SCM-10 Molecular Sieve Composition for Catalytic Performance
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Solution Overview
Problem
Current molecular sieves with similar XRD patterns but different chemical compositions lack distinct properties for catalytic and adsorbing abilities, limiting their application in catalytic processes.
Innovation Solution
Development of the SCM-10 molecular sieve with a unique empirical chemical composition and X-ray diffraction pattern, produced through a crystallization process involving specific oxide sources, an organic template, and controlled pH conditions, which provides a specific surface area and pore size suitable for catalytic applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If molecular sieves with similar XRD patterns but different chemical compositions are used, then structural identification is simplified, but catalytic and adsorbing properties become indistinct and limited
Solution Approach 1:
The patent applies local quality by introducing specific chemical composition characteristics (Si/Al ratio ranges, presence of rare earth elements) into specific regions of the molecular sieve structure. This creates localized differences in catalytic and adsorbing properties while maintaining the overall SFE structural framework, thereby distinguishing functional properties without changing the fundamental structure.
Solution Approach 2:
The patent utilizes parameter changes by systematically varying chemical composition parameters (Si/Al ratios, rare earth element content, oxide combinations) to create distinct catalytic and adsorbing properties. By adjusting these compositional parameters within the SFE structure, the patent achieves differentiated functional characteristics while maintaining structural consistency for identification purposes.
2Adaptability or versatility
If the chemical composition of molecular sieves is varied to achieve distinct properties, then catalytic and adsorbing abilities are enhanced, but the number of characterizing parameters increases
Solution Approach 1:
The patent applies universality by designing the SFE structure to serve multiple functions simultaneously: it provides a consistent structural framework for identification while accommodating variations in chemical composition that enable different catalytic and adsorbing properties. This multi-functional design allows the same structural type to be characterized by a unified set of XRD parameters while achieving diverse functional performance through compositional tuning.
3Ease of manufacture
If conventional molecular sieves are used with limited compositional variation, then manufacturing is simpler, but catalytic performance and adsorbing abilities are restricted
Solution Approach 1:
The patent applies composite materials by combining the SFE structural framework with varied chemical compositions including different oxide combinations (SiO2-Al2O3, SiO2-B2O3, SiO2-TiO2), different Si/Al ratios, and rare earth element incorporations. This composite approach maintains the manufacturability of a unified structural type while achieving enhanced and varied catalytic performance and adsorbing abilities through compositional diversity.
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 SCM-10 molecular sieve exhibits enhanced catalytic performance and adsorbing abilities, making it effective as a catalyst for converting organic compounds in processes such as alkane isomerization and aromatic disproportionation.
Implementation Method 1
a step of crystallizing a mixture comprising a first oxide source, a second oxide source, an organic template and water to obtain the molecular sieve
Implementation Method 2
crystallizing a mixture comprising a first oxide source, a second oxide source, an organic template and water to obtain the molecular sieve
Implementation Method 3
The structure of a molecular sieve is specifically confirmed by the X-ray diffraction pattern (XRD), while the X-ray diffraction pattern (XRD) is determined by X-ray powder diffraction with a Cu—K α-ray source and a Ni filter
Data Source
AI summary
The present invention relates to an SCM-10 molecular sieve, a process for producing same and use thereof. The molecular sieve has an empirical chemical composition as illustrated by the formula "the first oxidethe second oxide", wherein the ratio by molar of the first oxide to the second oxide is less than 40, the first oxide is at least one selected from the group consisting of silica and germanium dioxide, the second oxide is at least one selected from the group consisting of alumina, boron oxide, iron oxide, gallium oxide, titanium oxide, rare earth oxides, indium oxide and vanadium oxide. The molecular sieve has specific XRD pattern and can be used as an adsorbent or a catalyst for converting an organic compound.