Nickel Catalyst Silica Support Hydrogenation Activity
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Solution Overview
Problem
Existing nickel-based catalysts for hydrocarbon resin hydrogenation face challenges in maintaining high activity while supporting a high content of nickel, which often results in reduced dispersibility and increased particle size, leading to decreased filterability and catalyst efficiency.
Innovation Solution
A nickel catalyst for hydrogenation reactions is developed, comprising 0.1-3 parts by weight of sulfur or sulfur oxide as a promoter and 10-50 parts by weight of silica as a support, based on 40-80 parts by weight of nickel or nickel oxide. This catalyst is manufactured using a deposition-precipitation method to achieve a uniform particle size distribution and small crystallite size of nickel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nickel content is increased to maintain high catalyst activity, then hydrogenation activity is improved, but dispersibility decreases and particle size increases
Solution Approach 1:
The patent applies local quality by creating a core-shell structure where nickel particles are dispersed on a silica carrier. The silica carrier provides a stable framework that locally supports nickel particles, preventing aggregation while maintaining high nickel content for activity. This spatial arrangement allows high activity without sacrificing dispersibility.
Solution Approach 2:
The patent uses composite materials by combining nickel (active ingredient) with silica carrier (support). This composite structure allows the nickel to provide hydrogenation activity while the silica carrier maintains dispersibility and prevents particle aggregation. The synergistic combination resolves the contradiction between activity and dispersibility.
2Productivity
If nickel content is increased to maintain high catalyst activity, then hydrogenation activity is improved, but filterability decreases due to increased particle size
Solution Approach 1:
The core-shell structure with silica carrier provides local support that keeps nickel particles small and dispersed. This local arrangement prevents the formation of large aggregates that would clog filters, thereby maintaining filterability while preserving high activity through adequate nickel distribution.
Solution Approach 2:
The silica carrier possesses a porous structure that accommodates nickel particles while maintaining overall particle size control. The pores allow for efficient diffusion and reaction while the macrostructure ensures good filterability. This porous architecture resolves the contradiction between activity and ease of filtration.
3Productivity
If conventional nickel catalysts are used with high nickel content, then activity is improved, but catalyst life decreases due to reduced dispersibility
Solution Approach 1:
The nickel-silica composite structure provides long-term stability because the silica carrier acts as a permanent support that prevents nickel particle aggregation and sintering. This composite architecture maintains dispersibility and activity over extended periods, thereby extending catalyst life while preserving high activity.
Solution Approach 2:
Instead of trying to maintain high nickel content without aggregation through conventional means, the patent inverts the approach by using a silica carrier framework that actively prevents aggregation. This inverted strategy allows high nickel content to be achieved while maintaining dispersibility and extending catalyst life.
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 improved activity, dispersibility, and filterability, maintaining a uniform particle size distribution and suppressing the generation of particles smaller than 1 μm, which enhances the stability and efficiency of the hydrogenation reaction.
Implementation Method 1
a catalyst for a hydrogenation reaction, which includes 0.1 to 3 parts by weight of at least one promoter selected from sulfur and sulfur oxide and 10 to 50 parts by weight of a silica carrier as a support, based on 40 to 80 parts by weight of at least one active ingredient selected from nickel and nickel oxide
Implementation Method 2
if a hydrogenation process of adding hydrogen is performed, unsaturated bonds are removed so that the color becomes brighter and the odor peculiar to hydrocarbon resins decreases
Implementation Method 3
This catalyst is manufactured using a deposition-precipitation method to achieve a uniform particle size distribution and small crystallite size of nickel
Data Source
AI summary
The present invention relates to a nickel catalyst for a hydrogenation reaction and a manufacturing method therefor, and relates to a nickel catalyst added in a hydrogenation reaction for improving a color of a hydrocarbon resin. The catalyst according to the present invention has a small crystallite size and improves dispersibility, while having high nickel content, and thus can provide high activity in hydrogenation reactions.