Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Ordered and Hierarchically Porous Zeolite Crystal and A Method for Preparation
Technology Category/Market
Category – Chemistry and Chemical Analysis
Applications – Manufacturing/Chemical, Catalysts, Mesoporas Zedite, Hierarchical nanoporous zeolites, Solid acid catalysts
Industry – Refining, Separation and fine chemical synthesis
Market – The global zeolite market size was USD 8.5 B in 2022. It is projected to surpass around USD 12.7 B by 2032, and it is poised to reach a CAGR of 4.2% from 2023 to 2032.
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Problem Statement
- Improved zeolite catalysts have a huge demand for selective butylation of phenol with high conversion rates.
- A process to prepare hierarchical mesoporous zeolites with varying micro-and meso-porosities using organosilane templates. But, a controlled crystallization with an ordered mesoporous structure is not achieved. Also, the templating agent used is expensive.
- There remains a need to develop a zeolite with ordered mesoporous structure with enhanced phenol conversion.
- Further, there exists a need for synthesizing cost effective catalyst which displays enhanced selectivity towards conversion of phenol.
Technology
- The present invention relates to ordered and hierarchically porous zeolite crystal catalyst showing enhanced selectivity towards phenol conversion and a method for preparation of the catalyst are disclosed.
- A solution containing alumina, silica and an organosilane are mixed and treated at a particular temperature for a particular period of time under pre-determined conditions to obtain a highly crystalline zeolite.
- A MFI- type, FAU- type and LTA- type zeolites are obtained (Fig.1.A,B,C;2A,2B,3A,3B). The zeolite catalyst exhibits a hierarchically porous structure with ordered mesopores.
- The surface area of the zeolite is in the range of micropores is in the range of 2- 374 m2 g-1 and the size of the mesopores is in the range of 89 – 499 m2 g-1.
- The lifetime of the crystal is at least 20 h.
Key Features/Value Proposition
- The concept of stable supramolecular aggregation and slow-rate of crystallization supported by low-temperature synthetic conditions, resulting in the formation of hierarchical organization.
- The invention also presents the remarkable activities of synthesized zeolites for tertiary butylation of phenol with enhanced selectivity towards 4-t-butylphenol and 2,4-di-t-butylphenol under optimized reaction conditions.
- The LTA- type zeolite has wide range of applications in industries for example for use in adsorption, separation and ion-exchange processes.
Questions about this Technology?
Contact for Licensing
smipm-icsr@icsrpis.iitm.ac.in
ipoffice2@iitm.ac.in
Research Lab
Prof. Selvam .P
Department of Chemistry
Intellectual Property
- IITM IDF Ref. 1587
- IN 341205 – Patent Granted
- PCT/IN2019/050202 – Published
Technology Readiness Level
TRL – 4
Technology validated in lab.