Speeding Up Chemisorption Analysis by Direct IR-Heat-Release Measurements (Infrasorp Technology): A Screening Alternative to Breakthrough Measurements

Abstract

In this study, a new innovative adsorption screening method, Infrasorp technology, is presented as a quick and efficient measurement tool for the determination of H 2 S adsorption capacity and compared to breakthrough measurements. Using zinc oxide nanoparticles and metal−organic framework materials, a clear correlation between those two techniques was found, showing the broad applicability of the method for different classes of materials and the potential of Infrasorp to be used as an alternative or preliminary analysis to breakthrough measurements. This tool saves time and costs and speeds up characterization of new materials thanks to the feasibility of a quick and easy wide screening using a small amount of adsorbent.

Controlled Gas Uptake in Metal–Organic Frameworks with Record Ammonia Sorption

“…Instead, cooperative proximity effects likely lead to the anomalous observed increase in ammonia saturation uptake for M 2 Cl 2 BBTA. Using InfraSORP, − a recently developed calorimetric technique, we further draw correlations between pore size and sorption kinetics. Finally, we show that MOF stability to ammonia or water, an oft-empirical parameter of fundamental and practical importance, correlates directly with the water exchange rates in homoleptic metal–aquo complexes, a fundamental property established decades ago that will serve as an easy guide for new MOF design in the future.…”

Cooperative Assembly of 2D‐MOF Nanoplatelets into Hierarchical Carpets and Tubular Superstructures for Advanced Air Filtration

“…For DUT-134(Cu) based carpets, however, a remarkably high value of 14.6 mmol g À 1 could be achieved, almost six times higher than that of the bulk DUT-134 (Figure 8). The results were also validated by InfraSORP [30] measurements (for more details see Supporting Information). This value is approaching the capacity of MIL-53(Al)-TDC, a benchmark with the highest H 2 S adsorption (18.1 mmol g À 1 ) [31] ever reported for any adsorbent, but measured at a higher concentration of 5 vol % H 2 S in N 2 at 303 K. CPO-27(Ni) (12 mmol g À 1 at 1 bar H 2 S at 303 K) [32] is clearly out-…”

An Innovative Technique for Rapid Screening of Cigarette Filter Adsorbents

“…Thus, the InfraSORP is substantially faster than common characterization techniques, e.g., analysis of smoke components by HPLC or GC/MS using a smoking machine, which can take up to several hours. The single‐port instrument is more versatile and can be used for a wide range of gases, thus also giving an insight into selective adsorption and chemisorption performance 14.…”

“…It was recently shown that the specific integral of the thermal response curve can be correlated to the specific surface area and the amount of adsorbed test gas over a wide range of microporous materials because under measurement conditions (298 K, p butane = 1 bar) p / p 0 is close to 0.4 and thus in the plateau of a type I isotherm. Under these high coverage conditions, the heat of adsorption is almost constant and independent of the adsorbent 11–15. Limitations may be encountered for very small pore materials, where pore wall interactions are dominant even at p / p 0 = 0.4.…”