Nickel-Copper-Sulfur Silica Catalyst for Selective Hydrogenation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current catalysts for hydrocarbon resin hydrogenation, such as palladium and nickel-based catalysts, face challenges in selective hydrogenation of aromatic compounds, with limitations in catalyst support and composition, leading to reduced efficiency and selectivity in producing high-quality, colorless, and odorless water-white resins.
Innovation Solution
A nickel-based powder catalyst with a high degree of nickel reduction (90% or more) is developed, comprising nickel, copper, and sulfur supported on silica, optimized for hydrogenation reactions to enhance selectivity towards olefin over aromatic unsaturated bonds, achieving a catalyst with improved activity and thermal stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a noble metal catalyst such as palladium is used for selective hydrogenation of olefin in aromatic unsaturated hydrocarbons, then hydrogenation activity and selectivity are improved, but catalyst cost increases and palladium loss occurs in liquid phase hydrogenation
Solution Approach 1:
The patent replaces expensive noble metal catalysts (palladium, platinum) with a cheaper nickel-based catalyst system. The nickel catalyst is used in a controlled manner with optimized preparation conditions to achieve high conversion efficiency, effectively substituting the expensive noble metals while maintaining catalytic performance for selective hydrogenation of olefinic unsaturated bonds.
Solution Approach 2:
The patent optimizes multiple parameters of the nickel catalyst including preparation temperature (60-100°C), pH conditions (pH 7-9), sulfur content (1-10 parts by weight), and nickel reduction degree (90% or more). These parameter optimizations enable the nickel catalyst to achieve high selectivity for olefin hydrogenation while preventing aromatic hydrogenation, effectively replacing noble metal catalysts.
2Loss of substance
If a Ni-based catalyst is used for hydrogenation reaction, then catalyst cost is reduced, but aromatic compounds are hydrogenated together with olefin, reducing selectivity
Solution Approach 1:
The patent introduces sulfur as a modifying agent that acts as an intermediary to control the selectivity of the nickel catalyst. The sulfur content (1-10 parts by weight) modifies the nickel catalyst surface to enhance selectivity for olefin hydrogenation while suppressing aromatic hydrogenation, enabling the cheap nickel catalyst to achieve noble metal-level selectivity.
Solution Approach 2:
The patent optimizes the sulfur content and nickel reduction degree (90% or more) to achieve high selectivity. By controlling these parameters, the nickel catalyst selectively hydrogenates olefinic unsaturated bonds while leaving aromatic compounds intact, resolving the selectivity issue that normally arises with nickel-based catalysts.
3Ease of manufacture
If existing catalyst preparation methods are used, then preparation process is simple, but catalyst composition and support are limited, reducing hydrogenation efficiency
Solution Approach 1:
The patent uses silica gel as a universal support material that can accommodate nickel, copper, and sulfur components. This universal support system enables the catalyst to achieve high nickel reduction (90% or more) while maintaining simplicity in preparation. The silica gel support provides a versatile platform that enhances catalytic performance without complicating the manufacturing process.
Solution Approach 2:
The patent creates a composite catalyst system comprising nickel, copper, and sulfur on a silica gel support. This composite structure synergistically enhances the catalytic properties, achieving high nickel reduction and improved hydrogenation efficiency. The composite material approach allows optimization of multiple functions (activity, selectivity, stability) while maintaining practical manufacturability.
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 effectively produces high-quality, colorless, and odorless hydrocarbon resins with an APHA value of 30 or less, demonstrating enhanced thermal stability and selectivity, while optimizing particle size, surface area, and pore structure for efficient hydrogenation.
Implementation Method 1
a nickel-based powder catalyst with a high degree of nickel reduction (90% or more) is developed, comprising nickel, copper, and sulfur supported on silica, optimized for hydrogenation reactions to enhance selectivity towards olefin over aromatic unsaturated bonds
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
Data Source
AI summary
The present invention relates to a catalyst for a hydrocarbon resin hydrogenation reaction and a preparation method for the same, wherein the catalyst is a nickel powder catalyst including nickel (Ni), copper (Cu), and sulfur (S), and more particularly, a nickel-based catalyst for a hydrogenation reaction, which is added to a hydrogenation reaction in order to improve the color of the hydrocarbon resin. According to an embodiment of the present invention, provided is a catalyst for a hydrogenation reaction, includes 40-80 parts by weight of nickel, 0.01-5 parts by weight of copper, 1-10 parts by weight of sulfur, and 10-60 parts by weight of a silica support based on 100 parts by weight of the entire dried catalyst including a support. Therefore, the catalyst can improve the quality of hydrocarbon resin. Furthermore, the catalyst can provide colorless, odorless, and transparent water-white hydrocarbon resin with improved thermal stability by removing unsaturated bonds in the hydrocarbon resin.