Nickel Hydrogenation Catalyst with Copper Promoter
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Solution Overview
Problem
Existing hydrocarbon resin hydrogenation catalysts face challenges in maintaining high nickel content while ensuring small crystallite size and dispersibility, leading to reduced activity and filterability issues during high-speed rotation.
Innovation Solution
A catalyst comprising nickel, copper as a promoter, and a silica carrier, prepared using the deposition-precipitation method, with controlled particle size distribution and pore structure to achieve high reduction degrees at low temperatures and improved filterability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nickel content is increased to maintain high hydrogenation activity, then catalyst activity is improved, but dispersibility decreases and nickel crystal size increases
Solution Approach 1:
The patent applies preliminary action by adding copper promoter before nickel deposition during catalyst preparation. The copper is pre-loaded onto the support material, creating a modified surface that will control subsequent nickel crystal growth. This preliminary modification of the support surface prevents excessive nickel crystal aggregation even at high nickel loadings (40-80 wt%), resolving the contradiction between maintaining high activity and controlling crystal size.
Solution Approach 2:
The patent uses copper as an intermediary substance between the support and nickel active component. The copper acts as a mediator that influences nickel deposition and crystal growth behavior. By introducing this intermediary element, the system achieves better dispersibility and smaller crystal sizes at high nickel content, resolving the technical contradiction between activity and crystal size control.
2Productivity
If nickel content is increased to ensure high activity, then hydrogenation performance is improved, but filterability deteriorates due to poor dispersibility
Solution Approach 1:
The copper promoter is pre-introduced onto the support surface before nickel deposition. This preliminary action creates a modified surface that promotes uniform nickel distribution and prevents aggregation. The result is a catalyst with high nickel content that maintains good dispersibility and filterability, resolving the contradiction between productivity and ease of operation.
Solution Approach 2:
The patent changes the chemical composition parameters of the catalyst system by introducing copper promoter. This parameter change (adding Cu) fundamentally alters the nickel deposition and distribution behavior, enabling high nickel content while maintaining good dispersibility and filterability characteristics.
3Manufacturing precision
If copper promoter is added to improve dispersibility and reduce crystal size, then nickel distribution is improved, but catalyst preparation complexity increases
Solution Approach 1:
The copper promoter is added in advance during catalyst preparation, before nickel deposition. This preliminary action simplifies the overall process by pre-modifying the support surface to control subsequent nickel behavior. Rather than requiring complex post-processing to achieve good dispersibility, the copper pre-loading creates favorable conditions for uniform nickel distribution automatically.
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 achieves high hydrogenation activity with small nickel crystallites, enhanced dispersibility, and improved filterability, maintaining catalyst performance even during high-speed rotation, and achieving a high reduction degree of 80% or more.
Implementation Method 1
a catalyst having improved activity by including copper and copper oxide as a promoter when a hydrogenation catalyst including nickel is prepared
Implementation Method 2
as a hydrogenation catalyst including nickel is prepared by using a deposition-precipitation (DP) method
Data Source
AI summary
The present invention relates to a catalyst for hydrogenation and a method for preparing the same, and more specifically, provides a catalyst having improved activity by including copper and copper oxide as a promoter when a hydrogenation catalyst including nickel is prepared by using a deposition-precipitation (DP) method. Accordingly, a catalyst having high activity may be provided in a hydrogenation process of a hydrocarbon resin.