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Analysis of development trend in field of ionic liquids based on global patent information

  • Zheng ZHENG Hongyan HE
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  • 1. Library of University of Science & Technology Beijing, Beijing 100083, China 2. Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China

Received date: 2021-01-06

  Revised date: 2021-03-07

  Online published: 2021-04-28

Abstract

Nowadays, countries all over the world pay more and more attention to environmental protection and green development. Ionic liquids have broad application prospects in many fields such as energy, materials and environment, due to its excellent physical and chemical properties and electrochemical properties. Based on global patent information, a comparative analysis was made on the global patent application trends, application regions, important patentees and key technologies of three popular applications in the field of ionic liquids, including CO2 capture and utilization, electrochemical energy storage, biomass conversion and utilization. It is found that ionic liquid technology has a wide classification layout and especially the related patents of catalytic separation are abundant. There are a large number of patent applications in the field of ionic liquids in China, but the patentees are mainly universities or scientific research institutions, and the patent transformation, application and protection are insufficient. Therefore, it is suggested that China strengthen the cooperation between research institutions and new energy/environmental protection technology companies in the field of ionic liquids, and carry out in-depth applications in power batteries, carbon capture, bio-based materials, wastewater treatment, air purification and other fields.

Cite this article

Zheng ZHENG Hongyan HE . Analysis of development trend in field of ionic liquids based on global patent information[J]. The Chinese Journal of Process Engineering, 2021 , 21(4) : 383 -393 . DOI: 10.12034/j.issn.1009-606X.221009

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