Cobalt-Promoted Nickel Catalyst for Sulfur-Tolerant Resin Hydrogenation
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Solution Overview
Problem
Existing catalysts, such as nickel-iron-silica-alumina, exhibit low activity in the hydrogenation of hydrocarbon resins, particularly when the sulfur level exceeds 100 ppm, necessitating a catalyst and process that can maintain catalytic activity at higher sulfur levels while being cost-effective.
Innovation Solution
A cobalt-promoted nickel catalyst supported on silica and alumina, with a nickel content of 45-85 wt.%, silicon content of 13.75-45 wt.%, aluminum content of 1-15 wt.%, and cobalt content of 0.25-4 wt.%, and a pore volume of 2-60 nm, which enhances activity and sulfur tolerance with a low cobalt promoter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If nickel-iron-silica-alumina catalysts are used for hydrogenation of hydrocarbon resins, then the catalyst structure is simple and cost-effective, but the catalytic activity is low especially when sulfur level exceeds 100 ppm
Solution Approach 1:
The patent changes the chemical composition parameters of the catalyst by introducing cobalt as a promoter element with specific content range (0.01-5 wt%), which fundamentally alters the catalytic properties and enables high activity in sulfur-containing environments
Solution Approach 2:
The patent creates a composite catalyst material combining nickel (40-80 wt%), silica (10-40 wt%), alumina (5-20 wt%), and cobalt (0.01-5 wt%), where the synergistic interaction between components provides both high catalytic activity and sulfur tolerance
2Reliability
If cobalt content in the catalyst is increased to improve activity and sulfur tolerance, then catalytic performance improves, but catalyst cost increases
Solution Approach 1:
The patent applies partial action by using low concentrations of cobalt (0.01-5 wt%) rather than high concentrations, which is sufficient to achieve the desired promotional effect on nickel catalyst activity and sulfur tolerance while minimizing cost
Solution Approach 2:
The patent optimizes the cobalt content parameter within a specific range (0.01-5 wt%) to achieve the最佳 balance between catalytic performance and cost, avoiding both deficiency and excessive usage
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 cobalt-promoted catalyst demonstrates significantly increased activity, with a 40% boost at 0.3 wt.% cobalt, and up to 300% improvement compared to non-promoted analogues, offering enhanced sulfur tolerance and economic cost savings.
Implementation Method 1
contacting said hydrocarbon resin feed with hydrogen in the presence of a catalyst, wherein said catalyst is a cobalt promoted supported nickel on silica and alumina catalyst
Implementation Method 2
which catalyst has a pore volume between 2 and 60 nm of at least 0.35 ml/g
Data Source
Figure 1
AI summary
The invention is in the field of catalysis. More specifically, the invention pertains to catalytic hydrogenation processes and catalysts used therein. According to the invention there is provided a process for the hydrogenation of hydrocarbon resins, in particular hydrocarbon resin feeds with a relatively high sulfur content using a cobalt promoted nickel on silica/alumina catalyst, the catalyst per se, and the process of preparing said catalyst.