Single-Side Modified Beta-Anderson Heteropolymolybdate Synthesis

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Solution Overview

Problem

The synthesis of single-side modified β-Anderson-type heteropolymolybdate organic derivatives with a non-planar configuration has been challenging due to their instability and low symmetry, and existing methods primarily produce symmetric double-side modified derivatives, with no known method to achieve a single-side modified β-Anderson-type heteropolymolybdate with a trivalent metal as the center heteroatom.

Innovation Solution

A method involving a hydrothermal reaction between an α-Anderson-type heteropolymolybdate and a trimethylolmethane derivative is used to produce a single-side modified β-Anderson-type heteropolymolybdate organic derivative with a non-planar folded structure, where the reaction temperature is set higher than conventional methods to achieve a high yield and purity of the product.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional hydrothermal methods are used to synthesize Anderson-type heteropolymolybdate derivatives, then the synthesis process is simple, but only symmetric double-side modified derivatives with planar configuration can be obtained

Engineering Contradiction:

Improvesynthesis process simplicityVSAvoidproduct structure diversity

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent applies local quality by introducing different organic ligands at specific positions of the Anderson-type heteropolymolybdate framework. The modification occurs locally at one side of the cluster (single-side modification) rather than uniformly across the entire structure, creating asymmetric products with distinct local chemical environments that enable diverse functional properties

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent deliberately creates asymmetric structures by achieving single-side modification of the β-Anderson-type heteropolymolybdate. The non-planar configuration with C1 symmetry results from modifying only one side of the cluster with organic ligands, breaking the symmetry of conventional double-side modified derivatives and enabling new structural configurations

Inventive Principle:

Principle #4Asymmetry

2Adaptability or versatility

If single-side modified β-Anderson-type heteropolymolybdate with non-planar structure is synthesized, then product structure diversity and functionality are improved, but synthesis difficulty and control complexity increase

Engineering Contradiction:

Improveproduct structure diversityVSAvoidsynthesis control complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent employs parameter changes by optimizing hydrothermal synthesis conditions including temperature (100-200°C), time (6-48 hours), pH (2-7), and molar ratios of reactants. These parameter adjustments control the formation of β-Anderson-type structures and enable single-side modification, transforming the synthesis from a simple process to one that produces complex asymmetric structures with high purity

Inventive Principle:

Principle #35Parameter changes

3Adaptability or versatility

If β-Anderson-type heteropolymolybdate with trivalent metal center is used, then new chemical properties and applications are achieved, but stability and reliability decrease

Engineering Contradiction:

Improvechemical property diversityVSAvoidcompound stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent creates composite materials by combining β-Anderson-type heteropolymolybdate frameworks with organic ligands (such as tris derivatives). This composite structure integrates the inorganic cluster core with organic modification groups, enhancing the stability of trivalent metal centers while maintaining diverse chemical properties and enabling applications in catalysis and adsorption

Inventive Principle:

Principle #40Composite materials

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 method successfully synthesizes a single-side modified β-Anderson-type heteropolymolybdate with a non-planar structure, offering a new configuration and high purity, which is significant for both theoretical research and practical applications, such as selective adsorbents or catalysts.

Implementation Method 1

Methodology Applied

Scientific EffectHydrothermal reaction:

Data Source

PatentUS10759819B2Single-side modified β-Anderson-type heteropolymolybdate organic derivatives

Publication Date: 2020.09.01 PETROCHINA CO LTD

AI summary

The present disclosure provides a single-side modified β-Anderson-type heteropolymolybdate organic derivative having an anionic moiety with a general formula represented by: β-{[RC(CH2O)3]M(OH)3Mo6O18}3−; β represents a non-planar folded structure; R=substituted or unsubstituted phenyl, CnH2nX (n is an integer from 0 to 22; X═H, OH, NH(CH2)3SO3H, NHCH2COOH, NH2, or NO2); M=Cr3+. The single-side modified β-Anderson-type heteropolymolybdate organic derivative can be prepared under hydrothermal conditions.