Biomass-Derived Alcohol Conversion to Alkenes via Metal Oxide Catalyst
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Solution Overview
Problem
Current processes for producing valuable chemicals like acrylic and methacrylic acids rely on fossil fuel-based feedstocks, leading to environmental concerns and inefficiencies, while alternative catalysts suffer from short catalytic lifetimes and low yields, making them unsuitable for commercial applications.
Innovation Solution
A catalytic system using a solid metal oxide catalyst with specific compositions, derived from renewable biomass, undergoes vapor phase oxidation to convert aliphatic alcohols into alkenes, aldehydes, and unsaturated carboxylic acids, offering a sustainable and efficient production method.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fossil fuel-based feedstocks are used to produce valuable chemicals, then production efficiency and yield are improved, but environmental harm and resource depletion increase
Solution Approach 1:
The invention changes the feedstock parameter from fossil fuel-based to biomass-derived aliphatic alcohols, transforming the source material while maintaining production efficiency. This parameter change enables sustainable production by using renewable resources that do not deplete finite fossil fuel reserves and reduce greenhouse gas emissions.
Solution Approach 2:
The invention converts biomass, which would otherwise decompose and release CO2, into valuable chemical products. By utilizing biomass-derived aliphatic alcohols as feedstock, the process transforms potential environmental harm from biomass decomposition into beneficial chemical production, creating a carbon-neutral or carbon-negative pathway.
2Reliability
If alternative catalysts are used to enable sustainable production, then environmental sustainability is improved, but catalytic lifetime and product yield deteriorate
Solution Approach 1:
The invention employs a composite catalyst system containing multiple metal oxides (Mo, V, Nb, Te, and other elements) in specific ratios. This composite structure combines the advantages of different metal oxides to achieve both high catalytic activity for sustainable biomass conversion and extended catalyst lifetime, resolving the contradiction between sustainability and durability.
Solution Approach 2:
The catalyst is designed with specific local compositions and structures optimized for different functions. By controlling the distribution and concentration of different metal oxide components within the catalyst matrix, the invention achieves regions with high activity for biomass conversion and regions that provide structural stability and long-term durability.
3Adaptability or versatility
If biomass-derived aliphatic alcohols are used as feedstock, then renewable resource utilization is improved, but conversion efficiency to valuable chemicals deteriorates
Solution Approach 1:
The invention optimizes multiple process parameters including temperature, pressure, space velocity, and catalyst composition to maximize conversion efficiency of biomass-derived aliphatic alcohols. By carefully controlling these parameters, the process achieves high yields of valuable chemicals while maintaining the advantage of using renewable feedstock.
Solution Approach 2:
The catalyst system is designed to be universally effective for converting different types of biomass-derived aliphatic alcohols (C3-C5) into corresponding valuable chemicals. This multi-functional catalyst can handle various feedstock options while maintaining high conversion efficiency, making the process adaptable to different renewable resource sources.
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
This approach enables the efficient conversion of biomass-derived alcohols into high-value chemicals like propylene, acrolein, and methacrylic acid, providing a sustainable alternative with improved catalytic performance and reduced environmental impact.
Implementation Method 1
subjecting an aliphatic alcohol to vapor phase process over a catalytic system of at least one catalyst zone
Implementation Method 2
in the presence of air or oxygen as the oxidant
Data Source
AI summary
Disclosed is a catalyst system, and its methods of preparation for producing, among others, alkenes and/or saturated or unsaturated oxygenates and, which include at least one of an aldehyde and an acid (such as propyl aldehyde, acrolein, acrylic acid, isobutyl aldehyde, methacrolein, methacrylic acid), comprising subjecting the corresponding C3 to C4 aliphatic alcohols that are derivable from biomass, such as, propanols, propanediols, and isobutanol, to a vapor phase process over the catalytic system described herein in the presence of a gas mixture of oxygen, air or nitrogen and/or other suitable diluting gas. In the case where a C3 aliphatic alcohol is subjected to a vapor phase catalytic process over the said catalytic system in the presence of air or oxygen, and a co-fed gas, such as nitrogen or other diluting gas, the product is at least one of propylene, propyl aldehyde, acrolein and acrylic acid. In the case where isobutanol is subjected to such a process, the product is at least one of isobutylene, isobutyl aldehyde, methacrolein and methacrylic acid. The catalyst system comprises a single catalytic zone or multi-catalytic zones, in each of which the composition of the co-feed and other reaction parameter can be independently controlled.