Selective Ring-Opening Catalyst for High Viscosity Index Lube Base Oils
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Solution Overview
Problem
Current methods for producing high viscosity index (VI) lube base oils face challenges in scalability and raw material limitations, particularly in achieving high paraffin content necessary for high-quality oils, which restricts market supply.
Innovation Solution
A catalyst for selective ring-opening (SRO) reactions comprising a solid acid material and a metal, with specific pore size distribution and composition, is used to enhance the VI of lube base oils by selectively converting naphthenic and aromatic compounds into branched paraffins, allowing for the production of high-quality Group III+ oils from a wider range of feeds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If structural isomerization reaction with high paraffin content feed is used to produce high VI lube base oils, then the VI of lube base oil is improved, but it is difficult to obtain oil with high paraffin content and supply large quantities to the market
Solution Approach 1:
The invention changes the chemical structure parameters of naphthenic compounds by using selective ring-opening reaction to convert them into branched paraffins, thereby altering the feed composition to achieve high VI without requiring pre-existing high paraffin content feed
Solution Approach 2:
The catalyst acts as an intermediary that facilitates the transformation of naphthenic compounds into branched paraffins, enabling the production of high VI lube base oils from feeds that would otherwise not have sufficient paraffin content
2Quantity of substance
If synthetic base oils (Group IV) are prepared from chemical raw materials to achieve high VI, then the VI and quality of lube base oil is improved, but the raw materials are expensive and the amount of raw materials available is small
Solution Approach 1:
The invention changes the chemical composition parameters of the feed by converting naphthenic compounds into branched paraffins through selective ring-opening reaction, enabling the production of high VI lube base oils from conventional oil feeds rather than expensive synthetic chemical raw materials
Solution Approach 2:
The invention uses conventional oil-based feeds that are abundant and inexpensive compared to synthetic chemical raw materials, transforming them through catalytic reaction to achieve high VI properties
3Manufacturing precision
If conventional catalysts are used for ring-opening reactions, then the reaction can proceed, but the selectivity for converting naphthenic compounds to branched paraffins is insufficient, limiting VI enhancement
Solution Approach 1:
The invention uses a composite catalyst comprising both a metal component (for hydrogenation activity) and a solid acid catalyst component (for ring-opening activity), where the combination of different material properties enables selective conversion of naphthenic compounds to branched paraffins with high VI enhancement
Solution Approach 2:
The catalyst is designed with specific pore size distribution (20% or more of total pore volume having pore size of 10 nm or more) to provide appropriate active sites and mass transfer characteristics for selective ring-opening reaction of naphthenic compounds
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 increases the VI of lube base oils by at least 5%, enabling the mass production of high-quality oils with improved thermal stability and reduced volatility, overcoming the limitations of existing methods.
Implementation Method 1
A catalyst for SRO reactions to achieve the first aspect of the present disclosure includes a solid acid material and a metal
Data Source
AI summary
The present disclosure provides a catalyst for SRO reactions. The catalyst includes a solid acid material and a metal. In this case, pores of the catalyst corresponding to at least 20% of the total pore volume of the catalyst have a pore size of 10 nm or more. The present disclosure also provides a method of using the catalyst.