Platinum Nanoparticle Functionalized Hierarchical Zeolite

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Solution Overview

Problem

Conventional zeolites lack enhanced catalytic functionality and accessibility for large reactant molecules due to their non-mesoporous structure, limiting their effectiveness in petrochemical applications.

Innovation Solution

Functionalized fibrous hierarchical zeolites are developed by immobilizing platinum nanoparticles on a framework comprising aluminum, silicon, and oxygen atoms, with both micropores and mesopores, allowing for improved catalytic activity and accessibility through the inclusion of terminal hydroxyl groups and silanol functionalities.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional zeolites with microporous structure are used, then catalytic functionality is provided, but accessibility for large reactant molecules is limited

Engineering Contradiction:

Improvecatalytic functionalityVSAvoidaccessibility for large reactant molecules

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The zeolite structure is segmented into hierarchical levels with both micropores (for catalytic activity) and mesopores (for molecular access). This segmentation allows different pore sizes to serve different functions: micropores provide the catalytic functionality while mesopores enable accessibility for large reactant molecules, resolving the contradiction between catalytic performance and molecular accessibility.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the zeolite structure are assigned different properties: the microporous regions maintain the original zeolite framework for catalysis, while mesoporous channels are introduced to provide enhanced accessibility. This local differentiation of structure and function allows the material to simultaneously achieve both catalytic functionality and improved accessibility for large molecules.

Inventive Principle:

Principle #3Local quality

2Productivity

If platinum nanoparticles are immobilized on the zeolite framework, then catalytic performance is enhanced, but structural complexity increases

Engineering Contradiction:

Improvecatalytic performanceVSAvoidstructural complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The invention creates a composite material system combining zeolite framework, mesoporous structure, and platinum nanoparticles. This composite approach enhances catalytic performance by integrating multiple functional components: the zeolite provides acid catalysis, the mesopores provide accessibility, and the platinum nanoparticles provide additional catalytic pathways. The complexity is justified by the synergistic enhancement of catalytic performance across multiple reaction types.

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

The functionalized zeolites exhibit enhanced catalytic performance and increased accessibility for reactant molecules, leading to improved catalytic reactions and process efficiency in petrochemical applications.

Implementation Method 1

contacting a functionalized fibrous hierarchical zeolite comprising isolated terminal organometallic functionalities comprising platinum with an atmosphere comprising H2

Methodology Applied

Scientific EffectHydrogenation: Hydrogenation

Data Source

PatentUS11987502B2Platinum nanoparticle functionalized fibrous hierarchical zeolite and method of making the same

Publication Date: 2024.05.21 SAUDI ARABIAN OIL CO

AI summary

A functionalized fibrous hierarchical zeolite includes a framework comprising aluminum atoms, silicon atoms, and oxygen atoms, the framework further comprising a plurality of micropores and a plurality of mesopores. A plurality of nanoparticles comprising platinum are immobilized on the framework.