High gas-uptake capacity is desirable for many reasons such as gas storage and sequestration. Moreover, ultrahigh capacity can enable a practical separation process by mitigating the selectivity factor that sometimes compromises separation efficiency. Herein, a single-walled nickel–organic framework with an exceptionally high gas capture capability is reported. For example, C₂H₄ and C₂H₆ uptake capacities are at record-setting levels of 224 and 289 cm³ g⁻¹ at 273 K and 1 bar (169 and 110 cm³ g⁻¹ at 298 K and 1 bar), respectively. Such ultrahigh capacities for both gases give rise to an excellent separation performance, as shown for C₂H₆/C₂H₄ with breakthrough times of 100, 60 and 30 min at 273, 283 and 298 K and under 1 atm. This new material is also shown to readily remove ethylene released from fruits, and once again, its ultrahigh capacity plays a key role in the extraordinary length of time achieved in the preservation of the fruit freshness.

中文翻译：

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通过新型单壁镍有机框架实现超高吸收能力的气体分离和水果保鲜

出于多种原因，例如气体储存和封存，需要高气体吸收能力。此外，超高容量可以通过减轻有时会损害分离效率的选择性因素来实现实际的分离过程。本文报道了一种具有极高气体捕获能力的单壁镍有机框架。例如，C ₂ H ₄和 C ₂ H ₆吸收能力在 273 K 和 1 bar 下分别达到创纪录水平 224 和 289 cm ³ g ^-1（在 298 K 和 1 bar 下分别为 169 和 110 cm 3 ^g -1 ^））， 分别。对于两种气体的这种超高容量带来了优异的分离性能，如 C ₂ H ₆ /C ₂ H ₄所示，在 273、283 和 298 K 和 1 atm 以下的突破时间分别为 100、60 和 30 分钟。这种新材料还被证明可以轻松去除水果中释放的乙烯，并且其超高容量再次在实现水果新鲜度的超长保存时间方面发挥着关键作用。