Issue 9, 2013

A series of metal–organic frameworks with high methane uptake and an empirical equation for predicting methane storage capacity

Abstract

A series of metal–organic frameworks (NOTT-100a (MOF-505a), NOTT-101a, NOTT-102a, NOTT-103a and NOTT-109a) with variable open copper sites and micropore spaces have been examined as potential adsorbents for methane storage. They exhibit high adsorption capacities for methane at 300 K and 35 bar (181–196 cm3 (STP) cm−3). Supposing that the deliverable amount of methane is defined as the difference in the amount of methane adsorbed between 5 bar and 35 bar, NOTT-101a, NOTT-102a and NOTT-103a exhibit excellent deliverable capacities of methane (136–140 cm3 (STP) cm−3), comparable to the highest of all previously reported MOF materials. The gravimetric methane uptake in this MOF series systematically increases with increasing porosity, while their methane storage pore occupancy decreases with increasing pore size. The fact that gravimetric methane uptakes correlate well with their corresponding pore volumes enables us to derive an empirical equation: C = −126.69 × Vp2 + 381.62 × Vp − 12.57, where C is the excess gravimetric methane storage capacity at 35 bar and 300 K in cm3 (STP) g−1, and Vp is the pore volume of a MOF material in cm3 g−1. This empirical equation can predict the methane storage performance of previously reported microporous MOF materials of Vp less than 1.50 cm3 g−1 reasonably well, and thus provides a convenient method to screen MOFs for methane storage purposes.

Graphical abstract: A series of metal–organic frameworks with high methane uptake and an empirical equation for predicting methane storage capacity

Supplementary files

Article information

Article type
Paper
Submitted
05 Apr 2013
Accepted
11 Jul 2013
First published
12 Jul 2013

Energy Environ. Sci., 2013,6, 2735-2744

A series of metal–organic frameworks with high methane uptake and an empirical equation for predicting methane storage capacity

Y. He, W. Zhou, T. Yildirim and B. Chen, Energy Environ. Sci., 2013, 6, 2735 DOI: 10.1039/C3EE41166D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements