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Analysis of development trends and research hotspots in mixed matrix membranes based on patent data
Authors: LI Xuze1, JIANG Hongbing1,WANG Jing2, ZHANG Yatao2, LI Dongyang2
Units: 1. School of Management, Zhengzhou University, Zhengzhou 450001, China; 2. School of Chemical Engineering, Zhengzhou University, Zhengzhou 450001, China
KeyWords: mixed matrix membranes; patentometrics; main path analysis; technological development trends; hotspot recognition
ClassificationCode:TQ028.8; G01N33
year,volume(issue):pagination: 2026,46(1):230-239

Abstract:
Mixed matrix membranes (MMMs), integrating the advantages of polymeric continuous phases with molecular sieve dispersed phases, have attracted significant research interest owing to their facile fabrication and enhanced operational stability. Leveraging the Incopat global patent database, this study employs patentometrics combined with main path analysis to systematically investigate the evolutionary trajectory and innovation focal points within global MMM technology. A pronounced surge in MMM-related patent applications globally since 2019, with China emerging as the dominant technological force (accounting for over 85% of filings), where academic institutions such as Dalian University of Technology serve as primary innovation drivers.  The current innovations in membrane technology focus on modification strategies for membrane materials and functional integration design; as a core component, mixed matrix membranes are increasingly prominent in the industrial applications of high-end manufacturing support areas such as gas separation and water treatment. Technical pathway analysis reveals that synergistic optimization of functional fillers (e.g., ZIF-8, MOFs) and polymer matrices (e.g., Pebax) constitutes the critical breakthrough strategy for overcoming the permeability-selectivity trade-off. Gas separation persists as the predominant application domain. To accelerate MMM industrialization and advance carbon neutrality objectives, we propose strengthening industry-university-research collaboration and establishing enterprise-centered innovation ecosystems. 
 

Funds:
国家自然青年科学基金项目(C类)(22208317); 河南省科技攻关项目(252102321072)

AuthorIntro:
李旭泽(2002-),男,河南周口人,硕士研究生,主要研究方向为专利数据挖掘

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