to be sufficiently supported on the carrier
Solution Approach 1:
The patent applies parameter changes by modifying the chemical state of palladium through oxidation before support. By converting the palladium compound to a palladium(II) compound through oxidation, the reactivity and support characteristics are adjusted, enabling sufficient palladium support on diverse carriers including glass fiber, silica, and other materials suitable for different applications.
3Reliability
If palladium compound is oxidized by heating before dissolution, then palladium support stability is improved, but the production process becomes more complex
Solution Approach 1:
The patent applies phase transitions by utilizing thermal oxidation to convert the palladium compound from a reduced state to an oxidized palladium(II) state through heating. This phase change in chemical state enables subsequent stable support on carriers. The oxidation step is integrated into the dissolution process, where the oxidized palladium compound is then dissolved in solvent and applied to the carrier.
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
This method enhances the reproducibility and applicability of palladium catalysts, enabling excellent reduction properties and selective reduction of specific functional groups, suitable for flow synthesis and organic synthesis applications.
Implementation Method 1
oxidizing a palladium compound by heating
Implementation Method 2
oxidizing a palladium compound by heating
Implementation Method 3
dissolving the palladium compound after the heating in a solvent to prepare a palladium compound solution
Implementation Method 4
bringing the palladium compound solution into contact with a carrier
Data Source
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AI summary
Provided are a method of producing a supported palladium catalyst that can cause palladium to be stably supported on a carrier, and a supported palladium catalyst. The method of producing a supported palladium catalyst according to an embodiment of the present disclosure includes the steps of: oxidizing a palladium compound by heating; dissolving the palladium compound after the heating in a solvent to prepare a palladium compound solution; and bringing the palladium compound solution into contact with a carrier.