Bimetallic Catalyst Selectivity for 3,4-Dihydroxytetrahydrofuran Reduction

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Solution Overview

Problem

Current methods for producing 1,4-butanediol and tetrahydrofuran rely on non-renewable chemical fuel resources, leading to environmental issues like global warming and fossil fuel depletion, and lack selectivity when using biomass-derived raw materials.

Innovation Solution

A catalyst system comprising metal catalysts with rhenium and gold supported on cerium oxide or activated carbon is used to react 3,4-dihydroxytetrahydrofuran with hydrogen, enhancing the selectivity of producing 1,4-butanediol or tetrahydrofuran from biomass-derived materials.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If conventional catalysts are used for reducing 3,4-dihydroxytetrahydrofuran, then the reaction can proceed, but the selectivity for producing 1,4-butanediol or tetrahydrofuran is insufficient

Engineering Contradiction:
ImproveselectivityVSAvoidproduction efficiency
Core Design Contradiction:
Manufacturing precisionVSProductivity

Solution Approach 1:

The patent employs composite catalyst systems combining multiple metal species (rhenium, gold, and other transition metals) supported on ceramic carriers. This composite structure enables simultaneous optimization of selectivity for desired products (1,4-butanediol or tetrahydrofuran) and productivity, resolving the technical contradiction by integrating multiple functional components that work synergistically in the reduction reaction of 3,4-dihydroxytetrahydrofuran

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If biomass-derived raw materials are used instead of chemical fuel resources, then environmental sustainability is improved, but the selectivity of product production is reduced

Engineering Contradiction:
Improveenvironmental impactVSAvoidselectivity
Core Design Contradiction:
Object-affected harmful factorsVSManufacturing precision

Solution Approach 1:

The patent optimizes reaction parameters including temperature, pressure, and catalyst composition to achieve high selectivity when using biomass-derived 3,4-dihydroxytetrahydrofuran as raw material. By carefully controlling these parameters, the invention resolves the contradiction between using environmentally friendly biomass resources and maintaining high product selectivity

Inventive Principle:
Principle #35Parameter changes

3Device complexity

If conventional reduction methods are used, then the process is simple, but the selectivity for desired products is low leading to resource waste

Engineering Contradiction:
Improveprocess complexityVSAvoidraw material utilization
Core Design Contradiction:
Device complexityVSLoss of substance

Solution Approach 1:

The patent introduces specially designed catalysts as intermediaries that facilitate the reduction reaction of 3,4-dihydroxytetrahydrofuran with high selectivity. These catalysts act as mediators between the raw material and desired products, enabling efficient conversion with minimal waste while maintaining reasonable process complexity

Inventive Principle:
Principle #24Intermediary (Mediator)

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 significantly increases the selectivity of 1,4-butanediol or tetrahydrofuran production, reducing environmental impact by utilizing biomass-derived raw materials and minimizing resource consumption.

Implementation Method 1

a catalyst containing M1 and M2 below as metal species and supported on a carrier... a catalyst containing M1 below as a metal species and supported on a carrier... used in a reaction for reducing 3,4-dihydroxytetrahydrofuran by reaction with hydrogen

Methodology Applied
Scientific EffectCatalysis: Catalysis

Data Source

PatentUS11040334B2Catalyst for reduction reaction of 3,4-dihydroxytetrahydrofuran, and method for producing 3,4-dihydroxytetrahydrofuran reduced product
Publication Date: 2021.06.22 DAICEL CORP
  • US11040334B2 patent drawing
  • US11040334B2 patent drawing

AI summary

Provided is a catalyst for reduction reaction with which 1,4-butanediol or tetrahydrofuran can be obtained with higher selectivity than with the related art, using a raw material derived from biomass. The catalyst is used in a reduction reaction of 3,4-dihydroxytetrahydrofuran with hydrogen, wherein the catalyst contains metal catalysts (1) and (2) below; metal catalyst (1): a catalyst containing M1 and M2 below as metal species and supported on a carrier; and metal catalyst (2): a catalyst containing M1 below as a metal species and supported on a carrier; M1: one or more selected from the group consisting of iron and elements belonging to periods 4 to 6 and groups 5 to 7 of the periodic table; and M2: one or more selected from the group consisting of ruthenium, osmium, and elements belonging to periods 4 to 6 and groups 9 to 11 of the periodic table.