Composite Inorganic Oxide Catalyst for Bio-Oil Upgrading
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Solution Overview
Problem
Current methods for producing aviation biofuel from biomass pyrolysis oil require multiple catalytic steps, leading to reduced yield and reactor clogging issues due to the wide molecular weight distribution and functional groups in bio-oil, limiting commercial application.
Innovation Solution
A composite inorganic oxide catalyst comprising lanthanum (La), nickel (Ni), titanium (Ti), and cerium (Ce) is used in a two-step reaction process, where a metal catalyst supported on carbon is used for the first step and the composite oxide catalyst for the second step, to break C-C and C-O bonds and remove oxygen atoms, preventing reactor clogging and enhancing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple catalytic reaction steps (hydrogenation and hydrodeoxygenation) are used to process bio-oil, then the upgrading of bio-oil is achieved, but the production yield of aviation fuel is lowered
Solution Approach 1:
The patent combines multiple catalytic functions (hydrogenation and hydrodeoxygenation) into a single multifunctional catalyst system. The catalyst comprises metal nanoparticles (such as Pt, Pd, or Ni) supported on a bifunctional support material that provides both acid sites for C-C bond cleavage and metal sites for hydrogenation and hydrodeoxygenation reactions, thereby achieving comprehensive bio-oil upgrading in one step while maintaining high fuel yield
Solution Approach 2:
The patent employs composite catalyst materials combining metal nanoparticles with functionalized support materials (such as zeolites, activated carbon, or metal oxides). This composite structure enables the catalyst to perform multiple reactions simultaneously - the metal component facilitates hydrogenation and hydrodeoxygenation while the support provides acid catalysis for bond cleavage, achieving high-yield aviation fuel production with complete upgrading
2Manufacturing precision
If multiple catalytic reaction steps are used for bio-oil upgrading, then the upgrading is achieved, but reactor clogging occurs during continuous process
Solution Approach 1:
The patent merges multiple catalytic functions into a single reactor system with a multifunctional catalyst, eliminating the need for sequential reaction steps. The unified catalyst performs hydrogenation, hydrodeoxygenation, and C-C bond cleavage simultaneously, preventing intermediate accumulation and reactor clogging while ensuring complete bio-oil upgrading and stable continuous operation
Solution Approach 2:
The patent optimizes reaction parameters (temperature, pressure, hydrogen flow rate, and catalyst composition) to achieve optimal performance of the multifunctional catalyst. By carefully controlling these parameters, the system maintains high conversion efficiency while preventing side reactions that could lead to coke formation and reactor clogging, ensuring reliable continuous operation
3Productivity
If C-C and C-O bonds are broken to remove oxygen atoms, then aviation fuel production is enabled, but polymerization and coke deposition occur
Solution Approach 1:
The patent designs the catalyst with spatially differentiated active sites - metal nanoparticles dispersed on a porous support material with controlled pore size and acid site distribution. This local quality differentiation allows selective C-C bond cleavage at acid sites while metal sites perform controlled hydrogenation, preventing excessive polymerization and coke deposition while enabling efficient oxygen removal for aviation fuel production
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 increases the efficiency of the upgrading reaction of biomass pyrolysis oil, allowing for continuous operation without reactor clogging and improving the production yield of aviation fuel by effectively suppressing polymerization and coke deposition.
Implementation Method 1
a composite inorganic oxide catalyst comprising lanthanum (La), nickel (Ni), titanium (Ti), and cerium (Ce) is used in a two-step reaction process, where a metal catalyst supported on carbon is used for the first step and the composite oxide catalyst for the second step, to break C-C and C-O bonds and remove oxygen atoms
Implementation Method 2
it is essential to develop a catalyst that removes oxygen atoms in the product while reducing the carbon chain length by breaking the C—C or C—O bond of the polymer compound
Implementation Method 3
The catalyst increases the efficiency of the upgrading reaction of biomass pyrolysis oil, allowing for continuous operation without reactor clogging and improving the production yield of aviation fuel by effectively suppressing polymerization and coke deposition
Data Source
AI summary
Disclosed herein is a catalyst for an upgrading reaction of biomass pyrolysis oil, a method for preparing the same, and a method for upgrading biomass pyrolysis oil using the same. The catalyst is a composite inorganic oxide, and the composite inorganic oxide includes lanthanum, nickel, titanium, and cerium. When a metal catalyst supported on carbon is used as a catalyst for a first step reaction, by using the catalyst as a catalyst for a second step reaction, the efficiency of the upgrading reaction of bio-oil is increased and a continuous reaction is possible without clogging of a continuous reactor.