WO3/MCM-48 Catalyst for 1-Butene Isomerization
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Solution Overview
Problem
Conventional isomerization catalysts for producing 1-butene from 2-butene-containing feedstocks are inefficient, resulting in low conversion rates and yields, especially when operating at elevated temperatures, which cannot meet the growing demand for 1-butene.
Innovation Solution
A method involving a MCM-48 catalyst with WO3 incorporated into its silica framework, used at reactor temperatures between 150° C. and 350° C. to enhance the isomerization of 2-butene to 1-butene, promoting increased catalytic activity and yield while avoiding metathesis reactions that convert 1-butene to propene.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional isomerization catalysts are used to produce 1-butene from 2-butene, then the process can operate at elevated temperatures, but the conversion rate and yield of 1-butene are low
Solution Approach 1:
The patent changes the operating temperature parameter from conventional elevated temperatures to a specific range of 150-350°C, which optimizes the catalytic activity for 2-butene conversion to 1-butene while maintaining high yield and conversion rate
Solution Approach 2:
The patent uses a composite catalyst system consisting of MCM-48 zeolite combined with WO3 (tungsten oxide) deposited on the zeolite surface. This composite material synergistically combines the acidic sites of MCM-48 with the catalytic properties of WO3 to achieve high conversion and yield at lower temperatures
2Productivity
If conventional isomerization catalysts are used, then the process is simple, but the catalytic activity at temperatures below 350°C is insufficient
Solution Approach 1:
The patent modifies the temperature parameter by operating in the 150-350°C range rather than conventional higher temperatures, while the WO3/MCM-48 catalyst system maintains high catalytic activity at these lower temperatures, thus resolving the contradiction between temperature and activity
3Speed
If higher temperatures are used for isomerization, then the reaction rate increases, but metathesis reactions occur that convert 1-butene to propene
Solution Approach 1:
The patent controls the temperature parameter within 150-350°C, which is sufficient to achieve high reaction rates for isomerization while being low enough to prevent metathesis reactions that would convert 1-butene to propene, thus resolving the contradiction between reaction rate and harmful side reactions
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 use of WO3/MCM-48 catalyst at reduced temperatures significantly increases the conversion of 2-butene to 1-butene, achieving higher yields and maintaining thermal stability, thus addressing the inefficiencies of conventional catalysts and meeting the demand for 1-butene production.
Implementation Method 1
contacting the hydrocarbon feed with the isomerization catalyst in the reactor at a temperature from 150° C. to 350° C. to produce an isomerization reaction effluent comprising 1-butene
Data Source
AI summary
Methods of producing 1-butene from a 2-butene-containing feedstock include feeding a hydrocarbon feed comprising 2-butene to a reactor, the reactor containing an isomerization catalyst and contacting the hydrocarbon feed with the isomerization catalyst in the reactor at a temperature from 150° C. to 350° C. to produce an isomerization reaction effluent comprising 1-butene. Further, the isomerization catalyst comprises a MCM-48 catalyst with WO3 incorporated into a silica framework of the MCM-48 catalyst.