Pore space partition of metal-organic frameworks for gas storage and separation. Issue 4 (July 2022)

• Record Type: Journal Article
• Authors: Hong, Anh N.; Yang, Huajun; Bu, Xianhui; Feng, Pingyun
• Is Part Of: EnergyChem. Volume 4:Issue 4(2022)
• Publication Date: 2022-07
• Subjects: Metal-organic frameworks -- Isoreticular design -- Pore space partition -- Gas storage -- Gas separation; Electrochemistry -- Periodicals; Materials science -- Periodicals; Chemical engineering -- Periodicals; 660.282
• DOI: 10.1016/j.enchem.2022.100080
• Languages: English
• ISSNs: 2589-7780

Abstract

Highlights: Overview of crystal engineering and pore space partition strategies to control pore metrics and functionalities of metal-organic frameworks from inorganic and organic perspectives. Overview of the development of the pacs platform as perhaps the most compositionally diverse in either inorganic or organic aspects and the most isoreticular-substitution-tolerant MOF platform enabling tunable framework-charge-induced host-guest chemistry, high chemical stability, and high gas sorption performance. Review of select small-molecule gas storage and separation from synthetic and structural design perspectives. Abstract: Pore space partition (PSP) concept is a synthetic design concept and can also serve as a structure analysis method useful for next-step synthetic planning and execution. PSP provides an integrated chemistry-topology-focused tool to design new materials platforms. While PSP is no less effective for making large-pore materials, the growing importance of small-molecule gas storage and separation for green-energy applications provides impetus for developing small-pore materials for which the PSP strategy is uniquely suited. Currently, the best embodiment of the PSP concept is the partitioned-acs ( pacs ) platform in which both fine or coarse adjustments to the building blocks have sparked a transformation of a prototype framework into a huge and continuously expanding family of chemically robust materials with controllable pore metrics and functionalities suitable for tailored applications. The pacs compositional diversity results from the platform's intrinsic multi-module nature, geometric flexibility and tolerance towards individual module variations, and mutual structure-directing effects among various modules, all of which combine to enable the molecular-level uniform co-assemblies of chemical components rarely seen together elsewhere. In this contribution, we present an overview of different pore space engineering methods and how different MOF materials have contributed to important advances in chemical stability, industrial gas storage and gas separation. In particular, we will focus on synthetic assembly of the pacs system, highlighting the differences of pacs materials from other MOF platforms and advantages of pacs materials in enhancing various MOF properties. Graphical abstract: Image, graphical abstract